Honeywell UDC 3300 manual Preliminary Information, Calibration steps, Disconnect the field wiring

7.3 Preliminary Information

Calibration steps Use the following steps when calibrating an input.

Step

1

2

3

4

Action

Find the minimum and maximum range values for your PV input range from Table 7-1.

Disconnect the field wiring and find out what equipment you will need to calibrate. DO NOT remove external resistor assemblies (if present).

Wire the calibrating device to your controller according to the Set Up wiring instructions for your particular input.

Follow the calibration procedure given for Input #1, Input #2, or Input #3, after the controller has warmed up for a minimum of 15 minutes.

Disconnect the field wiring

Depending on which input (#1, #2, or #3) you are going to calibrate, tag and disconnect any field wiring connected to the input terminals on the rear of the controller.

Figure 7-1 shows the wiring terminal designations for Input #1, Input #2, and Input #3.

Figure 7-1 Inputs #1, #2, and #3 Wiring Terminals

Input 2 connections

Input 1 connections

R

+

–

R

+

–

L1
L2/N	+
22
23	–
24
25
26
27

Input 3 connections

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