Franklin Electric SUBDRIVE CONNECT Manual Del Usuario página 52

MAINTENANCE
Troubleshooting
Codes Fault
F F 4 4 4 4 Duplex
Alternator
Unexpected
Comm
F F 4 4 5 5 Duplex
Alternator
Demand
Fault
Power down, disconnect leads to the motor and power up the SubDrive:
• If the SubDrive does not give an "open phase" fault (F5), then there is a problem with the SubDrive.
• Connect the SubDrive to a dry motor. If the motor goes through DC test and gives "underload" fault
(F1), the SubDrive is working properly.
52
Possible Causes
• Duplex Alternator cable is installed but
Duplex Alternator function is only con-
figured on one drive
• Drives are incorrectly configured
• Both drives are running and unable to
satisfy the Primary Setpoint pressure
Corrective Action
• Complete Duplex Alternator configuration on both
drives
• Ensure both drives are configured properly. One
drive must be configured as Pump 1, the other drive
must be configured as Pump 2, and the Switching
Interval must match.
• Inspect each system for proper pump operation