YASKAWA V1000 Series Technical Manual page 231

Cause
Hardware is damaged.
LED Operator Display
Cause
Load is too heavy.
Acceleration and deceleration times are set too short.
The load is locked up.
Parameters are not set appropriately.
Motor brake engaged.
LED Operator Display
Cause
DriveWorksEZ program output a fault.
LED Operator Display
Cause
An external fault was received from the PLC with F6-03 =
3 "alarm only" (the drive continued to run after external
fault).
Problem with the PLC program.
LED Operator Display
Cause
An external device has tripped an alarm function.
Wiring is incorrect.
Incorrect setting of multi-function contact inputs.
LED Operator Display
Cause
-
LED Operator Display
Cause
Parameters are not set appropriately.
Wiring for PID feedback is incorrect.
There is a problem with the feedback sensor.
LED Operator Display
Cause
Parameters are not set appropriately.
Wiring for PID feedback is incorrect.
There is a problem with the feedback sensor.
LED Operator Display
YASKAWA ELECTRIC SIEP C710606 18A YASKAWA AC Drive – V1000 Technical Manual (Preliminary)
Replace the drive.
Speed Deviation (for Simple V/f with PG)
dEv
According to the pulse input (RP), the speed deviation is greater than the setting in F1-10 for longer than the time set to F1-11.
Reduce the load.
Increase the acceleration and deceleration times (C1-01 through C1-08).
Check the machine.
Check the settings of parameters F1-10 and F1-11.
Ensure the motor brake releases properly.
dWFL DriveWorksEZ Fault
dWAL DriveWorksEZ Program Error Output
• Correct whatever caused the fault to occur.
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.
External Fault (input terminal S1)
EF1
External fault at multi-function input terminal S1.
External Fault (input terminal S2)
EF2
External fault at multi-function input terminal S2.
External Fault (input terminal S3)
EF3
External fault at multi-function input terminal S3.
External Fault (input terminal S4)
EF4
External fault at multi-function input terminal S4.
External Fault (input terminal S5)
EF5
External fault at multi-function input terminal S5.
External Fault (input terminal S6)
EF6
External fault at multi-function input terminal S6.
External Fault (input terminal S7)
EF7
External fault at multi-function input terminal S7.
Remove the cause of the external fault and reset the fault.
• 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.
• Check if the unused terminals set for H1-oo = 20 to 2F (External Fault).
• Change the terminal settings.
EEPROM Write Error
Err
Data does not match the EEPROM being written to.
•
Press the
• Correct the parameter settings.
• Cycle power to the drive.
Excessive PID Feedback
FbH
PID feedback input is greater than the level set b5-36 for longer than the time set to b5-37. To enable fault detection, set b5-12 = "2" or
"5".
Check the settings of parameters b5-36 and b5-37.
Correct the wiring.
• Check the sensor on the control side.
• Replace the sensor if damaged.
PID Feedback Loss
FbL
This fault occurs when PID Feedback Loss Detection is programmed to fault (b5-12 = 2) and the PID Feedback < PID Feedback Loss
Detection Level (b5-13) for the PID Feedback Loss Detection Time (b5-14).
Check the settings of parameters b5-13 and b5-14.
Correct the wiring.
Check the sensor on the controller side.If damaged, replace the sensor.
Ground Fault
GF • Current shorted to ground exceeded 50% of rated current on output side of the drive.
• Setting L8-09 to 1 enables ground fault detection in models 5.5 kW or larger.
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
button.
Refer to Diagnosing and Resetting Faults on page
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
6.4 Fault Detection
247.
6
231