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Problem solving
SPX ADVANCED APPLICATION MANUAL
SVCH0203—October 2017 www.eaton.com
F75 Drive synch follower
When using the normal master follower function this fault
code is given if one or more follower drives trip to fault. This
fault is visible also when fault is in master drive. See also
what other faults may be active in master drive.
Possible cause:
1.
Fault in follower drive or in Master drive
Correcting measures:
•
Identify original fault and problem
F80 Output contactor interlock
•
Digital Input for Output contactor must close in less than
250ms after run
•
Check Programming of Digital inputs and ensure proper
wiring to contactor
F81 External fault 2
Possible cause:
1.
Digital input fault
Correcting measures:
•
Remove fault situation from external device
F82 Over load
User defined over load limits has been exceeded.
See functional description from Motor Protection chapter.
F85 Cold weather
Cold Weather mode is in operation if Alarm is present,
If faulted the timeout time has been exceeded.
A90 Current limit
Current limit is limiting the output of the drive after ensuring
the proper current limit setting, check motor and load.
A91 UndervoltReg
Drive is attempting to control low DC bus voltage by reducing
motor speed.
A92 OverVoltReg
Drive is attempting to regulate DC bus voltage by extending
decal times or increasing motor speed.
A93 TorqueReg
Motor torque is being limited to the torque limit settings