Alarms - Toshiba P9 ASD Quick Start Manual

Alarms

Table 5 lists the alarm codes that may be displayed during operation of the P9 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.
LED LCD
Screen Screen
AbFL
Low Suction/No Flow
Cut Off
CM1
Comm1 Error
CM2
Comm2 Error
E
Emergency Off
MOFF
Main Under-Voltage
OC
Over-Current
P9 ASD Quick Start Guide
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Table 5. P9 ASD Alarms.
Description
Running ASD producing no
flow.
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
F601 setting.
Possible Causes/Troubleshooting
• Loss of suction pressure or closed pump output valve.
• Activated discrete input terminal set to Low Suction/No
Flow Protection.
• ASD Upper-Limit Frequency (F012) run-time is equal
to the F484 time setting.
• Improperly programmed ASD.
• Improper communications settings.
• Improperly connected cables.
• Stop|Reset pressed twice at the EOI.
• EOFF command received remotely.
• ASD reset required.
• Low 3-phase commercial voltage.
• PO-to-PA jumper not secured or missing.
• Typeform error.
• Loss of externally-supplied control power.
• 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.
• Disconnected/damaged cable while operating in the PG
Feedback Vector Control mode.
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