YASKAWA FSDrive-MV1000 Instructions Manual page 145

Digital Operator Display
Er-10
Cause
The connection of drive and PG encorder
(pulses A, B) or the connection of drive and
motor (phases U, V, W) is wrong.
Motor and PG direction are opposite.
The load pulled the motor in the opposite
direction of the speed reference and the torque
exceeded 100% in Closed Loop Vector
Control.
Digital Operator Display
Er-11
Cause
Torque reference is too high during the
acceleration (only for the Open Loop Vector
Control).
Digital Operator Display
Er-12
Cause
One of the motor phases is missing: (U, V, W). ⇒Check all wiring and correct any mistakes.
Current exceeded the current rating of the
motor.
The current is too low.
Attempted Auto-Tuning without motor
connected to the drive.
Current detection signal error.
YASKAWA ELECTRIC EZZ010928 FSDrive-MV1000 Instructions
Motor Direction Error (detected only during Rotational Auto-Tuning)
⇒Check and correct wiring to the PG encoder.
⇒Check the wiring of motor.
Check the motor speed monitor U1-05 while turning the motor manually in forward
direction.
⇒If the sign displayed is negative, change the setting of parameter F1-05.
• The motor is turning around pulled by the machine.
⇒Uncouple the motor from the machine.
• There is a problem in PG's wiring, PG's rotation direction, and the setting of F1-05.
⇒Check PG's wiring and the setting of F1-05.
Motor Speed Fault (detected only during Rotational Auto-Tuning)
⇒Increase the acceleration time (C1-01).
⇒Disconnect the machine from the motor, if possible.
Current Detection Error
⇒Check the motor wiring for a short between motor lines.
⇒If a magnetic contactor is used between motors, make sure it is closed.
⇒Replace the board. For instructions on replacing it, contact Yaskawa or your nearest sales
representative.
⇒Connect the motor and perform Auto-Tuning.
⇒Replace the board. For instructions on replacing it, contact Yaskawa or your nearest sales
representative.
5.7 Auto-Tuning Fault Detection
Error Name
Possible Solution
Error Name
Possible Solution
Error Name
Possible Solution
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