Transcript
TCAS II
ENDEVCO
(Computer-Controlled Test Cell Amplifier System)
MODEL 68220
Model 68220 • Programmable High Pass, Low-Pass, Band-Pass Filters • Wide Range of Programmable Transducer Sensitivities and Full Scale Units • Level Detection and Alarms • Self-Test and Self-Calibration by Computer Control • Inputs for a Variety of Transducer Types Not actual size
DESCRIPTION
The ENDEVCO® Model 68220-XX Computer-Controlled Test Cell Amplifier System (TCAS II™) contains one to twelve Model 6647 Vibration Signal Conditioner Circuit Boards installed in a Model 4970 19-inch rack. All the channels are remotely controlled by the IEEE 488 bus via the Model 26752-9 microprocessor based digital controller board, which contains an internal oscillator with complete self-test and internal calibration features. Each model 6647 analog channel can be set independently to accept single-ended piezoelectric (SEPE), differential PE, differential velocity, single-ended remote charge convertor (RCC), or ISOTRON® transducer inputs. Each 6647 channel provides several outputs.The broadband output is an analog representation of the input and is conditioned to provide a constant output sensitivity regardless of the operational mode and full scale range.The AC and DC outputs provide programmable 1-10 V scaled outputs selected for acceleration, velocity, or displacement with low pass, high pass, band pass, external, or filter bypass. The 6647 compares the signal level with programmed set points for tripping two independent TTL voltage alarm outputs. A window detector ouput is provided to toggle a TTL voltage when the threshold is exceeded for detecting transient events.The DC output is also multiplexed to an 8-bit A to D convertor to provide a proportional rms data via the GPIB interface.
Broadband Output Cal
To External Filter Charge Amp.
+
From External Filter
P.E.
Unfiltered
Internal Filter + Velocity Coil
Velocity
Displacement
Voltage Amp
Output Gain Stage
ISOTRON
ISOTRON Conditioner
APPLIES TO CALIFORNIA FACILITY
AC DC
ENDEVCO
TCAS II
MODEL 68220
SPECIFICATIONS INPUTS PIEZOELECTRIC INPUT Type Maximum Input Charge Overload Recovery Time Source Resistance Source Capacitance Maximum Common Mode Charge Minimum Common Mode Peak Overload Detection
VELOCITY TRANSDUCER INPUT Impedance ISOTRON INPUT convertor or integral electronic transducers Constant Current Excitation Supply Compliance Voltage CALIBRATION INPUT (EXTERNAL) Input Type Input Impedance Maximum Input Voltage
Differential or single-ended. In single-ended operation low side is tied to signal common. 3000 pC for 1 ≤ Sensitivity ≤ 11. 30 000 pC for 11 < Sensitivity ≤ 110. Negligible for a 50 µ sec. square pulse with amplitudes higher than the maximum input charge. 10 M Ω to meet all specifications, 100 kΩ absolute minimum 20 000 pF maximum to meet all specifications 3000 pC maximum for sensitivities ≤ 11 pC/g 30 000 pC maximum for sensitivities > 11 pC/g 35 dB from 5 to 29 Hz, 55 dB from 30 to 299 Hz The vibration system monitors the input circuitry for inputs >11V pk. It also monitors input to Internal or External filter for values > 1.1V pk. If either level is exceeded SRQ is generated, warning controller of overrange condition. Differential input compatible with velocity transducers 100 k Ω ±5% Single-ended compatible with constant current systems using 2-wire remote charge 6 mA ±20% 21 V maximum. This voltage represents the DC plus AC components. Must be single-ended with sinusoidal signal 100 kΩ minimum 7.07 V pk
OUTPUTS: All analog outputs are protected against short circuit to ground. AC OUTPUT This output is analog proportional to instantaneous input. Full Scale 1 V to 10 V pk Maximum Linear Output 10 V pk maximum Output Load 10 kΩ minimum 2500 pF maximum Short Circuit Protection Output will withstand continuous short circuit without damage. DC OUTPUT This output is proportional to the true rms value of the input scaled to read peak. Full Scale 1 V to 10 Vdc Output Current 10 mA maximum BROADBAND OUTPUT This output is of constant sensitivity and is proportional to the vibration input signal regardless of the operational mode (A,V,D) Sensitivity Velocity input 50 mV/ips 10 Hz to 5 kHz Other inputs 50 mV/unit 5 Hz to 30 kHz Maximum Linear Output Other inputs 10 V pk Velocity input 10 V pk-pk Output Current 2 mA maximum STATUS ALARM OUTPUT This TTL voltage level output when “H” indicates proper operation, when “L” indicates that a relay control arm is active in any of the channels. RELAY CONTROL OUTPUTS These two TTL output relay controls may be programmed to be normally closed or normally open, latching or non-latching. They are triggered when the programmed vibration level is reached. Voltage Output Levels L = 0.5 Vdc maximum H = 2.4 Vdc minimum Current Output Levels H = 1 mA L = 1.7 mA Relay Delay 0-9 seconds, programmable WINDOW DETECTOR Threshold Adjustment Range 0 to 100% of full scale range (ccw to cw) Response Time 1.3 µs maximum Voltage Output Untripped 5 Vdc TTL Voltage Output Tripped 0 Vdc TTL
TCAS II
ENDEVCO
MODEL 68220
SPECIFICATIONS TRANSFER CHARACTERISTICS ACCURACY
Acceleration Input/Acceleration Output AC output DC output B.B. output Acceleration Input/Velocity Output AC output DC output Acceleration Input/Displacement Output AC output DC output Velocity Input/Velocity Output AC output DC output B.B. output Velocity Input/Displacement Output AC output DC output IEEE 488 BUS DATA ACCURACY Acceleration Input/Acceleration Output Acceleration Input/Velocity Output Acceleration Input/Displacement Output Velocity Input/Displacement Output FREQUENCY RESPONSE
All accuracy specifications are for the following conditions unless otherwise indicated: After 5 minute warmup at ambient room temperature, F.S. output voltage set at 10 V peak, signal frequency of 100 Hz. All Acceleration Input accuracy specifications also apply to Isotron or RCC mode of operation. ±1.5% of nominal ±1.5% of nominal ±1.0% of nominal ±2.0% of nominal ±2.0% of nominal ±2.5% of nominal ±2.5% of nominal ±1.5% of nominal ±1.5% of nominal ±1.0% of nominal ±2.0% of nominal ±2.0% of nominal ±2.5% of nominal ±3.0% of nominal ±3.5% of nominal ±3.0% of nominal Flat within its bandwidth. The gain at the lower and upper cutoff frequency is 5% lower than the gain at 100 Hz.
Acceleration Input/Acceleration Output Lower cutoff frequency 2.2 Hz maximum Upper cutoff frequency 50 kHz minimum Velocity Input/Velocity Output Lower cutoff frequency 1.5 Hz maximum Upper cutoff frequency 50 kHz minimum PROGRAMMABLE FILTER CHARACTERISTICS Filter Type Low pass filter cutoff frequency range Four pole filter f-5% Six pole filter f-5% High pass filter cutoof frequency range Four pole filter f-5% Six pole filter f-5% Bandpass Filter EXTERNAL FILTER Maximum Input Voltage Input Impedance Output Voltage Output Current OPERATIONAL STATES OPERATING MODES SELF -TEST
SELF-CALIBRATE
LISTEN TALK
The 4 or 6 pole low pass, high pass, and band pass frequency cutoffs are computer selectable. 28 Hz to 6057 Hz 28 Hz to 6645 Hz 15 Hz to 580 Hz 9 Hz to 528 Hz The band pass filter is a combination of low pass and high pass filters. 1 V pk F.S. 100 kΩ minimum 1 V pk F.S. 1 mA maximum
The vibration amplifier has five major states of operation; self-test, internalcalibrate, external calibrate, listener and talker. In this operational state the vibration amplifier exercises selected analog channels and associated digital controller hardware. Also, input cable and transducer integrity is checked by inserting a voltage in the transducer return line. In this mode of operation the vibration amplifier introduces a 100 Hz signal at the input stages of selected channels and adjusts its gain stages according to programmed settings to obtain an accuracy specified in Section 2.3.1. In this state of operation, the vibration amplifier accepts the parameters described in Section 1.0 for selected channels. In this state of operation, the system transmits two types of information for selected analog channels.
ENDEVCO
TCAS II
MODEL 68220
SPECIFICATIONS
ENVIRONMENTAL TEMPERATURE HUMIDITY
Operating 41°F to 125°F (5°C to 50°C) Storage -40°F to 175°F (-40°C to 85°C) 90% R.H. Maximum
POWER VOLTAGE INPUT (4970 Rack)
100/120/220/240 VAC ± 10%, 48 Hz to 63 Hz
PHYSICAL MODEL 6647 BOARD Dimensions Weight Connector Input Output MODEL 4970 RACK FOR 68220 Dimensions Weight Finish ACCESSORIES EW599 EJ724 EJ725 35901 IM68220
6.88" h x 1.2" w x 18.2" d (17.5cm x 3cm x 46.4cm) 2.5 lb (1.1 Kg) Broad band velocity output “D-Type” 9 pin connector Single-ended PE input 10-32 microdot 5-50 series “D-Type” 15 pin connector 10.47" h x 19" w x 18" d (26.6cm x 48.3cm x 45.6cm) 45 lb (18.2 Kg) Grey enamel front panel with black insert handle and brushed aluminum case
POWER CORD CONNECTOR KIT (9 PIN INPUT) [1] CONNECTOR KIT (15 PIN OUTPUT) [1] TCAS II/TFAS APPLICATION SOFTWARE (DOS) INSTRUCTION MANUAL
OPTIONAL/SPARES 26752-9 6647 6917M81-YYY 26883 26885 31851
Digital Controller Card Signal Conditioner Card Analog Cable Assy (Input) [2] Extender Card Assy (Analog) Extender Card Assy (Digital) TFAS/TCAS Application Software
[1] 1 Mating connector kit is supplied for every channel of 6647 Vibration Signal Conditioners. [2] -YYY denotes cable length in inches.
ORDERING INFORMATION: 68220-XX Rack AC Power Input (4970) 68220V = 68220 = TCAS II Cards XX = 1 to 12
Model 4970 rack 220 volts 120 volts (standard) Model 6647 channels installed for 4970 rack
Notes Maintain high levels of precision and accuracy using Endevco's factory calibration services. Call Endevco’s inside sales force at 800-982-6732 for recommended intervals, pricing and turn-around time for these services as well as for quotations on our standard products.
Continued product improvement necessitates that Endevco reserve the right to modify these specifications without notice. Endevco maintains a program of constant surveillance over all products to ensure a high level of reliability. This program includes attention to reliability factors during product design, the support of stringent Quality Control requirements, and compulsory corrective action procedures. These measures, together with conservative specifications have made the name Endevco synonymous with reliability. ENDEVCO CORPORATION, 30700 RANCHO VIEJO ROAD, SAN JUAN CAPISTRANO, CA 92675 USA (800) 982-6732 (949) 493-8181 fax (949) 661-7231 www.endevco.com Email:
[email protected] 1100
