Mounting and Wiring

Signal Wiring

Analog inputs (module ID 1)

A universal Analog Input module accepts a variety of input signals from field devices as summarized in Table 9. Figure 13 illustrates the terminal block connections for the various inputs. See Specifications section for more details on all I/O module specifications. One AI module can be configured to accept multiple input types.

Table 9 Universal analog input module specifications

Specification

Description

Input Types

Number of Inputs

mV, V, mA, T/C, RTD, and Ohms

4 per module, up to 16 modules per controller (64 inputs)

Signal Source

Thermocouple with cold junction compensation, for operation between 32 °F to

 

176 °F (0 °C to 80 °C)

 

Line resistance up to 1000 ohms, T/C, mV, mA, V

 

RTD Pt 100 3-wire connections, 40 ohms balanced max.

 

 

Input Impedance

10 Megohms for T/C, mV inputs,

 

> 1 Megohms for volt inputs

 

 

Field Wiring

+12

-

11

Channel 4

Thermocouple Input

 

Current Input mA

RTD

10

 

 

 

+

 

+

 

1

 

4 to 20

 

 

 

*

 

 

T/C, mV, V

mA

 

 

 

+

9

 

-

Source

-

 

 

-

8

Channel 3

 

 

 

RTD

7

 

Ground Terminal

Ground Terminal

+

6

 

 

* A 250 ohm resistor is required for

 

 

the input range.

 

 

 

 

-

5

Channel 2

mV, V Inputs

 

 

RTD

4

 

RTD Input (3 wires)

 

 

 

 

 

+

 

+

 

 

 

mV or V

 

+

3

 

Source

 

-

 

-

 

-

2

Channel 1

 

RTD

 

RTD

1

 

Ground Terminal

 

 

 

 

 

 

Ground Terminal

Figure 13 AI module terminal block connections

Release F

UMC800 Controller Installation and User Guide

25

4/01

 

 

Page 33
Image 33
Honeywell UMC800 manual Analog inputs module ID, Universal analog input module specifications, Specification Description