Acceleration and deceleration times are set
too short.
Increase the acceleration and deceleration times (C1-01 through C1-08).
The load is locked up. Check the machine.
Parameters are not set appropriately. Check the settings of parameters F1-10 and F1-11.
Motor brake engaged. Ensure the motor brake releases properly.
LED Operator Display Fault Name
dWFL DriveWorksEZ Fault
dWAL DriveWorksEZ Program Error Output
Cause Possible Solution
Fault output by DriveWorksEZ Correct the cause of the fault.
LED Operator Display Fault Name
E5
MECHATROLINK Watchdog Timer Error
The watchdog timed out.
Cause Possible Solution
Data has not been received from the PLC,
triggering the watchdog timer.
Execute DISCONNECT or ALM_CLR, then issue a CONNECT command or SYNC_SET command
and proceed to phase 3.
LED 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
with other than F6-03 = 3 “alarm only” (the
drive continued to run after external fault).
• 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.
LED Operator Display Fault Name
EF1
External Fault (input terminal S1)
External fault at multi-function input terminal S1.
EF2
External Fault (input terminal S2)
External fault at multi-function input terminal S2.
EF3
External Fault (input terminal S3)
External fault at multi-function input terminal S3.
EF4
External Fault (input terminal S4)
External fault at multi-function input terminal S4.
EF5
External Fault (input terminal S5)
External fault at multi-function input terminal S5.
EF6
External Fault (input terminal S6)
External fault at multi-function input terminal S6.
EF7
External Fault (input terminal S7)
External fault at multi-function input terminal S7
Cause Possible Solution
An external device has tripped an alarm
function.
Remove the cause of the external fault and reset the fault.
Wiring is incorrect.
• Ensure the signal lines have been connected properly to the terminals assigned for external fault
detection (H1-oo = 20 to 2F).
• Reconnect the signal line.
Incorrect setting of multi-function contact
inputs.
•
Check if the unused terminals set for H1-oo = 20 to 2F (External Fault).
• Change the terminal settings.
LED Operator Display Fault Name
Err
EEPROM Write Error
Data does not match the EEPROM being written to.
Cause Possible Solution
-
•
Press the button.
• Correct the parameter settings.
• Cycle power to the drive. Refer to Diagnosing and Resetting Faults on page 279.
6.4 Fault Detection
256
YASKAWA ELECTRIC SIEP C710606 16C YASKAWA AC Drive – V1000 Technical Manual
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