Honeywell UDC2300 - 9.3 Auxiliary Output Calibration

Troubleshooting/Service
98 UDC2300 Controller Product Manual 12/00
9.3 Auxiliary Output Calibration
Introduction
Calibrate the controller so that the auxiliary output provides the proper amount of current
over the desired range. The controller can provide an auxiliary current output range of
from 0 mA to 20 mA and can be calibrated at 4 mA for 0 % of output and 20 mA for
100 % of output or any other values between 0 mA and 21 mA.
Equipment Needed
You will need a calibrating device with whatever accuracy is required, capable of
measuring 0 to 20 mA.
Calibrator Connections
Refer to Figure 9-2 and wire the controller according to the procedure given in Table 9-3.
Table 9-3 Set Up Wiring Procedure for Auxiliary Output
Step Action
1
Apply power and allow the controller to warm up 30 minutes before you calibrate.
2 Set LOCK in the Tuning Set Up group to NONE.
3
Tag and disconnect the field wiring, at the rear of the controller, from terminals 13 (+)
and 14 (–). See Figure 9-2.
4
Connect a milliammeter across these terminals.
24881
13
14
Milliammeter
+
_
+
_
Figure 9-2 Wiring Connections for Calibrating Auxiliary Output