Alarms, Trips, and Troubleshooting
W7B ASD Installation & Operation Manual
https://www.toshiba.com/tic/
185
Note: The event that caused the Trip(s) must be corrected or must decrease to less than the threshold
value required to cause the trip to allow for a Reset to be recognized. In the event of multiple active trips,
the trip displayed will remain until all faults are corrected and all trips are cleared.
UV - Control Power
• 3-phase input voltage low.
• Defective control board.
• Excessive load on the power supply.
• Under-voltage/Ridethrough settings require adjustment.
Under Current Fault
• Improper Low-Current detection level setting.
U-Phase OC
• Low impedance at the U lead of the ASD output.
V-Phase OC
• Low impedance at the V lead of the ASD output.
W-Phase OC
• Low impedance at the W lead of the ASD output.
Table 11. (Continued) Trips and Faults.
Fault Screen Display
Possible Causes
Summary of Contents for W7 DN-57442-006
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