Yaskawa Option PG-F3 Motor Encoder Feedback - Manual (Page 35)

YASKAWA ELECTRIC TOBP C730600 51F 1000-Series Option PG-F3 Installation Manual 35
7 Troubleshooting
7 Troubleshooting
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Drive-Side Error Codes
Table 11 lists the various fault codes related to the option and pulse generator. Refer to the
drive Technical Manual for further details on fault codes.
Check the following items first when an error code occurs on the drive:
• Are the cables connected properly and securely?
• Is the option properly installed to the drive?
• Did a momentary power loss occur?
Table 11 Fault Displays, Causes, and Possible Solutions
Digital Operator Display Fault Name
dEv
Speed Deviation (for Control Mode with PG)
The deviation between the speed reference and speed feedback is greater than the
setting in F1-10 for longer than the time set to F1-11.
Cause Possible Solution
The load is too heavy. Reduce the load.
The acceleration and
deceleration times are set too
short or too long.
Increase or decrease the acceleration and deceleration times (C1-01 through C1-
08).
The load is locked up. Check the machine.
Parameters are set
inappropriately.
Check the settings of parameters F1-10 and F1-11.
Motor brake is engaged. Ensure the motor brake releases properly.
Brake control sequence is
incorrect.
Correct the brake control sequence and verify that the brake is released.
Digital Operator Display Fault Name
dv3
Inversion Detection
• Torque reference and acceleration are in opposite directions.
• The speed reference and actual motor speed differ by over 30% for the number
of pulses set to parameter F1-18.
Cause Possible Solution
E5-11 is not set properly. Set the value for Δθ to E5-11 as specified on the motor nameplate.
An external force on the load
side caused the motor to move.
• Make sure the motor is rotating in the proper direction.
• Investigate problems on the load side causing motor rotation in the opposite
direction.