CHAPTER 7 - DIAGNOSTICS AND TROUBLESHOOTING
Load inertia too high or deceleration ramp too short
Load on the motor shaft too high
P154 and P155 programmed incorrectly
Do not reset this fault and
Cables U, V, W to motor are inverted
restart without first correcting
Encoder channels A and B are inverted
Encoder mounted in wrong position
the encoder or of the motor.
This fault can only occur during Self-tuning
Bad contact or broken wiring between motor and inverter
Incorrect value programmed in P401
Vector Control without orientation
Vector Control with encoder, encoder wiring or connection to motor is
When the effective overspeed exceeds the value of P134+P132 longer
It is automatically reset
Incompatible parameters were programmed. Refer to table 4.2
It is automatically reset when
Keypad cable misconnected
Electrical noise in the installation (electromagnetic interference)
Motor is under an actual overload condition
Duty cycle is too high (too many starts/stops per minute)
Ambient temperature is too high
Motor thermistor miswiring or short-circuit (resistance < 100
terminals XC4:2 and XC4:3 of the optional board EBA or at the terminals
XC5:2 and XC5:3 of the optional board EBB
P270 programmed to 16 unintentionally, with EBA/EBB board not
installed and/or motor thermistor not connected
Motor in locked rotor condition
The load was too heavy and the CFW-09 operated at torque limitation
for a period longer than allowed
Failure on the brake opening caused the CFW-09 to operate at torque
limitation for a period longer than
Memory error or any internal inverter circuit defective
- Faults and possible causes
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