Honeywell UDC 3300 manual Current Proportional Output Calibration, Between 0 mA and 21 mA

8.2 Current Proportional Output Calibration

Introduction	Calibrate the controller so that the output provides the proper amount of
	current over the desired range. The controller can provide an output
	current range of from 0 to 21 milliamperes 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

Calibrator connections

You will need a standard shop type milliammeter, with whatever accuracy is required, capable of measuring 0 to 20 milliamps.

Referring to Figure 8-1, wire the controller according to the procedure given in Table 8-1.

Table 8-1 Set Up Wiring Procedure Current Proportional Output

Step

1

2

3

Action

Apply power and allow the controller to warm up 15 minutes before you calibrate.

Tag and disconnect the field wiring, at the rear of the controller, from terminals 2 (+) and 3 (–). See Figure 8-1.

Connect a milliammeter across these terminals.

Figure 8-1 Wiring Connections for Calibrating Current Proportional Output

Milliammeter

+–

	10
L1	11
L2/N	12
22	13
23	14
24	15
25	16
26	17
27

1

2

3

4

5

6

7

8 9

+

–

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234 UDC 3300 Controller Product Manual 4/00