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Alarms
Table 10
lists the alarm codes that may be
displayed during operation of the ASD. Each alarm
code listed is accompanied by a description and a
possible cause. In the event that the source of the
malfunction cannot be determined, contact the TIC
Customer Support Center for additional information
EOI
Function
Display
* Reset ignored if active.
CM1
Comm1 Error
CM2
Comm2 Error
EMG
Emergency
Off
MOFF
Main
Under-Voltage
OC
Over-Current
*OH
Over-Heat
OJ
Timer
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W7B ASD Installation & Operation Manual
on the condition and for an appropriate course of
action.
The active Alarm is displayed on the Frequency
Command screen. Multiple active alarms are
displayed one at a time and are scrolled at one-
second intervals.
Table 10. ASD Alarms.
Description
Internal communications
error.
External communications
error.
Output signal from the
ASD is terminated and a
brake may be applied if so
configured.
Under-voltage condition at
the 3-phase AC input to
the ASD.
ASD output current greater
than the parameter
F601
setting.
ASD ambient temperature
excessive.
Run-time counter
exceeded.
Alarms, Trips, and Troubleshooting
Possible Causes
• Improperly programmed ASD.
• Improper communications settings.
• Improperly connected cables.
• Stop-Reset pressed twice on the EOI.
• EOFF command received remotely.
• ASD reset required.
• Low 3-phase input voltage.
• Defective IGBT (U, V, or W).
• ASD output to the motor is connected
incorrectly. Disconnect the motor and retry.
• ASD output phase-to-phase short.
• The ASD is starting into a spinning motor.
• Motor/machine jammed.
• Mechanical brake engaged while the ASD is
starting or while running.
• Accel/Decel time is too short.
• Torque Boost setting is too high.
• Load fluctuations.
• ASD operating at an elevated temperature.
• ASD is operating at an elevated temperature.
• ASD is too close to heat-generating
equipment.
• Cooling fan vent is obstructed (see
the ASD on pg.
14).
• Cooling fan is inoperative.
• Internal thermistor is disconnected.
• Type Reset required; select Clear run timer.
Mounting
179
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