Installation manual

DC Bus Voltage Does Not Go Up
9-3 Inspecting Trouble and Recovering
DC bus voltage
does not go up.
Wiring correct?
POWER lamp
lights ON?
Setting of
parameters correct?
The unit is defective.
Replace the unit.
YES
YES
YES
Check the following:
• Wiring to main power supply
• Main magnetic contactor
• Protection fuse
The unit is defective.
Replace the unit.
Check the following parameters:
• Unit Selection (F.000)
• DC Bus Voltage Reference
(U.000)
• FWD Current Limit (U.001)
• REV Current Limit (U.002)
NO
NO
NO