CONTREX MLP-Drive - Manual (Page 38)

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ANALOG INPUT CALIBRATION
The analog input is factory calibrated for zero and span levels at 0 - 10 VDC. If it is
necessary to field calibrate the analog input, follow these procedures.
Zero Adjust
1) Enter CP-85 (Analog Input Zero) by entering the following on the keypad:
Press "Code Select"
Enter "85" (Analog Input Zero)
Press "Enter"
2) Place zero volts (short) on the analog input (J5 pins 18, 19).
3) Press the "." (decimal point) key. The display should now read between 0.0
and 1.0. This step zero adjusts the analog input.
Span Adjust
1) Enter CP-86 (Analog Input Span) by entering the following on the keypad:
Press "Code Select"
Enter "86" (Analog Input Span)
Press "Enter"
2) Place 10.0 VDC on the analog input (J5 pins 18, 19).
3) Press the "." (decimal point) key. The display should now display a value from
90.0 to 100.0 for a 10 VDC input. This step span adjusts the analog input.