Input Calibration

5.5 Input 1 Calibration Procedure

Preliminary Steps

Apply power and allow the controller to warm up for 30 minutes before you calibrate.

Please read Subsection 5.4 Input 1 Set Up Wiring before beginning the procedure.

Make sure you have LOCK set to NONE. See Subsection 3.4 - Tuning Set Up Group.

See Table 5-1for Voltage vs. Resistance equivalents or 0 % and 100 % range values.

CAUTION

For linear inputs, avoid step changes in inputs. Vary smoothly from initial value to final 100 % value.

Procedure

The calibration procedure for Input #1 is listed in Table 5-10.The numeric codes are also listed.

Table 5-10 Input 1 Calibration Procedure (Numeric Code 10000)

Step

Operation

Press

Result

1

Enter Calibration

Setup

Upper Display = CAL ( - - - - )

 

Mode

 

Lower Display = INPUT1 (10000)

 

 

 

 

until you see

Function

You will see:

Upper Display = DIS ( 0 )

Lower Display = CALIN1 (10001)

The calibration sequence is enabled and you will see:

Upper Display = BEGN ( 1 )

Lower Display = CALIN1 (10001)

2Calibrate 0 %

Function

At the completion of the sequence, the selection automatically reverts to disable.

You will see:

Upper Display = APLY ( 2 )

Lower Display = IN1ZRO (10002)

Adjust your calibration device to an output signal equal to the 0 % range value for your particular input sensor. See Table 5-1for Voltage, Degrees, or Resistance equivalents for 0 % range values.

Wait 15 seconds, then go to the next step.

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UDC2500 Universal Digital Controller Product Manual

4/07

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Honeywell UDC2500 manual Preliminary Steps, Input 1 Calibration Procedure Numeric Code