Q9 ASD Installation and Operation Manual 201
Table 12. Fault Codes
EOI Display Fault Description Possible Cause
Abnormal CPU2 Abnormal CPU2 Communication. • Service call required.
Add-On Option 1 Add-On Option 1 Error. • Service call required.
Add-On Option 2 Add-On Option 2 Error. • Service call required.
Analog in Loss Analog Input Loss.
• V/I input terminal configured for operation but the
voltage/current input is either missing or low.
• Over-current at P24.
Analog in OV Analog Input Terminal Over-Voltage. • Mis-wire at the ASD input terminals.
ASD Overload ASD Overload.
• Acceleration time is too short.
• DC Injection current is too high.
• V/f setting needs to be adjusted.
• Motor running during restart.
• ASD/motor improperly matched to the application.
ASD RAM Fault ASD RAM Fault. • Service call required.
ASD ROM Fault ASD ROM Fault. • Service call required.
CPU Fault CPU Fault. • Service call required.
Ctrl Read Err Initial Read Error (Parameter Initialization). • Service call required.
Current Err Current Detection Hardware Error.
• Improper low-current detection level setting.
• Motor (phase) is disconnected.
Discrete in Volts
Improper Input Voltage Level at Discrete
Input Terminal.
• Discrete input terminal configured for operation
and the input activation voltage level is out of
specification.
EEPROM Write Err EEPROM Fault (Writing Error). • Service call required.
Emergency Off
Emergency Off Command Received Via
Keypad or Remotely. Output Signal From
the ASD is Terminated.
• Stop-Reset pressed twice at the EOI.
• E-Off command received remotely.
• Select stopped method at F603.
Encoder Loss Encoder Loss. • Encoder signal not received.
Gate Array Fault Gate Array Fault.
• Defective gate array or gate array malfunction.
• Service call required.
Ground Fault Ground Fault.
• Mis-wired ground.
• Loose ground connection.
Input Phase Input Phase Failure.
• Mis-wired input phase.
• Loose input phase connection.
Low-Current Low-Current Operation. • Improper low-current detection level setting.
Main Read Err Initial Read Error (Parameter Initialization). • Service call required.
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