Honeywell UDC 3300 manual Make sure Lockout in the Tuning Set Up group is set to

Procedure	The procedure for calibrating the Current Proportional Output is listed in
	Table 8-2. Make sure LOCKOUT in the Tuning Set Up group is set to
	NONE. See Section 3 – Configuration.

Table 8-2 Current Proportional Output Calibration Procedure

Step

1

Description

Enter Calibration Mode

Press

SET UP

Action

until you see

Upper Display

CALIB

Lower Display

CURRENT

2

3

4

Calibrate 0 %

Calibrate 100 %

Exit the Calibration Mode

FUNCTION

LOOP 1/2

or

FUNCTION

LOOP 1/2

or

FUNCTION

LOOP 1/2

LOWER

DISPLAY

or

You will see:

Upper Display

a value between 1 and 2048

Lower Display

ZERO VAL

until the desired 0 % output is read on the milliammeter. Use the values shown below depending on the action of your valve.

0 mA	For 0 to 20 mA Direct Action*
20 mA	For 0 to 20 mA Reverse Action
4 mA	For 4 to 20 mA Direct Action
20 mA	For 4 to 20 mA Reverse Action

This stores the 0 % value and you will see:

Upper Display

a value between 1 and 2048

Lower Display

SPAN VAL

until the desired 100 % output is read on the milliammeter. Use the values shown below depending on the action of your valve.

20 mA	For 0 to 20 mA Direct Action
0 mA	For 0 to 20 mA Reverse Action*
20 mA	For 4 to 20 mA Direct Action
4 mA	For 4 to 20 mA Reverse Action

The controller will store the span value.

To exit the calibration mode.

SET UP

*When attempting to achieve 0 mA, always adjust the output to about 0.5 mA, and slowly decrease until the output just goes to zero. Further decrementing will not change the output current (since the circuit cannot produce negative current) but will affect the accuracy of the output by creating a dead zone where no current flows.

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