Honeywell UDC3500 - First Current Output Calibration; Table 6-1 Set up Wiring Procedure for the First Current Output; Figure 6-1 Wiring Connections for Calibrating the First Current Output

Output Calibration
296 UDC3500 Universal Digital Controller Product Manual 3/07
6.2 First Current Output Calibration
Introduction
Calibrate the controller so that the output provides the proper amount of current over the
desired range. The controller can provide a current output range of from 0 mA to 21 mA.
The controller is usually calibrated at 4 mA for 0 % of output and 20 mA for 100 % of
output, but it may be calibrated for any other values between 0 mA and 21 mA. It is not
necessary to re-calibrate the controller in order to change from 4 to 20 mA operation over
to 0 to 20 mA operation, a simple configuration change is all that is required. See the CO
RANGE configuration for First Current Output in
Sub-section 3.14 for details.
Equipment Needed
You will need a standard shop type milliammeter, with whatever accuracy is required,
capable of measuring 0 to 20 milliamps.
Calibrator Connections
Refer to Figure 6-1 and wire the controller according to the procedure given in Table 6-1.
Table 6-1 Set Up Wiring Procedure for the First Current 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
5 (+) and 6 (–). See Figure 6-1.
4
Connect a milliammeter across these terminals.
Milliammeter
+
_
+
_
L2/N
L1
4
5
6
7
8
9
Curre nt
Out
p
ut 1
Figure 6-1 Wiring Connections for Calibrating the First Current Output