Omron Q2A Series Technical Manual page 257

Code Name
Note:
• The drive detects this error if it does not detect a Z pulse during one motor rotation.
• Do a Fault Reset to clear the fault.
Code Name
dv3 Inversion Detection
Note:
• The drive detects this error if:
–the torque reference and acceleration are in opposite directions.
–the speed reference and actual motor speed are more than 30% different for the number of times set to F1-18 [Dev3 Mode Selection].
• Do a Fault Reset to clear the fault.
Code Name
dv4 Inversion Prevention Detection
Note:
• The drive detects this error if the pulses in the opposite direction of the speed reference are more than the value set in F1-19.
• Do a Fault Reset to clear the fault.
Code Name
dv7 Polarity Judge Timeout
Note:
• The drive detects this error if it cannot detect polarity in a pre-set length of time.
• Do a Fault Reset to clear the fault.
Code Name
MECHATROLINK Watchdog
E5
Timer Err
Note:
• Do a Fault Reset to clear the fault.
• If the drive detects this fault, it will operate the motor as specified by the stop method set in F6-25 [MLII Watchdog Error Sel].
SIEPYEUOQ2A01A AC Drive Q2A Technical Manual
Causes
The PG option card or the encoder on the motor
side is damaged.
Causes
E5-11 [Enc ZPulse Offset] is set incorrectly.
There is a new encoder or the motor rotation
direction changed.
An external force on the load side rotated the motor. • Make sure that the motor is rotating in the correct direction.
Noise interference along the encoder cable.
The encoder cable is disconnected or incorrectly
wired.
The setting for F1-05 [Enc1 Rotat Selection] is the
opposite of the direction of motor rotation.
The PG option card or the encoder on the motor
side is damaged.
Causes
An external force on the load side moved the motor.
E5-11 [Enc ZPulse Offset] is set incorrectly.
There is a new encoder or the motor rotation
direction changed.
Noise interference along the encoder cable
The encoder cable is disconnected or incorrectly
wired.
The PG option card or the encoder on the motor
side is damaged.
Causes
There is a disconnection in the motor coil winding.
The screws on the drive output terminals are loose.
Causes
The drive detected a watchdog circuit exception
while it received data from the controller.
Possible Solutions
Repair the wiring and re-energize the drive, then replace the PG
option card or the encoder if the problem continues.
Possible Solutions
Correctly set the value for Δθ to E5-11 as specified by the values
on the motor nameplate.
Do Z Pulse Offset Tuning.
• Find and repair problems on the load side that cause the motor
to rotate from the load side.
Correctly ground the shielded wire of the encoder cable.
Examine for wiring errors or disconnected wires in the encoder
cable, and repair problems.
Correctly connect the motor wiring for each phase (U, V, W).
Repair the wiring and re-energize the drive, then replace the PG
option card or the encoder if the problem continues.
Possible Solutions
• Make sure that the motor is rotating in the correct direction.
• Find and repair problems on the load side that cause the motor
to rotate from the load side.
• Disable detection of this fault for applications that rotate the
motor from the load side in the opposite direction of the speed
reference. The drive will not detect this fault if F1-19 = 0
[Dev4 Mode Selection = Disabled].
Correctly set the value for Δθ to E5-11 as specified by the values
on the motor nameplate.
Do Z Pulse Offset Tuning.
Correctly ground the shielded wire of the encoder cable.
Examine for wiring errors or disconnected wires in the encoder
cable, and repair problems.
Repair the wiring and re-energize the drive, then replace the PG
option card or the encoder if the problem continues.
Possible Solutions
Measure the motor line-to-line resistance and replace the motor if
a coil is disconnected.
Tighten the terminal screws to the correct tightening torque.
Possible Solutions
Examine the MECHATROLINK cable connection. If this error
occurs frequently, examine the wiring and decrease the effects of
electrical interference as specified by these manuals:
• MECHATROLINK-II Installation Guide (MECHATROLINK
Members Association, manual number MMATDEP011)
• MECHATROLINK-III Installation Guide (MECHATROLINK
Members Association, manual number MMATDEP018)
7.4 Faults
7
257