Troubleshooting guide

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8.4 Display Contrast Adjustment
Should adjustment of the contrast level of the display become necessary, use the following procedure
while in the normal operating mode.
To increase contrast, press and hold at the same time.
To decrease contrast, press and hold at the same time.
8.5 Changing the Motor Base Frequency
This procedure will not be necessary during normal operation of the MPC controller. In the event that
you need to install a different drive motor, and that motor has a different base frequency (50 Hz vs. 60
Hz) than the original unit, please refer to this procedure. These changes are made at the AC drive
within the MPC enclosure and not at the hand-held unit.
THIS PROCEDURE IS PERFORMED WITH POWER APPLIED TO THE MPC. TAKE ALL NECESSARY
PRECAUTIONS
, KEEP FINGERS AND TOOLS CLEAR OF ENERGIZED CIRCUITS, AND PERFORM THIS
PROCEDURE ONLY IF YOU ARE CERTAIN IT IS REQUIRED
.
1. Open the front cover of the MPC control
2. There are three buttons on the face of the drive, MODE, UP and DOWN.
3. Press the MODE button
4. Scroll UP to display the default password “
001”
5. Press MODE to enter the password
6. Scroll UP to the base frequency parameter which is “27” display will show “
P 27”
7. Press MODE to display the current setting (will be either
50 or 60)
8. Use the UP or DOWN keys to change the setting to the new value (either
50 or 60)
9. Press MODE to store the new value
10. Drive will exit the program mode after it stores the new value
This procedure should be used only if the base frequency of the pump drive motor is changed.