Omron SYSDRIVE 3G3FV User Manual

5-38
Fault display Probable cause and remedy
Accelerate
(Motor acceleration fault)
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. → Remove the load.
Rated Slip
(Rated slip fault)
The rated slip setting can’t be tuned within the prescribed time.
• A load is connected to the motor axis. → Remove the load.
Saturation-1
(Core-saturation coefficient 1 fault)
The core-saturation coefficients can’t be tuned within the prescribed
time.
• The rated current setting isn’t correct.
Saturation-2
(Core-saturation coefficient 2 fault)
g
→ Check and change the setting if necessary.
• There is a broken/disconnected motor power wire.
→ Check and replace wiring components if necessary.
Resistance
(Motor wire resistance fault)
The motor terminal resistance or no-load current setting can’t be tuned
within the prescribed time.
• The rated current setting isn’t correct.
No-load Current
(Motor no-load current fault)
g
→ Check and change the setting if necessary.
• There is a broken/disconnected motor power wire.
→ Check and replace wiring components if necessary.
PGO, PG Open
(Broken PG cable detection)
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.
PG Direction
(Motor direction error)
• 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.
Minor Fault
(Minor fault)
• A minor fault has occurred in the Inverter (warning or alarm detected).
→ Refer to Chapter 8 Maintenance Operations for appropriate actions.
V/f Over Setting
(V/f setting too high)
• 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.
Basic Operation Chapter 5

Omron SYSDRIVE 3G3FV Specifications

General

Brand	Omron
Model	SYSDRIVE 3G3FV
Category	Inverter
Language	English