YASKAWA SI-S3/V Series User Manual

34 YASKAWA ELECTRIC TOBP C730600 24D 1000-Series Option SI-S3/V, SI-S3/T Installation Manual
9 Fault Diagnosis and Possible Solutions
9 Fault Diagnosis and Possible Solutions
◆ Drive-Side Error Codes
Drive-side error codes appear on the drive’s LED operator. Causes of the errors and
corrective actions are listed in Table 7. For additional error codes that may appear on the
LED operator screen, refer to the technical manual for the drive.
■ Faults
bUS (CANopen Option Communication Error) and EF0 (External Fault Input from the
CANopen Option) may appear as an alarm or a fault. When a fault occurs, the digital
operator LEDs will remain lit. When an alarm occurs, the digital operator LEDs will flash
and the “ALM” light will illuminate
If communication stops while the drive is running, check the following items:
• Is the CANopen Option properly installed?
• Is the communication line properly connected to the CANopen Option? Is it loose?
• Is the controller program working? Has the controller CPU stopped?
• Did a momentary power loss interrupt communications?
Table 7 Fault Display and Possible Solutions
LED Operator Display Fault Name
bUS
CANopen Option Communication Error
After establishing initial communication, the connection was lost.
Only detected when the run command or frequency reference is assigned to
the option (b1-01 = 3 or b1-02 = 3).
Cause Possible Solution
Master controller (PLC) has stopped
communicating.
Check for faulty wiring.
⇒ Correct any wiring problems.
Communication cable is not connected
properly.
A data error occurred due to noise.
Check the various options available to minimize the effects of noise.
⇒ Take steps to counteract noise in the control circuit wiring, main circuit
lines, and ground wiring.
⇒ If a magnetic contactor is identified as a source of noise, install a surge
absorber to the contactor coil.
⇒ Make sure the cable used fulfills the CANopen requirements. Ground the
shield on the controller side and on the CANopen Option side.
CANopen Option is damaged.
⇒ If there are no problems with the wiring and the error continues to occur,
replace the CANopen Option.

YASKAWA SI-S3/V Series Specifications

General

Brand	YASKAWA
Model	SI-S3/V Series
Category	DC Drives
Language	English