to
to
CPF26 to CPF35
CPF40 to CPF45
Control Circuit Error
CPU error
Cause Possible Solution
Hardware is damaged
• Cycle power to the drive.
• If
the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa
representative for instructions on replacing the control board.
Digital Operator Display Fault Name
dEv
Speed Deviation (for Control Mode with PG and AOLV/PM without 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.
dv1
Z Pulse Fault (CLV/PM control mode only)
The motor turned one full rotation without the Z Pulse being detected.
dv2
Z Pulse Noise Fault Detection (CLV/PM control mode only)
The Z Pulse is out of phase by more than 5 degrees for 10 consecutive revolutions.
dv3
Inversion Detection (CLV/PM control mode only)
The torque reference and acceleration are in opposite directions and the speed reference and actual motor
speed differ by more than 30% for the number of times set to F1-18.
dv4
Inversion Prevention Detection (CLV/PM control mode only)
Pulses indicate that the motor is rotating in the opposite direction of the speed reference. Set the number
of pulses to trigger inverse detection to F1-19.
Note: Set F1-19 to 0 to disable inverse detection in applications where the motor may rotate in
the opposite direction of the speed reference.
<1>
dv7 Initial Polarity Estimation Timeout
<1> Available in drive software versions PRG: 1015 and later.
dWAL
DriveWorksEZ Fault
dWFL
Digital Operator Display Fault Name
dWF1
EEPROM Memory DriveWorksEZ Data Error
There is an error in the DriveWorksEZ program saved to EEPROM.
Digital Operator Display Fault Name
E5
MECHATROLINK Watchdog Timer Error
The watchdog timed out.
Cause Possible Solution
Data has not been received from the PLC
Execute DISCONNECT or ALM_CLR, then issue a CONNECT command or SYNC_SET command and
proceed to phase 3. Refer to the SI-T3 Option Technical Manual for more details on troubleshooting.
Digital Operator Display Fault Name
EF0
Option Card External Fault
An external fault condition is present.
Cause Possible Solution
An external fault was received from the PLC
and F6-03 is set to a value other than 3.
• Remove the cause of the external fault.
• Remove the external fault input from the PLC.
Problem with the PLC program Check the PLC program and correct problems.
Digital Operator Display Fault Name
EF1
External Fault (input terminal S1)
External fault at multi-function input terminal S1.
5.2 Fault Detection
182
YASKAWA ELECTRIC TOEP C710616 41G YASKAWA AC Drive - A1000 Quick Start Guide
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