WX9 ASD Installation and Operation Manual
191
*OP
*Over-Voltage
DC bus voltage exceeds
specifications.
• ASD attempting to start into a spinning motor after a
momentary power loss.
• Incoming commercial power is above the specified range.
• Decel time is too short.
• Voltage spikes at the three-phase input; install inductive filter.
• Over-Voltage Stall feature is turned off.
• System is regenerating.
• Load instability.
• Disable the Ridethrough function (
).
OT
Over-Torque
Torque requirement in
excess of the setting of
for a time
longer than the setting of
• ASD is not correctly matched to the application.
•
setting is too low.
• Obstructed load.
*POFF
*Control Power
Under-Voltage
Under-voltage condition at
the 5, 15, or the 24 VDC
supply.
• Defective control board.
• Excessive load on power supply.
• Low input voltage.
rtry
Retry
After a trip has occurred,
for a number of user-set
times, an automatic
system restart is attempted
for a qualified trip.
• The
Retry
function is active.
PtSt
Reference Point
Two speed-reference
frequency setpoint values
are too close to each other.
• Two speed reference frequency setpoints are too close to each
other (increase the difference).
UC
Under-Current
With the
Low-Current
Trip
(
) parameter
enabled, the output current
of the ASD is below the
level defined at
and
remains there for a time
longer than the setting of
• Output current too low.
*
Reset ignored if active.
Table 13. WX9 ASD Alarms. (Continued)
LED Display
LCD Display
Description
Possible Causes/Troubleshooting
Summary of Contents for WX9 ASD
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