Maintenance Controller Calibration

Thermocouple Input

 

Current Input mA

+

4 to 20

+

 

*

T/C, mV, V

mA

-

Source

-

 

Ground Terminal

Ground Terminal

*

A 250 ohm resistor is required for

 

the input range.

mV, V Inputs

RTD Input (3 wires)

 

+

 

+

mV or V

 

Source

 

-

-

 

 

 

RTD

Ground Terminal

 

 

 

Ground Terminal

+12 - 11

RTD 10

1

+9 - 8

RTD 7

+6 - 5

RTD 4

+3 - 2

RTD 1

Channel 4

Channel 3

Channel 2

Channel 1

Figure 33 AI module terminal block

Other AI module calibration selections

Additional calibration selections allow you to perform other AI module calibration procedures:

CALIBRATE CJ TEMP – for calibrating the two Cold Junction (CJ) references on the AI module

COPY CALIBRATION – for copying calibration values from one AI module channel to another

RESTORE AI FACTORY CAL – to restore AI module channels to their factory calibration

RESTORE CJ FACTORY CAL – to restore CJ reference to their factory

AO module calibration values

Two calibration selections are accessible under the CALIBRATE AO menu selection

1.CALIBRATE AO CHANNEL – to calibrate the zero offset and span values of the AO module channels to user-defined values.

2.RESTORE AO FACTORY CAL – to restore factory calibrated to an AO module channel.

The AO module contains a wire jumper (labeled ST1) on the PWA. Cutting this jumper will prevent any changes to initial calibration values of the module and prevent any further field calibration. See Figure 34 for the location of the jumper. More details on module calibration are given in the UMC800 Operator Interface User Guide and the UMC800 User Utility User’s Guide.

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UMC800 Controller Installation and User Guide

Release F

 

 

4/01

Page 76
Image 76
Honeywell UMC800 manual AO module calibration values, Maintenance Controller Calibration Thermocouple Input