900mb Section A

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Datasheet Modbus I/O Discrete I/O Modules Analog I/O Modules BusWorks® 900MB Series Modbus-RTU I/O 904MB active high inputs . . . . . . . . . . . . . . . . . . .56 905MB sourcing outputs . . . . . . . . . . . . . . . . . . .56 906MB active high inputs, sourcing outputs . . . .56 Introduction 913MB DC current input . . . . . . . . . . . . . . .Page 58 914MB DC voltage input . . . . . . . . . . . . . . . . . . .58 917MB DC current output . . . . . . . . . . . . . . . . . .60 918MB DC voltage output . . . . . . . . . . . . . . . . . .60 924MB Thermocouple/millivolt input . . . . . . . . . .62 932/934MB RTD input . . . . . . . . . . . . . . . . . . . . .64 942MB Frequency/counter input . . . . . . . . . . . . .66 Analog I/O Modules Series overview . . . . . . . . . . . . . . . . . . . . . .Page 50 Discrete I/O Modules 901MB active low inputs . . . . . . . . . . . . . . .Page 54 902MB sinking outputs . . . . . . . . . . . . . . . . . . . .54 903MB active low inputs, sinking outputs . . . . . .54 901/2/3 DISCRETE INPUTS Active low input Active high input ANALOG INPUTS DC voltage/current input DC millivolt input Thermocouple input RTD/resistance input Frequency input AC current input (requires external sensor) DISCRETE OUTPUTS Sinking output (low-side switch) Sourcing output (high-side switch) Limit alarm (open-drain MOSFETs or relays) ANALOG OUTPUTS DC voltage/current POWER CONFIGURATION DC-powered AC-powered Amplicon.co.uk Amplicon.com 904/5/6 913/914 917/918 924 932/934 Accessories Software interface package . . . . . . . . . . . . .Page 69 Power supplies . . . . . . . . . . . . . . . . . . . . . . . . . .69 Mounting hardware . . . . . . . . . . . . . . . . . . . . . . .69 RS-232/485 signal converter . . . . . . . . . . . . . . . . .70 RS-485 network repeater . . . . . . . . . . . . . . . . . . .70 942 x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x IT and Instrumentation for industry Sales: +44 (0) 1273 570 220 Website: www.amplicon.com Email: [email protected] Datasheet 900MB Modbus I/O Network ■ Special Features ■ ■ ■ ■ ■ ■ 900MB Series Modbus-RTU I/O Modules The 900MB series is a high-performance line of multi-function I/O modules. These units feature universal input/output ranges and an intelligent microcontroller to provide extreme flexibility and powerful monitoring and control capabilities. Select from a variety of analog and discrete I/O models to meet your application requirements. To ensure unsurpassed performance, these I/O modules employ the latest digital technology. State-of-the-art flash microcontrollers plus optically isolated input, output, power, and network circuits increase noise/transient immunity and prevent ground loops. Status LEDs provide diagnostic feedback and visually indicate which channels are outside their calibrated range. Sophisticated watchdog timer functions allow the application to define the module's failsafe output state. The watchdog timer invokes the failsafe condition when communication between the host and module exceed a duration specified by the application. For further security, a second hardware watchdog timer monitors the microcontroller for failed operations or a “lock-up” condition and automatically resets the unit. Amplicon.co.uk Amplicon.com Series ■ High-speed RS-485 communication allows data transfers up to 115K baud Modbus RTU protocol interfaces to popular HMI and SCADA software packages Wide-range, polarity-insensitive power supply supports 10-36V DC and 24V AC sources Powerful watchdog timers allow user-defined failsafe state when host communication is lost Isolation eliminates potential ground loops between I/O, power, and network circuitry Default switch allows user to set module to known communication parameters Menu-based Windows® configuration software simplifies setup and trouble-shooting ■ Discrete I/O These modules monitor discrete levels of various devices and/or provide on/off control capabilities depending on the model selected. Each module offers high channel density to save space and keep costs low. Models are available with twelve inputs, twelve outputs, or twelve bidirectional I/O channels. Inputs ■ Active-high inputs, 0 to 35V DC ■ Active-low inputs, 0 to 35V DC Outputs ■ Sourcing outputs, 5.5 to 35V DC, 250mA ■ Sinking outputs, 0 to 35V DC, up to 1A Functions ■ Monitor discrete state or level ■ On/off control ■ Activate audible or visual alarms ■ Transmit discrete data to other control systems ■ Analog Input These units monitor DC or thermocouple sensor inputs and provide alarm outputs if conditions exceed user-defined limits. Each module has four analog input channels and four discrete outputs for independent local alarms or host-controlled on/off switching. Inputs ■ DC current ■ DC voltage ■ DC millivolts ■ Thermocouple ■ RTD/resistance ■ Frequency ■ AC current Outputs ■ Open drain MOSFETs (1A solid-state switches) Functions ■ Temperature monitoring ■ Process variable measurement ■ Limit alarms with high and/or low setpoints ■ On/off control ■ Analog Output Analog output modules are ideal for controlling a wide variety of industrial machinery. The host defines the output of voltage or current signals to control speed, flow, temperature, frequency, level, force, torque, intensity, and many other properties. Each module has four analog output channels plus four discrete outputs for on/off switching applications. Outputs ■ DC voltage ■ DC current ■ Open drain MOSFETs (1A solid-state switches) Functions ■ Write data to local displays or recorders ■ Control drives, valves, and other equipment ■ Transmit discrete data to other control systems ■ On/off control (alarms) IT and Instrumentation for industry Sales: +44 (0) 1273 570 220 Website: www.amplicon.com Email: [email protected] Datasheet Modbus Simplified Enterprise Diagram ECU EX PL EN TIV T NE T AN ETW KOR Bu ess sin O n tio a r pe s Server Server RK WO o -M Remote Workstation ori nit ng and l tro n Co OI Terminal DCS Modems HMI Software Citect Iconics Intellution LabView Wonderware PLC Workstation N I/O RK O ETW RT usb d Mo o Ut s sor n e S DIS CR ETE Acromag 900MB Series I/O Modules 901MB 902MB 903MB 904MB 905MB 906MB 12 DI (active low) 12 DO (sinking) 12 DI/DO (as above) 12 DI (active high) 12 DO (sourcing) 12DI/DO (as above) Amplicon.co.uk Amplicon.com I/O 913MB 914MB 917MB 918MB 924MB 934MB 942MB 4 AI (mADC), 4 DO 4AI (VDC), 4 DO 4 AO (mADC), 4 DO 4 AO (VDC), 4 DO 4 TC/mV, 4 DO 4 RTD, 4 DO 2 Freq, 2 DO and o uat t c A AN AL (W OG IN /AL P AR UT MS ) 32 ft, 0 0 0 5, 4 8 4 Ss (R s) bp K 5 11 es, c i dev r AN AL O (W G OU /AL TP AR UT MS ) TEM PER I ATU (W NPUT RE /AL AR MS ) FRE QU (W ENCY /AL IN AR PUT MS ) Frequency/Counter TTL, dry contact, high/low-side transistor switches, magnetic pickups, proximity sensors I/O 901 902 903 904 905 906 Thermocouple/Millivolt/RTD sensors: temperature, O2, cathodic monitor, DC shunt Voltage/Current Signal Generation variable frequency drives, valves, motors, positioners, displays, recorders Voltage/Current Signal Measurement sensors: flow, level, speed, pressure, etc. On/Off Monitoring & Control, High/Low Status & Switching motors, pumps, heaters, solid-state relays, other discrete devices IT and Instrumentation for industry Sales: +44 (0) 1273 570 220 Website: www.amplicon.com Email: [email protected] Datasheet 900MB Series ■ Software Support Series 900 I/O modules are compatible with popular Human-Machine Interface (HMI) software packages that support Modbus communication. The I/O modules may be configured using generic drivers provided with the HMI software to access the Modbus register maps. A list of popular third-party HMI software manufacturers: ■ AB/Rockwell ■ National Instruments ■ Citect ■ Steeplechase ■ Iconics ■ Think and Do ■ Intellution ■ Wonderware Acromag also offers a configuration utility for faster and easier setup. This software provides an intuitive approach to select configuration options for your application. Familiar Windows pull-down selection menus and fill-in-the-blank fields speed you through a few brief configuration screens. No programming is required. The utility also helps you monitor and verify proper operation of the module outside the main control software. This diagnostic tool provides a simple alternative to using Modbus register maps. Acromag’s configuration software can be used offline to set up a module and save the configuration to a file. Module Configuration Acromag Configuration Software for Windows® 900MB Module (all models) RS-232/485 Converter and RS-485/3-wire Cable ■ Easy Configuration Acromag’s configuration software is designed for offline setup at a bench or in the field with a laptop computer. Configuration settings can be saved to a file or printed for archival purposes. Setup is quick and easy using the steps below. 1) Connect the module to a PC with the cable and RS-232/485 converter (typical system). Apply power. 2) In the software, open a saved configuration or select the Module Upload option. 3) Configure the operating parameters as desired and download the configuration into the module. 4) Use the software’s Test function to verify module operation and communication. 5) Install the module on the network. Limit alarms are easy to configure with fill-in-the-blank fields in engineering units for high/low alarm setpoints. Amplicon.co.uk Amplicon.com IT and Instrumentation for industry Sales: +44 (0) 1273 570 220 Website: www.amplicon.com Email: [email protected] Datasheet Modbus ■ Accessories Configuration Tools Acromag provides a full set of tools to help you get your modules set up and ready to install. ■ Software Interface Package See Page 69 for more information. Includes the following: - Configuration Software Utility - Instruction manuals - Serial port converter - Interface cable Network Devices Everything you need to drive your network is available from Acromag: isolators, converters, signal boosters, and power sources. ■ Universal 50W Power Supply (Page 69) Isolated RS-232/485 Converter (Page 70) Isolated RS-485 Network Repeater (Page 70) ■ General Module Specifications Communication Interface Network Communication ■ Modbus-RTU protocol, RS485 (3-Wire). Standard Protocol implementation as defined under “Modicon Modbus Reference Guide” PI-MBUS-300 Rev. J. Reference: http://public.modicon.com. Search on: PI-MBUS-300 for technical publication. Baud Rate Watchdog Timer (Network Communication) All modules have a communication watchdog timer function. The watchdog timer is configurable for timeout periods of up to 18 hours. This timer function monitors I/O communications with the host controller. In the event of lost communications, output ports optionally reset to a user-defined state or level. The watchdog timer restarts with a read/write to an I/O channel. Environmental Ambient Temperature ■ 2400, 4800, 9600, 14.4k, 19.2k, 28.8k, 38.4k, 57.6k, 76.8k, or 115.2k baud. Default 9600 baud. Operation: -25°C to +70°C (-13°F to +158°F). Storage: -40°C to +85°C (-40°F to +185°F). Module Addressing Relative Humidity 0 to 247, selectable. Default address 247. 5 to 95% non-condensing. Network Distance Radiated Field Interference Immunity (RFI) 4000 feet without network repeater. Nodes Supports up to 32 modules without the use of a network repeater. Parity Odd, even, or none. Default setting none. Mounting Hardware Installation is a snap with Acromag accessories. Stop Bits DIN RAIL Bars (Page 69) 19" Rack-Mount Kit (Page 69) Watchdog Timer (Hardware) ■ I/O One with parity, one or two with no parity. A hardware watchdog timer is built into each module to perform a reset if the microcontroller fails to return from an operation in a timely manner or "locks up". Complies with EN61000-4-3 Level 2 and EN50082-1 (3V/M, 80 to 1000MHz AM and 900MHz keyed). Electrical Fast Transient Immunity (EFT) EN61000-4-4 Level 1 and EN50082-1 (0.5KV power, signal lines). Electrostatic Discharge (ESD) Immunity EN61000-4-2 Level 3 and EN50082-1 (8KV/4KV air/direct discharge). Surge Immunity EN61000-4-5 (0.5KV) and EN50082-1. Radiated Emissions Meets EN50081-1 for Class B equipment. Approvals CE marked. UL listed for US and Canada. Class I; Division 2; Groups A, B, C, D. Enclosure/Physical Enclosure ■ Self-extinguishing NYLON type 6.6 polyamide thermoplastic UL94 V-2, color beige; general purpose NEMA Type 1 enclosure. Connectors (Removable Terminal Blocks) Wire Range: AWG #12-24, stranded or solid copper. Dimensions 1.05W x 4.68H x 4.35D inches 26.7W x 118.9H x 110.5D mm. DIN Rail Mounting DIN rail mount, Type EN50022; "T" rail (35mm). Shipping Weight 1 pound (0.45 Kg) packed. Amplicon.co.uk Amplicon.com IT and Instrumentation for industry Sales: +44 (0) 1273 570 220 Website: www.amplicon.com Email: [email protected] Datasheet 900MB Modbus/RS-485 Series High-Density Discrete I/O Module Inputs (4) or Outputs (4) Twelve Discrete Inputs or Outputs Inputs (4) or Outputs (4) Isolation Inputs (4) RS-485 Modbus or Outputs (4) 901/902/903MB Multi-Channel Discrete I/O Modules Active-Low Inputs Sinking Outputs (Low-Side Switching) Models 901MB: 12 input channels 902MB: 12 output channels 903MB: 12 input/output channels Input Twelve input channels (901, 903 models only) 0 to 35V DC Output Twelve output channels (902, 903 models only) O to 35V DC Network Communication Modbus-RTU high-speed RS-485 Power Requirement 10 to 36V DC, 24V AC Approvals CE marked. UL, cUL listed Class I; Division 2; Groups A, B, C, D. Amplicon.co.uk Amplicon.com ■ Description These modules provide twelve discrete input and/or output channels. Isolation separates the I/O, power, and network circuits. Network communication adheres to the industry-standard RS-485 Modbus RTU protocol. Both AC and DC power sources are supported with wide range, nonpolarized, diode-coupled terminals. The open-drain outputs are intended for currentsinking or low-side switching applications. The buffered inputs are active-low. These models are the complement of the 904, 905, and 906 units which have open-source, high-side output switches and active-high inputs. Socketed pull-up resistors are easily removed or exchanged to satisfy your application requirements. The 903MB model has twelve input/output points that may be used as inputs or outputs on a bit-by-bit basis. Outputs may be read back to verify output settings. Combining flexible I/O types, wide I/O ranges, and a network interface in a single package, makes this instrument extremely powerful. Multi-channel design adds cost-efficiency and allows high-density mounting. Plus, safe, rugged construction makes these modules reliable for use in both control room and distributed field I/O applications. Custom module configurations are also possible (consult factory for details). 10-36V DC or 24V AC Power ■ Special Features ■ ■ ■ ■ ■ ■ ■ ■ ■ Standard Modbus RTU protocol with high-speed RS-485 communication (up to 115K bps) Twelve I/O channels in a single inch-wide unit reduces system costs and saves panel space High-voltage, high-current, open-drain outputs enable direct (low-side) control of external devices High-voltage buffered inputs monitor discrete levels from a variety of industrial devices Tandem input/output circuitry (903 models only) connects input buffers with open-drain outputs for convenient loopback monitoring of the output state Outputs have built-in over-temperature and over-current shut-down protection, plus active clamping circuits for switching inductive loads Watchdog timers provide a configurable failsafe output state for use when host I/O communication is lost Three-way isolation eliminates potential ground loops between power, I/O, and network circuitry Self-diagnostics monitor microcontroller activity to detect operational failures (lock-up) and execute a reset to restore communication IT and Instrumentation for industry Sales: +44 (0) 1273 570 220 Website: www.amplicon.com Email: [email protected] Datasheet Modbus I/O ■ Performance ■ ■ Discrete Inputs (901 & 903 models only) Input Type 5.6K ohm pull-up resistor SIPs are installed in sockets at each port (four-channels per port). General I/O Pull-ups and Socket 12 active-low, buffered inputs, with a common connection. Inputs include transient suppression devices and series connected 100K ohm resistors, plus diode over-voltage clamps to the internal +5V supply. Excitation (per port) External excitation voltage for each four-channel port is limited to 35V or less. Supported Modbus Commands The command/response protocol for communicating with this module adheres to the Modbus/RTU standard for the following Modbus Functions. Read Coil (Output) Status Read Input Status Read Holding Registers Force Single Coil (Output) Preset Single Register Reset Slave Force Multiple Coils (Outputs) Preset Multiple Registers Report Slave ID Input Signal Voltage Range 0 to 35V DC, maximum. Input Current 293µA, typical at 35V DC. Input Signal Threshold TTL compatible with 100mV of hysteresis, typical. Low-to-High threshold is 1.7VDC, High-to-Low is 1.6VDC, typical. Limited to TTL levels of 0.8VDC (max. LOW level) and 2.0VDC (min. HIGH level). Input Resistance 100K ohms, typical. LED Indicators Input Hysteresis LEDs indicate power, status, and discrete level. 100mV DC, typical. Power Requirements Discrete Outputs (902 & 903 models only) Output Type 10 to 36V DC, 22 to 26V AC. 12 independent, open-drain, DMOS MOSFET switches with a common source connection that operate as low-side switches. Supply 10V DC 24V DC 24V AC ■ Supply Current Output Voltage Range 0 to 35V DC max. (0 to 500mA/channel continuous). External voltage source required. Output ON Resistance 0.28 ohms maximum. ■ Ordering Information Models 901MB-0900 Discrete input module 902MB-0900 Discrete output module 903MB-0900 Discrete input/output module Accessories 900C-SIP Configuration Software Interface Package (includes software CD-ROM for Windows, RS-232/485 converter, and RS-485/three-wire cable) 5034-225 USB-to-RS232 adapter. See page 68 for more info. TBK-B02 Optional terminal block kit, barrier strip style, 4 pcs. TBK-S02 Optional terminal block kit, spring clamp style, 4 pcs. PS5R-D24 Power supply (24V DC, 2.1A). See Power Supplies on Page 199. For more information on software, network hardware, and mounting accessories, please see Pages 69-71. Current Draw 80mA maximum 40mA maximum 70mA rms maximum Isolation 1500V AC for 60 seconds or 250V AC continuous. 3-way isolation between I/O, network, and power circuits. Output Response Time Optional terminal blocks: barrier strip (left) and spring clamp (right). Cage clamp terminal is standard. Force Single Coil: Output updates within 250µs of receipt of a command. Force Multiple Coils: First coil updates in 250µs, followed successively by additional coils every 180µs. DIGITAL INPUT CONNECTIONS (ACTIVE LOW) DIGITAL OUTPUT CONNECTIONS CH 3 RTN CH 0 CH 1 CH 2 INTERNAL INPUT PULL-UPS ARE PRESENT CH 6 CH 7 RTN EXC3 COM D D B A 100K TB3 V I/O 5-35V 902MB/903MB ON OFF NETWORK COMMUNICATION RTN AC/DC POWER 10 TO 36V DC OR 24V AC NON-POLARIZED CH 3 TB1 EXC1 OUT CH 0 DIGITAL I/O SHARES RETURN RTN CH 1 CH 2 CH 3 RTN RTN Amplicon.co.uk Amplicon.com TO OTHER 3 CHAN OF PORT DIGITAL I/O TB3 EXC1 CH 5 CH 8 COM PWR TB2 TB1 CH 4 CH 9 TB4 RS485 DIGITAL I/O RTN DIGITAL IN or OUT 21 22 23 24 25 26 DUP SPST RELAY CH10 903MB shown. 901MB & 902MB are similar. TB2 EXC2 RTN CH11 36 35 34 33 32 31 + 12-24V DC, TYPICAL RTN CH 2 TB1 RTN CH 1 TB4 EXC DIGITAL I/O CH 0 46 45 44 43 42 41 INP 11 12 13 14 15 16 RTN EXC1 DIGITAL IN or OUT TB1 DIGITAL IN or OUT EXC INP DIGITAL I/O SHARES RETURN LOAD +5V +5V INP EXC 903MB 5V TTL LOGIC - INPUT CAN BE PULLED UP INTERNALLY OR EXTERNALLY IT and Instrumentation for industry Sales: +44 (0) 1273 570 220 Website: www.amplicon.com Email: [email protected] Datasheet 900MB Modbus/RS-485 Series High-Density Discrete I/O Module Inputs (4) or Outputs (4) Twelve Discrete Inputs or Outputs Inputs (4) or Outputs (4) Isolation Inputs (4) RS-485 Modbus or Outputs (4) 904/905/906MB Multi-Channel Discrete I/O Modules Active-High Inputs Sourcing Outputs (High-Side Switching) Models 904MB: 12 input channels 905MB: 12 output channels 906MB: 12 input/output channels Input Twelve input channels (904, 906 models only) 0 to 35V DC Output Twelve output channels (905, 906 models only) 5.5 to 35V DC Network Communication Modbus-RTU high-speed RS-485 Power Requirement 10 to 36V DC, 24V AC Approvals CE marked. UL, cUL listed Class I; Division 2; Groups A, B, C, D. Amplicon.co.uk Amplicon.com ■ Description These modules provide twelve discrete input and/or output channels. Isolation separates the I/O, power, and network circuits. Network communication adheres to the industry-standard RS-485 Modbus RTU protocol. Both AC and DC power sources are supported with wide range, nonpolarized, diode-coupled terminals. The outputs are intended for current-sourcing or high-side switching applications. The buffered inputs are active-high. These models are the complement of the 901, 902, and 903 units which have low-side output switches and active-low inputs. Socketed pull-down resistors are easily removed or exchanged to satisfy your application requirements. The 906MB model has twelve input/output points that may be used as inputs or outputs on a bit-by-bit basis. Outputs may be read back to verify output settings. Combining flexible I/O types, wide I/O ranges, and a network interface in a single package, makes this instrument extremely powerful. Multi-channel design adds cost-efficiency and allows high-density mounting. Plus, safe, rugged construction makes these modules reliable for use in both control room and distributed field I/O applications. Custom module configurations are also possible (consult factory for details). 10-36V DC or 24V AC Power ■ Special Features ■ ■ ■ ■ ■ ■ ■ ■ Standard Modbus RTU protocol with high-speed RS-485 communication (up to 115K bps) Twelve I/O channels in a single inch-wide unit reduces system costs and saves panel space High-voltage, high-current, open-source outputs enable direct (high-side) control of external devices High-voltage buffered inputs monitor discrete levels from a variety of industrial devices Tandem input/output circuitry (906 models only) connects input buffers with open-source outputs for convenient loopback monitoring of the output state Watchdog timers provide a configurable failsafe output state for use when host I/O communication is lost Three-way isolation eliminates potential ground loops between power, I/O, and network circuitry Self-diagnostics monitor microcontroller activity to detect operational failures (lock-up) and execute a reset to restore communication IT and Instrumentation for industry Sales: +44 (0) 1273 570 220 Website: www.amplicon.com Email: [email protected] Datasheet Modbus ■ Performance Output Response Time ■ Discrete Inputs (904 & 906 models only) Input Type ■ I/O Outputs update within 50ms of a write command and switch within 5mS of receipt of command. Loopback response (906MB) is 1µS low-to high, 5µS high-to-low. 12 active-high, buffered inputs, with a common connection. Inputs include transient suppression devices and series connected 100K ohm resistors, plus diode over-voltage clamps to the internal +5V supply. General I/O Pull-downs and Socket 5.6K ohm pull-down resistor SIPs are installed in sockets at each port (four-channels per port). Excitation (per port) Input Signal Voltage Range External excitation voltage for each four-channel port is limited to 35V or less. 0 to 35V DC, maximum. Input Current Supported Modbus Commands 293µA, typical at 35V DC. Input Signal Threshold TTL compatible with 100mV of hysteresis, typical. Thus, Low-to-High threshold is 1.5VDC, High-to-Low is 1.4VDC, typical. Limited to TTL levels of 0.8VDC (max. LOW level) and 2.0VDC (min. HIGH level). Input Resistance 5.6K ohms with standard factory pull-down resistors installed. 100K ohms without pull-downs. Input Hysteresis 100mV DC, typical. Input Response Time The command/response protocol for communicating with this module adheres to the Modbus/RTU standard for the following Modbus Functions. Read Coil (Output) Status Read Input Status Read Holding Registers Read Input Registers Force Single Coil (Output) Preset Single Register Reset Slave Force Multiple Coils (Outputs) Preset Multiple Registers Report Slave ID 500ns for low-to-high, 2µS for high-to-low, typical. Microcontroller samples inputs as a group every 10mS. LED Indicators ■ Discrete Outputs (905 & 906 models only) Output Type Power Requirements 12 independent, open-source, MOSFET switches that operate as high-side switches. Supply Current LEDs indicate power, status, and discrete level. 5.5 to 35V DC (0 to 250mA/channel continuous). External excitation voltage required. Supply 10V DC 24V DC 24V AC Output ON Resistance Isolation Current Draw 90mA maximum 40mA maximum 75mA rms maximum RELAY COIL/SOLENOID DRIVER (905MB/906MB) +5V CH 3 RTN EXC3 ON (1) + OFF (0) DIGITAL I/O COM D CH LED OPEN RTN D B A INTERNAL PULLDOWN IS OPEN FOR 905MB AC/DC POWER 10 TO 36V DC OR 24V AC NON-POLARIZED Locate Snubber at Coil TB1 EXC1 OUT CH 0 DIGITAL I/O SHARES RETURN RTN RTN Amplicon.co.uk Amplicon.com 5-35V Typical I/O TO OTHER 3 CHAN OF PORT R NETWORK COMMUNICATION TB3 CH 2 INTERNAL INPUT PULL-DOWNS ARE PRESENT CH 7 CH 8 TB4 CH 1 CH 6 CH 9 COM PWR CH 0 CH 5 CH10 905MB TB3 RS485 EXC1 CH 4 906MB shown. 904MB & 905MB are similar. CH11 36 35 34 33 32 31 DIGITAL I/O EXC2 DIGITAL IN or OUT RTN COM 46 45 44 43 42 41 CH 3 DIGITAL IN or OUT 21 22 23 24 25 26 INP TB2 COM CH 2 TB1 DIGITAL I/O SHARES COMMON CH 1 TB2 TB1 INP CH 0 DIGITAL IN or OUT 11 12 13 14 15 16 DIGITAL I/O EXC1 EXC TB4 TB1 RTN 900C-SIP Configuration Software Interface Package (includes software CD-ROM for Windows, RS-232/485 converter, and RS-485/three-wire cable) 5034-225 USB-to-RS232 adapter. See page 68 for more info. TBK-B02 Optional terminal block kit, barrier strip style, 4 pcs. TBK-S02 Optional terminal block kit, spring clamp style, 4 pcs. PS5R-D24 Power supply (24V DC, 2.1A). See Power Supplies on Page 199. For more information on software, network hardware, and mounting accessories, please see Pages 69-71. DIGITAL OUTPUT CONNECTIONS 5V TTL LOGIC INPUT IS ACTIVE HIGH AND PULLED DOWN INTERNALLY SPST RELAY Accessories Optional terminal blocks: barrier strip (left) and spring clamp (right). Cage clamp terminal is standard. DIGITAL INPUT CONNECTIONS (ACTIVE HIGH) UP TO 35V DC + 904MB-0900 Discrete input module 905MB-0900 Discrete output module 906MB-0900 Discrete input/output module 1500V AC for 60 seconds or 250V AC continuous. 3-way isolation between I/O, network, and power circuits. 0.15 ohms maximum. COM Models 10 to 36V DC, 22 to 26V AC. Output Voltage Range INP ■ Ordering Information CH 1 CH 2 CH 3 RTN IT and Instrumentation for industry Sales: +44 (0) 1273 570 220 Website: www.amplicon.com Email: [email protected] Datasheet 900MB Modbus/RS-485 Series DC Current/Voltage Input Module Four Discrete Outputs or Limit Alarms Inputs (2) Four DC Current or DC Voltage Inputs Outputs (4) Isolation Modbus RS-485 Inputs (2) Power 10-36V DC or 24V AC 913/914MB Multi-Channel Analog Input Modules DC Current, DC Voltage or AC Current Input Limit Alarms or Discrete Outputs Models 913MB: 4 current input channels 914MB: 4 voltage input channels Input Ranges 0 to 20mA DC, ±10V DC, 0 to 20A AC (with 5020-350 sensor) Output Four output channels: Open-drain MOSFETs (1A DC loads) 0 to 35V DC Network Communication Modbus-RTU high-speed RS-485 Power Requirement 10 to 36V DC, 24V AC Approvals CE marked. UL, cUL listed Class I; Division 2; Groups A, B, C, D. Amplicon.co.uk Amplicon.com ■ Description This signal conditioner is a four-channel analog input module with four discrete outputs. It provides isolation between input, output, power, and network circuits. Network communication adheres to the industry-standard RS-485 Modbus RTU protocol. AC and DC power sources are supported with nonpolarized, diode-coupled terminals. The inputs accommodate wide DC voltage or current ranges. Flexible discrete outputs operate as alarms or on/off controllers. As limit alarms, each discrete output can be configured with high and/or low setpoints exclusively tied to an analog input channel. Alarm trips function without host communication enabling low-cost stand-alone alarms, as well as local backup for the primary control system. Otherwise, on/off control is based on commands issued by the host system. Combining flexible transmitter functions, mixed signal I/O, alarm support, and a network interface in a single package, makes this instrument extremely powerful. Multi-channel design adds cost-efficiency and allows high-density mounting. Plus, safe, rugged construction makes these modules reliable for use in both control room and distributed field I/O applications. Custom module configurations are also possible (consult factory for details). ■ Special Features ■ ■ ■ ■ ■ ■ ■ ■ ■ Standard Modbus RTU protocol with high-speed RS-485 communication (up to 115K bps) 16-bit sigma-delta A/D yields 0.1% of range resolution and accuracy Four inputs in a single inch-wide module reduces system costs and saves panel space Four discrete outputs enable local limit alarms or host-controlled on/off switching Heavy-duty 1A solid-state relays provide dependable on/off control of industrial devices Self-calibration lowers maintenance costs by reducing periodic manual calibration checks Watchdog timers provide a configurable failsafe output state for use when host I/O communication is lost Four-way isolation eliminates potential ground loops between power, input, output, and network circuitry Self-diagnostics monitor microcontroller activity to detect operational failures (lock-up) and execute a reset to restore communication AC Current Sensor Model 5020-350 0.375" dia. Red Black IN+ IN- 5020-350 1.05" 1.35" TB1/TB2 For 913MB. Order separately (one per channel). IT and Instrumentation for industry Sales: +44 (0) 1273 570 220 Website: www.amplicon.com Email: [email protected] Datasheet Modbus I/O ■ Performance ■ ■ General Input Resolution Discrete Output Output Type Four independent open drain MOSFET switches with a common return that operate as low-side switches. 10 to 36V DC or 22 to 26V AC. Output Voltage Range Output Current Range Supply 10V DC 24V DC 24V AC 0 to 1A DC continuous for each output. Isolation Output OFF Leakage Current 1500V AC for 60 seconds or 250V AC continuous. 4-way isolation between input, network, power, and discrete I/O circuits. Inputs are isolated channel-tochannel for common mode voltage to ±4V DC. ■ 0.005% or 1 part in 20,000. Noise Rejection Power and Isolation Power Requirements 0 to 35V DC. External voltage source required. Normal mode: 40dB @ 60Hz, typical. Common mode: 140dB @ 60Hz, typical. Input Filter Bandwidth -3dB at 3Hz, typical. Input Conversion Rate 50µA maximum. 180ms per channel. Output ON Resistance Current Input (913MB) DC Current Input Ranges 0.15 ohms maximum. Range user-configured. Range selected applies to all 4.1ms typical, from receipt of command tochannels. gate transition of the output MOSFET. 0 to 1mA, 0 to 20mA, 4 to 20mA, 0 to 11.17mA (for use with 5020-350 AC sensor). Operation ■ Output Response Time 49.9 ohms. DC Current Input Accuracy ±0.1% of input range. ■ Voltage Input (914MB) DC Voltage Input Ranges ■ Range user-configured. Range selected applies to all channels. ±10V, ±5V, ±2.5V, ±1.25V, ±625mV, ±313mV, ±156mV, ±78mV The command/response protocol for communicating with this module adheres to the Modbus/RTU standard for the following Modbus Functions. Read Coil (Output) Status Read Holding Registers Read Input Registers Force Single Coil (Output) Preset Single Register Force Multiple Coils (Output) Preset Multiple Registers Report Slave ID Reset Slave Communication Supported Modbus Commands Input Impedance 110.5K ohms. DC Voltage Input Accuracy ±0.1% of input range. LED Indicators LEDs indicate power, status, and discrete level/alarm. ANALOG INPUT CONNECTIONS IN1- 900C-SIP Configuration Software Interface Package (includes software CD-ROM for Windows, RS-232/485 converter, and RS-485/three-wire cable) 5034-225 USB-to-RS232 adapter. See page 68 for more info. 5020-350 AC current sensor for 913MB. One for each channel. (See page 205) TBK-B02 Optional terminal block kit, barrier strip style, 4 pcs. TBK-S02 Optional terminal block kit, spring clamp style, 4 pcs. PS5R-D24 Power supply (24V DC, 2.1A). See Power Supplies on Page 199. For more information on software, network hardware, and mounting accessories, please see Pages 69-71. RTN OUT1 OUT0 IN3- COM D D B A MECHANICAL RELAY INTERFACE DIGITAL OUTPUT 36 35 34 33 32 31 IN3+ PWR AC/DC POWER 10 TO 36V DC OR 24V AC NON-POLARIZED TB1/TB2 IN+ - + UP TO 35V DC NETWORK COMMUNICATION TB3 TB2 + IN2- RS485 IN- - OUT2 COM IN2+ INPUTS 2,3 21 22 23 24 25 26 ANALOG INPUT IN+ VOLTAGE INPUT VOLTAGE SOURCE Accessories TB4 TB1 TB1/TB2 OUT3 TB3 TB2 CURRENT INPUT RTN 46 45 44 43 42 41 IN- IN0IN1+ DIGITAL OUTPUTS IN+ IN0+ INPUTS 0,1 11 12 13 14 15 16 ANALOG INPUT TB1/TB2 + 913MB-0900 914MB-0900 DC current (913MB) or voltage ( 914MB) input module DIGITAL OUTPUT CONNECTIONS + DC CURENT (mA) ■ Ordering Information TB4 TB1 TWO-WIRE TRANSMITTER 2-WIRE XMTR - Current Draw 125mA maximum 50mA maximum 100mA rms maximum Models Digital outputs are set to their OFF state following a software or power-on reset. Outputs can optionally be set to user-defined states following a watchdog timeout. Watchdog timeout output control takes precedence over limit alarm control. Alarm control takes precedence over host control. DC Current Input Resistance Supply Current OUT RTN TB4 RTN RTN OUT 3 OUT OUT 2 DIGITAL OUT SHARES RETURN IN- RTN OUT 1 OUT Amplicon.co.uk Amplicon.com IT and Instrumentation for industry Sales: +44 (0) 1273 570 220 Website: www.amplicon.com Email: [email protected] Datasheet 900MB Modbus/RS-485 Series Analog Output Module Four Analog Outputs Outputs (2) DC Current or DC Voltage Four Discrete Outputs Outputs (4) Isolation RS-485 Modbus Outputs (2) 10-36V DC or 24V AC 917/918MB Multi-Channel Analog Output Modules DC Current or DC Voltage Outputs Discrete Outputs Models 917MB: 4 current output channels 918MB: 4 voltage output channels Analog Output 917MB: 0 to 20mA, 4 to 20mA, 0 to 1mA DC 918MB: 0 to 10V, 0 to 5V, 0 to 1V DC Discrete Output Four output channels: Open-drain MOSFETs (1A DC loads) 0 to 35V DC Network Communication Modbus-RTU high-speed RS-485 Power Requirement 12 to 36V DC (917MB), 10 to 36V DC (918MB), 24V AC ■ Description These modules drive four analog output channels and also feature four discrete outputs for on/off control. Isolation separates the output, power, and network circuits. Network communication adheres to the industry-standard RS-485 Modbus RTU protocol. AC and DC power sources are supported with nonpolarized, diode-coupled terminals. The analog outputs generate a signal based on communication from the host. They accommodate wide DC voltage or current ranges. Discrete outputs provide simple on/off switching capability (open-drain) for external devices. Combining analog outputs, on/off controllers, and a network interface in a single package, makes this instrument extremely powerful. Multi-channel design adds cost-efficiency and allows high-density mounting. Plus, safe, rugged construction make it reliable for both control room and distributed field I/O use in a broad range of temperature control applications. Custom module configurations are also possible (consult factory for details). ■ Special Features ■ ■ ■ ■ ■ ■ ■ ■ ■ Standard Modbus RTU protocol with high-speed RS-485 communication (up to 115K bps) 12-bit D/A yields 0.1% of span resolution and accuracy Four analog outputs in an inch-wide module reduces system costs and saves panel space Four discrete outputs enable host-controlled on/off switching Heavy-duty 1A solid-state relays provide dependable on/off control of industrial devices Self-calibration lowers maintenance costs by reducing periodic manual calibration checks Watchdog timers provide a configurable failsafe output state for use when host I/O communication is lost Three-way isolation eliminates potential ground loops between power, output, and network circuitry Self-diagnostics monitor microcontroller activity to detect operational failures (lock-up) and execute a reset to restore communication Approvals CE marked. UL, cUL listed Class I; Division 2; Groups A, B, C, D. Amplicon.co.uk Amplicon.com Power IT and Instrumentation for industry Sales: +44 (0) 1273 570 220 Website: www.amplicon.com Email: [email protected] Datasheet Modbus I/O ■ Performance ■ General Analog Output Resolution Range user-configured. Selection applies to all channels. Resolution Accuracy (% span) Output Range 0 to 1V 0.274% ±0.6% (±6mV) 0 to 5V 0.055% ±0.1% (±5mV) 0 to 10V 0.027% ±0.1% (±10mV) Voltage Output (918MB) DC Voltage Output Ranges ■ See current/voltage output specifications for more information. Ambient Temperature Effect Output Impedance LED Indicators 1 ohm. LEDs indicate power, status, and discrete level/alarm. Output Short Circuit Protection ■ Ambient Temperature Integral Non-Linearity 11.255V DC typical. ±0.1% of span or ±2 LSB typical, whichever is larger, for spans equal to or greater than 5V. Output Current Current Output (917MB) DC Current Output Ranges Range user-configured. Range selected applies to all channels. Resolution Accuracy (% span) Output Range 0 to 1mA 0.554% ±2.0% (±0.002mA) 0 to 20mA 0.028% ±0.1% (±0.02mA) 4 to 20mA 0.035% ±0.1% (±0.02mA) Communication Supported Modbus Commands ■ 0 to 10mA DC maximum. Maximum Output Voltage ■ 4.1ms typical, from receipt of command to gate transition of the output MOSFET. The command/response protocol for communicating with this module adheres to the Modbus/RTU standard for the following Modbus Functions. Read Coil (Output) Status Report Slave ID Read Holding Registers Reset Slave Read Input Registers Force Single Coil (Output) Preset Single Register Force Multiple Coils (Output) Preset Multiple Registers Better than ±0.001% of output span per °C, or ±1.0uV/°C, whichever is greater. Operation (917MB): -25°C to 60°C* (-13°F to 140°F*). Operation (918MB): -25°C to 70°C (-13°F to 158°F). Storage: -40°C to +85°C (-40°F to +185°F). * Limit 917MB maximum ambient to 50°C (122°F) when using supply voltages less than 15V DC. Output Response Time Power and Isolation Power Requirements Included. Response Time 110µs rise time typical, 150µs fall time typical, unloaded, for output to reach 98% of the final value in response to a step command. Time varies with load. 10 to 36V DC (918MB), 12 to 36V DC (917MB) 22 to 26V AC. Supply Current 22.5mA DC typical. Discrete Output Output Type Integral Non-Linearity Four independent open drain MOSFET switches with a common return that operate as low-side switches. Supply 10V DC 12V DC 24V DC 24V AC Output Voltage Range Isolation Maximum Output Current ■ ±0.1% of span or ±2 LSB typical, whichever is larger, for spans equal to or greater than 16mA. 12V minimum, 12.7V typical. 0 to 35V DC (up to 1A/channel continuous). External voltage source required. Output Load Resistance Range Output ON Resistance Output Compliance 0 to 630 ohms typical. 0.15 ohms maximum. Response Time Operation Digital outputs are set to their OFF state following a software or power-on reset. Outputs may be set to user-defined states following a watchdog timeout. Watchdog timeout output control takes precedence over limit alarm control. Alarm control takes precedence over host control. 11ms typical into 500 ohms, for measurement to reach 98% of the final value in response to a step command. Actual response time will vary with load. Current Draw (917) Not Recommended 275mA maximum 120mA maximum 210mA rms max. Current Draw (918) 100mA maximum 85mA maximum 45mA maximum 85mA rms max. 1500V AC for 60 seconds or 250V AC continuous. 3-way isolation between outputs, network, and power circuits. ■ Ordering Information Models 917MB-0900 918MB-0900 DC current (917MB) or voltage (918MB) output module Accessories TB1 + TB2 RTN V3+ RTN RTN RTN OUT1 OUT0 COM COM D D PWR RTN RTN OUT2 TB3 TB2 V2+ RTN OUT3 B A DIGITAL OUTPUT WIRING CONNECTIONS SAME AS 913/914MB 36 35 34 33 32 31 I3+ RTN RS485 RTN RTN V1+ RTN ANALOG OUTPUTS RTN 21 22 23 24 25 26 I2+ ANALOG OUTPUTS 21 22 23 24 25 26 NETWORK COMMUNICATION TB3 RTN TB2 TB1/TB2 V+ + ANALOG OUTPUT RTN RTN TB4 RTN DC VOLTAGE OUTPUT RL TB1 RL I1+ RTN V0+ RTN 46 45 44 43 42 41 ANALOG OUTPUT RTN DIGITAL OUTPUTS TB1/TB2 I+ RTN 11 12 13 14 15 16 I I0+ ANALOG OUTPUTS 11 12 13 14 15 16 DC CURRENT OUTPUT TB4 TB1 ANALOG OUTPUTS ANALOG OUTPUT CONNECTIONS AC/DC POWER 10 TO 36V DC OR 24V AC NON-POLARIZED 900C-SIP Configuration Software Interface Package (includes software CD-ROM for Windows, RS-232/485 converter, and RS-485/three-wire cable) 5034-225 USB-to-RS232 adapter. See page 68 for more info. TBK-B02 Optional terminal block kit, barrier strip style, 4 pcs. TBK-S02 Optional terminal block kit, spring clamp style, 4 pcs. PS5R-D24 Power supply (24V DC, 2.1A). See Power Supplies on Page 199. For more information on software, network hardware, and mounting accessories, please see Pages 69-71. omag.com www.acromag.com Amplicon.co.uk Amplicon.com IT and Instrumentation for industry Sales: +44 (0) 1273 570 220 Website: www.amplicon.com Email: [email protected] Datasheet 900MB Modbus/RS-485 Series Thermocouple/Millivolt Input Module Four Discrete Outputs or Limit Alarms Inputs (2) Four Thermocouple or DC Millivolt Inputs Outputs (4) Isolation RS-485 Modbus Inputs (2) 10-36V DC or 24V AC 924MB Multi-Channel Temperature Control Modules Thermocouple or Millivolt Input Limit Alarms or Discrete Outputs Model 924MB: 4 input channels Input Four input channels: Thermocouple (types J, K, T, R, S, E, B, N), ±100mV DC Output Four output channels: Open-drain MOSFETs (1A DC loads) 0 to 35V DC Network Communication Modbus-RTU high-speed RS-485 Power Requirement 10 to 36V DC, 24V AC Approvals CE marked. UL, cUL listed Class I; Division 2; Groups A, B, C, D. Amplicon.co.uk Amplicon.com ■ Description This signal conditioner is a four-channel analog input module with four discrete outputs. It filters and linearizes thermocouple inputs while providing isolation between input, output, power, and network circuits. Cold junction compensation and upscale/downscale sensor break detection are standard. AC and DC power sources are supported with nonpolarized, diode-coupled terminals. The programmable inputs accommodate eight thermocouple types plus wide-range millivolt signals. Flexible discrete outputs operate as alarms or on/off controllers. As limit alarms, each discrete output can be configured with high and/or low setpoints exclusively tied to an analog input channel. Alarm trips function without host communication enabling low-cost stand-alone alarms as well as local backup for the primary control system. Otherwise, on/off control is based on commands issued by the host system. Combining flexible transmitter functions, mixed signal I/O, alarm support, and a network interface in a single package, makes this instrument extremely powerful. Multi-channel design adds cost-efficiency and allows high-density mounting. Plus, safe, rugged construction makes these modules reliable for use in both control room and distributed field I/O applications. Custom module configurations are also possible (consult factory for details). Power ■ Special Features ■ ■ ■ ■ ■ ■ ■ ■ ■ Standard Modbus RTU protocol with high-speed RS-485 communication (up to 115K bps) 16-bit sigma-delta A/D yields 0.1°C resolution and 0.5°C measurement accuracy Thermocouple linearization and sensor break detection ensure reliable measurements Four discrete outputs enable local temperature limit alarms or host-controlled on/off switching Heavy-duty 1A solid-state relays provide dependable on/off control of industrial devices Self-calibration lowers maintenance costs by reducing periodic manual calibration checks Watchdog timers provide a configurable failsafe output state for use when host I/O communication is lost Four-way isolation eliminates potential ground loops between power, input, output and network circuitry Self-diagnostics monitor microcontroller activity to detect operational failures (lock-up) and execute a reset to restore communication IT and Instrumentation for industry Sales: +44 (0) 1273 570 220 Website: www.amplicon.com Email: [email protected] Datasheet Modbus ■ Performance ■ General Input Resolution ±100mV DC. DC Millivolt Input Millivolt Input Ranges ■ Power and Isolation Power Requirements ■ 10 to 36V DC, 22 to 26V AC. Discrete Output Output Type ■ Better than ±0.005% of input span per °C, or ±1.0uV/°C, whichever is greater. Supply Current Four independent open drain MOSFET switches with a common return that operate as low-side switches. Noise Rejection Normal mode: 40dB @ 60Hz, typical. Common mode: 140dB @ 60Hz, typical. Output Voltage Range 0 to 35V DC, 1A DC maximum for each output. External voltage source required. Input Filter Bandwidth -3dB at 3Hz, typical. Output ON Resistance Input Conversion Rate 0.15 ohms maximum. 90ms per channel. Operation Thermocouple Input Thermocouple Input Ranges ■ Thermocouple type user-configured. Type selected applies to all channels. Signal linearization, cold-junction compensation, and open circuit or lead break detection are included. Accuracy TC °C Range (°F Range) J -210 to 760°C (-346 to 1400°F) ±0.5°C K -200 to 1372°C (-328 to 2502°F) ±0.5°C T -260 to 400°C (-436 to 752°F) ±0.5°C R -50 to 1768°C (-58 to 3214°F) ±1.0°C S -50 to 1768°C (-58 to 3214°F) ±1.0°C E -200 to 1000°C (-328 to 1832°F) ±0.5°C B 260 to 1820°C (500 to 3308°F) ±1.0°C N -230 to 1300°C (-382 to 2372°F) ±1.0°C Note 1: Accuracy is given with CJC switched off. Relative inaccuracy with CJC enabled may increase by ±0.5°C. Thermocouple Break Detection TC sensor failure can be configured for either upscale or downscale. Selection applies to all channels. Supply 10V DC 24V DC 24V AC Current Draw 100mA maximum 45mA maximum 85mA rms maximum Isolation 1500V AC for 60 seconds or 250V AC continuous. 4-way isolation between input, network, power and discrete I/O circuits. Inputs are isolated channel-tochannel for common mode voltage to ±5V DC. Digital outputs are set to their OFF state following a software or power-on reset. Outputs can optionally be set to user-defined states following a watchdog timeout. Watchdog timeout output control takes precedence over limit alarm control. Alarm control takes precedence over host control. Output Response Time 4.1ms typical, from receipt of command to gate transition of the output MOSFET. Communication Supported Modbus Commands ■ The command/response protocol for communicating with this module adheres to the Modbus/RTU standard for the following Modbus Functions. Read Coil Read Holding Registers Read Input Registers Force Single Coil Preset Single Register Force Multiple Coils Preset Multiple Registers Report Slave ID Reset Slave ■ Ordering Information 924MB-0900 Thermocouple/millivolt input module 900C-SIP Configuration Software Interface Package (includes software CD-ROM for Windows, RS-232/485 converter, and RS-485/three-wire cable) 5034-225 USB-to-RS232 adapter. See page 68 for more info. TBK-B01 Optional terminal block kit, barrier strip style, 2 pcs. (Does not include terminal block for input wiring.) TBK-S02 Optional terminal block kit, spring clamp style, 2 pcs. (Does not include terminal block for input wiring.) PS5R-D24 Power supply (24V DC, 2.1A). See Power Supplies on Page 199. For more information on software, network hardware, and mounting accessories, please see Pages 69-71. DIGITAL OUTPUT CONNECTIONS TB4 TB1 IN+ IN- IN0IN1+ IN1- DIGITAL OUTPUTS 11 12 13 14 15 16 ANALOG INPUT TB1/TB2 IN0+ CJC-0 INPUTS 0,1 TC INPUT OUT0 COM COM D D PWR IN3- RS485 IN- IN2IN3+ RTN OUT1 B A MECHANICAL RELAY INTERFACE + DIGITAL OUTPUT 36 35 34 33 32 31 21 22 23 24 25 26 ANALOG INPUT CJC-1 INPUTS 2,3 IN+ OUT2 UP TO 35V DC TB4 TB1 TB1/TB2 IN2+ OUT3 TB3 TB2 VOLTAGE INPUT RTN 46 45 44 43 42 41 ANALOG INPUT CONNECTIONS NETWORK COMMUNICATION TB3 TB2 - LEDs indicate power, status, and discrete level/alarm. ±0.1% of input range. Ambient Temperature Effect VOLTAGE SOURCE LED Indicators Millivolt Input Accuracy ±100mV DC input: 0.1%. Thermocouple input: 0.1°C (0.18°F). + I/O AC/DC POWER 10 TO 36V DC OR 24V AC NON-POLARIZED OUT RTN TB4 RTN RTN OUT 3 OUT OUT 2 DIGITAL OUT SHARES RETURN RTN OUT 1 OUT 0 Amplicon.co.uk Amplicon.com IT and Instrumentation for industry Sales: +44 (0) 1273 570 220 Website: www.amplicon.com Email: [email protected] Datasheet 900MB Modbus/RS-485 Series RTD/Resistance Input Module Four Discrete Outputs or Limit Alarms Inputs (2) Four RTD or Resistance Inputs Outputs (4) Isolation RS-485 Modbus Inputs (2) 10-36V DC or 24V AC 932/934MB Multi-Channel Temperature Control Modules RTD or Resistance Input Limit Alarms or Discrete Outputs Models 932MB: 2 input channels, 2 relay outputs 934MB: 4 input channels, 4 relay outputs Input RTD (100 ohm Pt, 120 ohm Ni, 10 ohm Cu), Resistance (0 to 500 ohms) Output Solid-state relays, Form A, SPST-NO Network Communication Modbus-RTU high-speed RS-485 Power Requirement 10 to 36V DC, 24V AC Approvals CE marked. UL, cUL listed Class I; Division 2; Groups A, B, C, D. Amplicon.co.uk Amplicon.com ■ Description This signal conditioner is a dual or quad-channel analog input module with one discrete/relay output per input channel and a Modbus interface. It filters and linearizes RTD or resistance inputs while providing isolation between input, output, power, and network circuits. Lead wire compensation and upscale/downscale sensor break detection are standard. Low voltage AC and DC power sources are supported with nonpolarized, diode-coupled terminals. The programmable inputs accommodate four RTD types plus wide-range resistance signals. Flexible discrete outputs operate as alarms or on/off controllers. As limit alarms, each discrete output can be configured with high and/or low setpoints exclusively tied to an analog input channel. Alarm trips function without host communication enabling low-cost stand-alone alarms as well as local backup for the primary control system. Otherwise, on/off control is based on commands issued by the host system. Combining flexible transmitter functions, mixed signal I/O, alarm support, and a network interface in a single package, makes this instrument extremely powerful. Multi-channel design adds cost-efficiency and allows high-density mounting. Plus, safe, rugged construction makes these modules reliable for use in both control room and distributed field I/O applications. Custom module configurations are also possible (consult factory for details). Power ■ Special Features ■ ■ ■ ■ ■ ■ ■ ■ ■ Standard Modbus RTU protocol with high-speed RS-485 communication (up to 115K bps) 16-bit sigma-delta A/D yields 0.1°C resolution and 0.25°C accuracy (Pt, Ni RTDs) RTD linearization and sensor break detection ensure reliable measurements Discrete relay outputs enable local temperature limit alarms or host-controlled on/off switching Heavy-duty 1A solid-state relays provide dependable on/off control of industrial devices Self-calibration lowers maintenance costs by reducing periodic manual calibration checks Watchdog timers provide a configurable failsafe output state for use when host I/O communication is lost Four-way isolation eliminates potential ground loops between power, input, output and network circuitry Self-diagnostics monitor microcontroller activity to detect operational failures (lock-up) and execute a reset to restore communication IT and Instrumentation for industry Sales: +44 (0) 1273 570 220 Website: www.amplicon.com Email: [email protected] Datasheet Modbus ■ Performance RTD/Resistance Input Input Ranges ■ Input type user-configured. Type selected applies to all channels. RTD linearization, lead wire compensation, and open circuit or lead break detection are included. Accuracy Input Type Alpha Input Range Pt 100 ohm 1.3850 -200 to 850°C ±0.25°C Pt 100 ohm 1.3911 -200 to 850°C ±0.25°C Ni 120 ohm 1.6720 -80 to 320°C ±0.25°C Cu 10 ohm 1.4272 -200 to 260°C ±1.00°C Resistance linear 0 to 500 ohms ±0.05 ohm Resolution Input Type Pt 100 ohm Pt 100 ohm Ni 120 ohm Cu 10 ohm Resistance Alpha 1.3850 1.3911 1.6720 1.4272 linear Resolution 0.1°C 0.1°C 0.1°C 0.2°C 7.8125 milliohms I/O Lead-Wire Compensation Isolation Inherent for 3-wire RTD. The maximum lead resistance is 25 ohms per lead (Pt), 20 ohms per lead (Ni), 10 ohms per lead (Cu). All lead wires must be of equal size and length. 1500V AC for 60 seconds or 250V AC continuous. 4-way isolation between input, network, power and discrete I/O circuits. Inputs are isolated channel-tochannel for common mode voltage to ±5V DC. Discrete Output Output Type ■ Ordering Information ■ Solid-State Relay (SSR), one Form A (SPST-NO) switch per input channel. Outputs share a common return connection at the RTN terminals for low side switching 0 to 48V DC, 1A DC. 932MB-0900 Two channel RTD/Resistance input module 934MB-0900 Four channel RTD/Resistance input module Output ON Resistance Accessories Output Voltage Range 0.4 ohms maximum. Output Response Time 4.1ms typical, from receipt of command to gate transition of the output MOSFET. Operation Better than ±0.005% of input span per °C, or ±1.0uV/°C, whichever is greater. Digital outputs are set to their OFF state following a software or power-on reset. Outputs can be set to user-defined states following a watchdog timeout. Noise Rejection ■ Ambient Temperature Effect Communication Supported Modbus Commands Normal mode: 40dB @ 60Hz, typical. Common mode: 130dB @ 60Hz, typical. Input Filter Bandwidth -3dB at 3Hz, typical. Input Conversion Rate 300ms per channel typical. RTD Break Detection Sensor failure can be configured for either upscale or downscale. Selection applies to all channels. The command/response protocol for communicating with this module adheres to the Modbus/RTU standard for the following Modbus Functions. Read Holding Registers Read Coil Read Input Registers Reset Slave Preset Single Register Report Slave ID Force Multiple Coils Force Single Coil Preset Multiple Register 900C-SIP Configuration Software Interface Package (includes software CD-ROM for Windows, RS-232/485 converter, and RS-485/three-wire cable) 5034-225 USB-to-RS232 adapter. See page 68 for more info. TBK-B02 Optional terminal block kit, barrier strip style, 4 pcs. TBK-S02 Optional terminal block kit, spring clamp style, 4 pcs. PS5R-D24 Power supply (24V DC, 2.1A). See Power Supplies on Page 199. For more information on software, network hardware, and mounting accessories, please see Pages 69-71. LED Indicators LEDs indicate power, status, and discrete level/alarm. Excitation Current 1mA DC typical, all types. Power and Isolation Power Requirements ■ Optional terminal blocks: barrier strip (left) and spring clamp (right). Cage clamp terminal is standard. 10 to 36V DC (56mA max. at 24V DC). 22 to 26V AC (94mA rms max. at 24V AC). DIGITAL OUTPUT CONNECTIONS IN- TB1/TB2 ANALOG INPUT INJUMP TB1 INL IN+ INL RTN OUT0 TB2 TB3 IN2+ LRTN IN2INL2 IN3+ IN3INL3 COM PWR B D D A MECHANICAL RELAY INTERFACE + DIGITAL OUTPUT UP TO 48V DC NETWORK COMMUNICATION TB3 INL OUT1 RS485 IN- RTN OUT2 36 35 34 33 32 31 IN+ TB2 TB1/TB2 IN1L 934MB Only 2-WIRE RTD IN1- RTD INPUTS 2,3 21 22 23 24 25 26 ANALOG INPUT IN1+ OUT3 TB4 DECADE BOX DIG. OUT DIG. OUT IN+ IN0L 932MB/934MB TB1/TB2 IN0- RTD INPUTS 0,1 RESISTANCE 11 12 13 14 15 16 3-WIRE RTD TB4 TB1 IN0+ 46 45 44 43 42 41 ANALOG INPUT CONNECTIONS AC/DC POWER 10 TO 36V DC OR 24V AC NON-POLARIZED JUMP OUT RTN TB4 OUT 3 RTN RTN OUT OUT 2 DIGITAL OUT SHARES RETURN OUT 1 RTN OUT 0 Amplicon.co.uk Amplicon.com IT and Instrumentation for industry Sales: +44 (0) 1273 570 220 Website: www.amplicon.com Email: [email protected] Datasheet 900MB Modbus/RS-485 Series Frequency/Counter Module Inputs (2) Two Frequency or Pulse Waveform Inputs Two Discrete Outputs or Limit Alarms Outputs (2) Isolation RS-485 10-36V DC or 24V AC 942MB Frequency/ Pulse Counter Modules Periodic or Pulse Waveform Input Limit Alarms or Discrete Outputs Model 942MB: 2 input channels Input Two input channels: 0 to 50KHz in three selectable ranges Amplitudes up to 140V AC or 200V peak Pulse counter range of 0 to 65535 Output Two output channels: Solid-state relays (1A DC loads) 0 to 48V DC Network Communication Modbus-RTU high-speed RS-485 Power Requirement 10 to 36V DC, 24V AC Approvals CE marked. UL, cUL listed Class I; Division 2; Groups A, B, C, D. Amplicon.co.uk Amplicon.com ■ Description This signal conditioner is a two-channel analog input module with discrete outputs and Modbus communication. It conditions periodic or pulse waveform inputs and provides solid-state relays for limit alarms or ON/OFF control. Versatile inputs accommodate many applications using TTL, magnetic pickups, proximity sensors, or a variety of switches (high/low-side transistor, dry contact, open drain, open collector). Bipolar and unipolar waveforms are supported with a selectable input bias that accepts both zero and non-zero crossing signals. Voltage threshold and relative hysteresis are also user selectable. Inputs may also function as event counters with separate microcontrollers for each channel. The module counts pulses on the positive or negative edge. It can wrap around to zero for continuous counting, latch at a programmed count value (setpoint), or automatically reset itself to zero after reaching a setpoint value. Software controls enable remote resets. A variety of filters help remove noise, jitter, and other mechanical effects to prevent false counts. The discrete outputs can operate as independent alarms or provide on/off control regulated by the host system. As limit alarms, each output can be set for high and/or low setpoints exclusively tied to an analog input. These low cost modules are ideal for standalone alarms as well as for local backup of the primary control system. Modbus Power ■ Special Features ■ ■ ■ Standard Modbus RTU protocol with high-speed RS-485 communication (up to 115K bps) Separate microcontrollers on each channel for pulse counting and period measurement Solid-state relay outputs enable local limit alarms or host-controlled on/off switching ■ Bipolar and unipolar input signal support ■ Programmable pulse counter functions ■ Input filtering functions include hysteresis, averaging, debounce, relay time delay, and alarm deadband controls ■ 4-way isolation (input, output, power, network) ■ Watchdog timers provide a failsafe output ■ Self-diagnostics monitor microcontroller activity to detect operational failures (lock-up) and execute a reset to restore communication Optional terminal blocks: barrier strip (left) and spring clamp (right). Cage clamp terminal is standard. IT and Instrumentation for industry Sales: +44 (0) 1273 570 220 Website: www.amplicon.com Email: [email protected] Datasheet Modbus I/O ■ Performance Input Filter Bandwidth LED Indicators -3dB at 35kHz, typical. LEDs indicate power, status, and discrete level/alarm. Frequency/Counter Input Input Ranges Input Pullup/Pulldown ■ ■ Input type user-configured. Applies to both channels. Input Range Accuracy Accuracy over Temp. 0 to 100Hz ±0.04Hz ±0.06Hz 0 to 1000Hz ±0.4Hz ±0.6Hz 0 to 50,000Hz ±10Hz ±15Hz 0 to 65,535 pulses ±1 pulse ±1 pulse Software selectable 2.7K ohm input pullup to +5V and a 1K ohm input pulldown to return. The resistors may also be left floating (none). Input Debounce Amplitude: 0 to 3V minimum range, 0 to 200V peak maximum range. Threshold: Configurable for 1.5V or 5V, typical. Hysteresis: Configurable for ±25mV (at 1.5V threshold), or ±83mV (at 5.0V threshold), typical. Discrete Output Output Type Solid-State Relay (SSR), one Form A (SPST-NO) switch per input channel. Outputs share a common return connection at the RTN terminals for low-side switching Amplitude (0-20KHz): ±50mV minimum (with ±25mV hysteresis), or ±150mV minimum (with ±83mV hysteresis), to ±200V peak maximum. Amplitude (Above 20KHz): ±100mV minimum (with ±25mV hysteresis), or ±200mV minimum (with ±83mV hysteresis), to ±200V peak maximum. Threshold: 0mV nominal, 0.01V typical with ±25mV hysteresis; 0.03V typical with ±83mV hysteresis. Hysteresis: Configurable for ±25mV or ±83mV, typical. Output Voltage Range 0 to 100Hz input range: 0.01Hz 0 to 1000Hz input range: 0.1Hz 0 to 50,000Hz input range: 1Hz Pulse counter: 1 pulse Output ON Resistance 0.4 ohms maximum. Output Response Time 4.1ms typical, from receipt of command to gate transition of the output MOSFET. Operation Communication Supported Modbus Commands ■ Minimum Input Pulse Width The command/response protocol for communicating with this module adheres to the Modbus/RTU standard for the following Modbus Functions. Read Holding Registers Read Coil Reset Slave Read Input Registers Preset Single Register Report Slave ID Force Multiple Coils Force Single Coil Preset Multiple Registers 10µS (frequency input); 5mS (pulse input). Counting Rate 100Hz maximum counting rate (5mS ON and 5mS OFF for 10mS period or 100Hz). Input Impedance 35K ohms, typical. 900C-SIP Configuration Software Interface Package (includes software CD-ROM for Windows, RS-232/485 converter, and RS-485/three-wire cable) 5034-225 USB-to-RS232 adapter. See page 68 for more info. TBK-B02 Optional terminal block kit, barrier strip style, 4 pcs. TBK-S02 Optional terminal block kit, spring clamp style, 4 pcs. PS5R-D24 Power supply (24V DC, 2.1A). See Power Supplies on Page 199. For more information on software, network hardware, and mounting accessories, please see Pages 69-71. TB4 TB1 V+ V+ PWR or TTL D V+ B A + DIGITAL OUTPUT UP TO 48V DC NETWORK COMMUNICATION TB3 FRQ0 RTN DRY CONTACT COM COM D + FRQ0 RTN OUT0 TB3 RS485 HIGH-SIDE SWITCH (Open Collector/Drain) RTN TB4 RTN OUT1 MECHANICAL RELAY INTERFACE 36 35 34 33 32 31 RTN MAGNETIC INPUT RTN TB1 FRQ1 FRQ0 or RTN NC FRQ1 DIGITAL OUTPUTS FRQ0 - FRQ0 RTN 46 45 44 43 42 41 ANALOG INPUT + NC FREQ. INPUT 0, 1 TB1 11 12 13 14 15 16 LOW-SIDE SWITCH (Open Collector/Drain) FREQUENCY INPUT - 942MB-0900 Frequency/counter input module DIGITAL OUTPUT CONNECTIONS ANALOG INPUT CONNECTIONS MAGNETIC PICKUP ■ Ordering Information Accessories 0 to 48V DC, 1A DC. Digital outputs are set to their OFF state following a software or power-on reset. Outputs can be set to user-defined states following a watchdog timeout. Resolution FREQUENCY GENERATOR 1500V AC for 60 seconds or 250V AC continuous. 4-way isolation between input, network, power and discrete I/O circuits. Inputs are isolated channel-tochannel for common mode voltage to ±5V DC. Noise Rejection ■ Bipolar (Zero-Crossing) Input Configuration 10 to 36V DC. 22 to 26V AC. Isolation 0 to 1.375 seconds, configurable in 5mS increments. Common mode: 80dB @ 60Hz, typical with 100 ohm input unbalance. Unipolar Input Configuration Power and Isolation Power Requirements AC/DC POWER 10 TO 36V DC OR 24V AC NON-POLARIZED OUT RTN TB4 RTN RTN OUT 3 OUT FRQ0 RTN FRQ0 RTN OUT 2 DIGITAL OUT SHARES RETURN RTN OUT 1 OUT 0 Amplicon.co.uk Amplicon.com IT and Instrumentation for industry Sales: +44 (0) 1273 570 220 Website: www.amplicon.com Email: [email protected] Datasheet 900MB Series 900MB Series Technical Diagrams TB4 TB3 Acromag DFT D D TB3 B A PWR TB1 2.34 (59.4) TB2 2 3 CL RS485 3.75 (95.3) 0 1 36 35 34 33 32 31 TB4 ST COM COM 46 45 44 43 42 41 RUN 4.68 (118.9) "T" Rail Din Mounting Din EN 50022, 35mm 11 12 13 14 15 16 21 22 23 24 25 26 TB2 TB1 3.90 (99.1) 1.05 (26.7) NOTE: ALL DIMENSION ARE IN INCHES (MILLIMETERS) 4.35 (110.5) PERSONAL COMPUTER W/ WINDOWS 95/98 OR NT RS-232 SERIAL PORT CONNECTOR AT BACK OF PC PC RUNNING ACROMAG MODBUS CONFIG SOFTWARE INSTALL MODBUS CONFIGURATION SOFTWARE RS-232 TO RS-485 CONVERTER MODEL 5034-214 CONNECT THE RS-232 SIDE OF CONVERTER TO THE PC CAUTION: DO NOT CONNECT THE CABLE DIRECTLY TO THE PC WITHOUT THE CONVERTER, OR DAMAGE TO THE MODULE MAY RESULT. CABLE 5034-202 CONNECT THE RS-485 SIDE OF CONVERTER TO THE CABLE USB-to-RS232 Adapter 900C-SIP COMMUNICATION CONNECTIONS CB A CONNECT WIRES AS SHOWN COM D TB4 Acromag RUN A B Amplicon.co.uk Amplicon.com COLOR RS-485 A RED D B BLACK D C GREEN COM PWR REFER TO THE USER'S MANUAL THAT CAME WITH YOUR MODULE TO COMPLETE THE MODULE'S POWER AND I/O CONNECTIONS ANY 900MB MODULE TB2 TB1 D RS485 TB1 R D TB3 DEFAULT MODE SWITCH PUSH FOR DEFAULT MODE. STATUS LED FLASHES IN DEFAULT MODE. WIRE 36 35 34 33 32 31 COM 1 3 46 45 44 43 42 41 TB3 COM DFT 0 RUN/PWR LED (GREEN) STATUS LED (YELLOW) TB4 ST 2 D TB4 11 12 13 14 15 16 21 22 23 24 25 26 TB1 TB2 IT and Instrumentation for industry Sales: +44 (0) 1273 570 220 Website: www.amplicon.com Email: [email protected] Model 5034-225 USB-to-RS232 adapter Length: 3.15 in (8.0 cm) Height: 0.80 in (2.03 cm) Width: 1.75 in (4.44 cm) Weight: 1.6 oz (45.36 g) Datasheet Modbus Software Interface Package Model No. 900C-SIP RS-485 Cable (DB-9) RS-232 to RS-485 Converter (non-isolated) Configuration Software for Windows 900C-SIP Software Interface Package. Includes Configuration Software (5034-186), Non-isolated RS-232 to RS-485 Serial Port Converter (5034-214), and RS-485 Cable (5034-202). Items can also be ordered separately below. 5034-186 Configuration Software for Windows (95/98/2000/ME/ NT4/XP) on CD-ROM. 5034-214 Non-isolated RS-232 to RS-485 Serial Port Converter, DB-9F to DB-9F. 5034-202 RS-485 to 3-wire Cable Converter, DB-9M to 3 x 12AWG RS-485 Cable, 8 ft. This package includes Windows® Configuration Software, an RS-232-to-485 Serial Port Converter, and an RS-485 Signal Cable. These components provide everything you need to set up a Series 900 I/O module from your desktop PC before installing it on the network. RS-232/485 Converter (non-isolated) RS-485 to 3-wire 5034-214 Network Power ■ Ordering Information Software Interface Package 5034-202 Universal 50W Power Supply PS5R-D24 Universal Power Supply Top View (dimensions in mm) 5 6. -ø 10 Side View (dimensions in mm) 3.8 90 80 .5 ø4 4- The PS5R-D24 is the ideal power source to drive your network. ■ Ordering Information 7.35 Configuration Kit I/O 13 13 13 13 DC ON 35.3 Universal power 85 to 264V AC, 105 to 370V DC 60 75 Input Power Requirement V.ADJ Output 5 24V DC, 2.1A (50W) M3.5 Terminal Screws 6 95 12 Mounting Hardware DIN-Rail Mounting For your convenience, Acromag offers several mounting accessories to simplify your system installation. Our 19” rack-mount kit provides a clean solution for mounting your I/O modules and a power supply. Or you can buy precut DIN rail strips for mounting on any flat surface. ■ Ordering Information 20RM-16-DIN 19" rack-mount kit with DIN rail. DIN RAIL 3.0 DIN RAIL 16.7 DIN rail strip, Type T, 3 inches (75mm) or 16.7 inches (425mm) Dimensions in inches (mm). Amplicon.co.uk Amplicon.com IT and Instrumentation for industry Sales: +44 (0) 1273 570 220 Website: www.amplicon.com Email: [email protected] Datasheet 900MB RS-232 to RS-485 Series 4SCC-TTM Isolated Signal Converter This unit provides an isolated interface between the host PC’s RS-232 port and RS-485 Modbus network devices. Signal conversion is bidirectional with operation that is transparent to all devices. The RS-485 network supports up to 32 devices (including the 4SCC-TTM Converter) across 4000 foot distances. Installation of additional network devices or extending the distance requires the 4SCR-TTM Network Repeater. Specifications Baud Rates Switch-selectable from 300 to 38.4K baud. Duplex Half duplex only. Network Termination Resistors Two terminal blocks and 120 ohm resistors provided to terminate both ends of the RS-485 network. Wiring Connectors Terminal blocks with screw clamps for 14-26AWG. Operating Temperature Range -25 to 60°C (-13 to 140°F). Isolation BusWorks® Modbus I/O Withstands 1500V AC surge for 60 seconds (250V AC or 354V DC continuous). ■ Ordering Information Dimensions in inches (mm). Shipping Weight 3.0 lbs. (1.4 kg) packed. RS-485 to RS-485 4SCR-TTM Isolated Network Repeater This unit isolates and boosts RS-485 signals to extend communication distances or increase the number of devices on the network. Each Repeater permits the addition of a network branch with up to 32 devices (including the 4SCR-TTM) and will transmit RS-485 signals another 4000 feet. Operation is transparent to all devices and no handshaking is required. Two terminal blocks are provided for 120 ohm resistors to terminate both ends of the network branch. 4SCC-TTM-1 Signal Converter, 115V AC (power cord included) 4SCC-TTM-2 Signal Converter, 230V AC (power cord included) 5020-924 Signal Cable, 8ft. long, DB-9 to three wires. Connects PC’s RS-232 port to 4SCC-TTM-x. Specifications Baud Rates Switch-selectable from 300 to 38.4K baud. Duplex Half duplex only. Network Termination Resistors Two terminal blocks and 120 ohm resistors provided to terminate both ends of the RS-485 network. RS-485 Wiring Connectors Terminal blocks with screw clamps for 14-26AWG. Power Wiring Connections Terminal block with screw clamps for 12-18AWG. Operating Temperature Range -25 to 60°C (-13 to 140°F). Isolation Withstands 1500V AC surge for 60 seconds (250V AC or 354V DC continuous). ■ Ordering Information Dimensions in inches (mm). Shipping Weight 3.0 lbs. (1.4 kg) packed. Amplicon.co.uk Amplicon.com 4SCR-TTM-1 Signal Converter, 115V AC power 4SCR-TTM-2 Signal Converter, 230V AC power 40LC-GBW-1 115V AC power cord IT and Instrumentation for industry Sales: +44 (0) 1273 570 220 Website: www.amplicon.com Email: [email protected] Datasheet Modbus I/O System Connection USB-to-RS232 Adapter Model 5034-225 USB-to-RS232 adapter Length: 3.15 in (8.0 cm) Height: 0.80 in (2.03 cm) Width: 1.75 in (4.44 cm) Weight: 1.6 oz (45.36 g) Isolated RS-232/485 Signal Converter RS-232 Acromag Model No. 4SCC-TTM RS-485 Daisy-Chain Topology RS-485 Network: Up to 32 devices, 4000ft. max. Extending the Network Isolated RS-485 Network Repeater Acromag Model No. 4SCR-TTM Network Branch: Additional 32 devices, 4000ft. extension To Network Host RS-485 Amplicon.co.uk Amplicon.com RS-485 IT and Instrumentation for industry Sales: +44 (0) 1273 570 220 Website: www.amplicon.com Email: [email protected]