Hardware reference guide

DIO
35013379 02 October 2007 259
Specifications The following specifications are for the Modbus Plus CRA21110 and CRA21210 AC
powered single and dual channel DIO modules.
Specifications
Input Requirements
Input Voltage 85 ... 276 Vac
Input Frequency 47 ... 63 Hz
Input Voltage Total Harmonic
Distortion
Less than 10% of the fundamental rms value
Input Current 0.4 A @ 115 Vac. 0.2 A @ 230 Vac
Inrush Current 10 A @ 115 Vac. 20 A @ 230 Vac
VA Rating 50 VA
Input Power Interruption 1/2 cycle at full load and minimum rated line voltage /
frequency. No less than 1 second between
interruptions.
Fusing (external) 1.5 A (Part #043502515 or equivalent)
Operating Mode Standalone or not powered (see Power and Grounding
Guidelines, p. 775).
Output to Bus
Voltage 5.1 Vdc
Current 3 A
Minimum Load 0 A
Protection Over Current, Over Voltage
Communication
Modbus Plus 1 port (single cable); 2 ports (dual cable)
General
Specifications I/O Type: Quantum
Modules/Drop: Depends on bus current loading
and word count
Words: 30 In / 32 Out. (Two additional input
words are reserved for drop status.)
Diagnostics Power Up Runtime
RAM Data/Address
Executive Checksum
Field Wiring Connector 7 point terminal strip (Part # 043506326)
Internal Power Dissipation 2.0 V + 3.0 V x I
BUS
= Watts (where IBUS is in Amperes)
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123 www.barr-thorp.com