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Output Calibration
4/07 UDC2500 Universal Digital Controller Product Manual 153
Procedure
The procedure for calibrating the Current Output is listed in Table 6-2. The numeric
codes are also listed. Make sure LOCK in the Tuning Set Up group is set to NONE.
(See Subsection 3.4 – Tuning Set Up Group.)
Table 6-2 Current Output Calibration Procedure
(Numeric Code 30000)
Step Operation Press Result
1
Enter Calibration
Mode
SetupSetup
until you see
Upper Display = CAL ( - - - - )
Lower Display = CURENT (30000)
2
Calibrate 0 %
FunctionFunctionFunction
You will see:
Upper Display = A Value
Lower Display = ZROVAL (30001)
or
Until the desired 0 % output is read on the milliammeter,
use the values shown below depending on the action of
your controller. Normally, this will be the setting that
produces 4 mA.
3
Calibrate 100 %
FunctionFunctionFunction
This stores the 0 % value and
you will see:
Upper Display = A Value
Lower Display = SPNVAL (30002)
or
Until the desired 100 % output is read on the milliammeter,
use the values shown below depending on the action of
your controller. Normally, this will be the setting that
produces 20 mA.
4
FunctionFunctionFunction
The controller stores the span value.
Exit the
Calibration Mode
Lower
Display
Lower
Display
Lower
Display
To exit the calibration mode.