YASKAWA A1000 Series Quick Start Manual page 101

Cause
There is an error in EEPROM control
circuit.
The power supply was switched off when
parameters were being saved to the drive.
Digital Operator Display
CPF07
CPF08
or
CPF20 or CPF21
<1>
CPF22
CPF23
CPF24
CPF26 to CPF34
to
Cause
Hardware is damaged.
Digital Operator Display
Cause
An external fault was received from the
PLC with other than F6-03 = 3 "alarm only"
(the drive continued to run after external
fault).
Problem with the PLC program.
YASKAWA ELECTRIC TOEP C710616 21C YASKAWA AC Drive - A1000 Quick Start Guide
• Turn the power off and check the connection between the control board and the drive.
• If the problem continues, replace either the control board or the entire drive. For instructions on
replacing the control board, contact Yaskawa or your nearest sales representative.
Reinitialize the drive (A1-03).
Terminal Board Connection Error
Control Circuit Error
Hybrid IC Error
Control Board Connection Error
Connection error between the control board and the drive
Drive Unit Signal Fault
The drive capacity cannot be detected correctly (drive capacity is checked when the drive is powered
up).
Control Circuit Error
CPU error
Replace either the control board or the entire drive. For instructions on replacing the control board,
contact Yaskawa or your nearest sales representative.
Speed Deviation (for Control Mode with PG)
dEv
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.
Z Pulse Fault
dv1
The motor turned one full rotation without the Z pulse being detected.
Z Pulse Noise Fault Detection
dv2
The Z pulse is out of phase by more than 5 degrees for the number of times specified in parameter
F1-17.
Inversion Detection
The torque reference and acceleration are in opposite directions from one another (one is in reverse
dv3
and the other is forward) while at the same time the speed reference and actual motor speed differ by
over 30% for the number of pulses set to F1-18.
Inversion Prevention Detection
Pulses indicate that the motor is rotating in the opposite direction of the speed reference. Set the
dv4
number of pulses to trigger inverse detection to F1-19.
Note: Disable inverse detection in applications where the motor may rotate in the opposite direction
of the speed reference. Setting F1-19 to 0 disables this feature.
dWAL
DriveWorksEZ Fault
dWFL
SI-T3 Watchdog Timer Error
E5
The watchdog has timed out.
Option Card External Fault
EF0
An external fault condition is present.
• Remove the cause of the external fault.
• Remove the external fault input from the PLC.
Check the PLC program and correct problems.
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
5 Troubleshooting
5
101