Transcript
Product Technical Datasheet
990 Series Communications Converters (Issue 2)
990 Series – Serial Communications Converters/ Interfaces
Description A compact DIN rail mounted industrial communications converter / interface device. Generic design supporting the most common converter & line driver variants, including; RS232, RS422, RS485. The unit features 2 isolated serial communications circuits with the benefit of a microprocessor controlled timing circuit. Converter options of RS232 to RS422, RS232 to RS485 (2-wire)
Key Features
Compact modular design, Robust, rugged casing. DIN rail mounting. >1000vdc/µs CMR / Isolation between serial circuits. Configurable serial interface supports RS232, RS422 and RS485 with selectable baud rate.
Physical Layout & Dimensions (Dimensions in mm,)
Installation Datasheets - Communications Products DST09900102 25/09/15
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Product Technical Datasheet
990 Series Communications Converters (Issue 2) Technical Specifications Electrical
Rising clamp, 2.5mm2 cable capacity
Terminals
Supply Voltage
24 Vdc
Consumption
Environmental
1w EMC RF Emissions
Isolation Power to Logic Comms CCT A-B
1000 Vdc/us 1000 Vdc/us RF Immunity
Communications Circuit A
RS422/485
Circuit B
RS232/422/485
Handshaking
All Models
Tx / Rx Control
All Models
Loop Length
RS485/422 <= 32 Units <=100 Units
Serial Protocol
Weight
EN50082-2
Ambient Limits
Storage Operational Humidity
-20 to +70 °C -10 to 50 °C 20 to 90% RH (non condensing)
ORDER CODES
µProcessor
4 km 1 km
991
Serial Converter. RS232 to RS485 configured as 2 wire half duplex.
992
Serial Converter. RS232 to RS485 configured as 4 wire full duplex.
993
Line Driver. RS485 2 wire to RS485 2 wire. Fixed Baud Rate.
994
Line Driver. RS485 4 wire to RS485 4 wire. Fixed Baud Rate.
Not Specific
17.8 x 89.7 x 62.2mm
60 g
Casing
Flame Retardant UL94V0 Polycarbonate
Fixing
Symmetrical DIN Rail 35mm (EN50022/BS5584)
Protection
Radiated Conducted
EN60950
Mechanical Dimensions (w x h x d)
EN50081-1
Safety
None 1k2, 2k4, 4k8, 9k6, 14k4 19k2, 38k4, 57k6, 76k8
Baud Rates
Radiated Conducted
*Notes 1. For reliable communications at lower baud rates (2400) using Modbus it is recommended that short messages are not used. (ie: block reads should be at least 2 registers, preferably more)
IP20
Field Electronics Ltd reserve the right to update this publication periodically and make changes to product specifications without obligation to notify any person of such revision or changes. Field Electronics Limited Unit 75 Mackley Industrial Estate, Henfield Road, Small Dole. West Sussex. BN5 9XR.ENGLAND. Tel. +44(0)1403 713772 Fax. +44(0)1403 713773 Web. www.fieldelectronics.com Email.
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