Omron SYSDRIVE 3G3FV User Manual page 160

Basic Operation
Fault display
Accelerate
(Motor acceleration fault)
Rated Slip
(Rated slip fault)
Saturation-1
(Core-saturation coefficient 1 fault)
Saturation-2
(Core-saturation coefficient 2 fault)
Resistance
(Motor wire resistance fault)
No-load Current
(Motor no-load current fault)
PGO, PG Open
(Broken PG cable detection)
PG Direction
(Motor direction error)
Minor Fault
(Minor fault)
V/f Over Setting
(V/f setting too high)
5-38
Probable cause and remedy
The motor doesn't accelerate within the prescribed time.
The torque limit function is operating.
Initialize the torque limit parameters (H7-01 to H7-04).
The acceleration time is too short.
Increase acceleration time 1 (C1-01).
A load is connected to the motor axis.
The rated slip setting can't be tuned within the prescribed time.
A load is connected to the motor axis.
The core-saturation coefficients can't be tuned within the prescribed
time.
The rated current setting isn't correct.
Check and change the setting if necessary.
There is a broken/disconnected motor power wire.
Check and replace wiring components if necessary.
The motor terminal resistance or no-load current setting can't be tuned
within the prescribed time.
The rated current setting isn't correct.
Check and change the setting if necessary.
There is a broken/disconnected motor power wire.
Check and replace wiring components if necessary.
Pulses aren't being input from the PG even though a rotation output is
being sent to the motor.
The cable to the PG is broken/disconnected.
Check the wiring and correct any problems.
The PG's power supply is broken/disconnected.
Check the power supply voltage and correct if necessary.
The motor direction and PG direction are different.
Motor power lines are wrong. Connect in following order: U, V, W.
Encoder wiring is wrong. Wire phase A, phase B, and + correctly.
F1-05 is set incorrectly. Set so that the directions agree.
A minor fault has occurred in the Inverter (warning or alarm detected).
Refer to Chapter 8 Maintenance Operations for appropriate actions.
The torque reference exceeded 100% and the non-load current ex-
ceeded 70% of the rated motor current during auto-tuning.
The settings are incorrect for the rated voltage or rated frequency.
Correct the settings.
The motor is connected to a load. Disconnect the load.
Remove the load.
Remove the load.
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Chapter 5