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Release E UMC800 Controller Installation and User Guide 93
4/01
Specifications
Introduction
The following tables contain electrical, physical, safety and performance specifications for the UMC800
controller.
Controller Design
Parameter Description
Controller
CPU with two serial communication ports,* power supply, and backplane assembly.
Capable of supporting up to 16 input /output modules.
*CPU option provides additional RS 485 communications with Modbus RTU protocol.
I/O Module Configuration
Component Parameter Description
Input Types
mV, V, mA, T/C, RTD, Ohms
Universal Analog Inputs
(Module ID 1)
Number of Inputs
4 per module, up to 16 modules per controller (64 inputs)
Signal Source Thermocouple with cold junction compensation
Line resistance up to 1000 ohms, T/C, mV, mA, V
RTD Pt 100 ohms, 3-wire connections, 40 ohms balanced
maximum
Input Impedance 10 megohms for T/C and mV inputs; >1 megohm for volt
inputs
Input Isolation
400 Vdc point-to-point
3.75K Vac RMS A/D converter to logic
Stray Rejection
Series mode >60 dB. Common mode at 120 Vac >130 dB.
Burnout
T/C, mV, V (except following ranges) configurable to
upscale, downscale, or none.
Volt: –500 mV to 500 mV; –1 V to 1 V; –2 V to 2 V; –5 V to
5 V; 0 V to 10 V; –10 V to 10 V; inherent to zero volt
RTD: Inherent upscale
mA: Inherent downscale
T/C Break Detection
Via current pulse