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Alarms
Table 7
lists the alarm codes that may be displayed during operation of the GX9 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 your TIC Sales Representative for further information on the condition and
for an appropriate course of action.
The Alarms are listed in the top-down order that they are checked for activation. Only the first to be
detected will be displayed on the Frequency Command screen.
Note:
Some User Notification conditions and Alarms may be annunciated via a discrete
output terminal setting. See the GX9 ASD Installation & Operation Manual for a listing
of the possible system conditions that may be associated with an output terminal.
LED
LCD
Screen
Screen
CM1
Communication Error
(scan error)
Communication alarm
CM2
2 (RS232/RS485/TTL
error)
EF
Earth Fault
EFU
DC Fuse Open
ERR1
Point Setting Error
LOd
PID Low Output
Disable
MOFF
Main Power Under-
Voltage
OC
Over-Current
64
Table 7. GX9 ASD Alarms.
Description
Internal communications error.
External communications error.
Active ground fault.
Incorrect current reading at DC
fuse circuit.
Incorrect setup at an analog
input (e.g., VI/II, RR, etc.).
LOD function enabled and the
output frequency is less than the
F732 setting.
Under-voltage condition at the
3-phase AC input to the ASD.
ASD output current greater than
F601 setting.
Possible Causes/
Troubleshooting
• Improperly programmed ASD.
• Improper communications settings.
• Improperly connected cables.
• Ground fault at the motor.
• Ground fault at the output of the ASD.
• Current leakage to Earth Ground.
• Open circuit at DC bus circuit.
• Gain and bias settings for an analog input are
either the same or too close to each other (e.g.,
F201 and F203 are equal).
• Disable the LOD function at F731 or increase the
Low Output Disable Start Level at F732.
• Low 3-phase commercial voltage.
• Defective IGBT (U, V, or W).
• ASD output to the motor is connected incorrectly.
• 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.
• Voltage Boost setting is too high.
• Load fluctuations.
• ASD operating at an elevated temperature.
GX9 ASD Quick Start Guide
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