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Incoming AC Voltage
Unbalance Output Inspection
The voltage must be 160-175VDC in all three readings. If any of the voltage readings is 0V or 330V, then this is a sign
of an unbalanced output from the vector drive.
Copyright 2017 by Haas Automation, Inc. No unauthorized reproduction | Last Published On August 21, 2017
Corrective Action:
Measure the incoming voltage to the machine. Make sure that
the incoming voltage is within the range of the transformer's tap.
Move the lines to the correct tap if needed.
Corrective Action: Disconnect the motor cables at the vector
drive. Push [POWER ON]. Push [RESET] to clear any alarms.
Use a multimeter to measure the DC voltage across the following
terminals on the vector drive (see the illustration):
3 and 9
3 and 10
3 and 11
7/7
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