Yaskawa J1000 Compact V/f Control Drive - Manual (Page 143)

Digital Operator Display Minor Fault Name
Sequence error
Check the forward and reverse command sequence and correct the
problem.
Note: Motor ramps to stop when minor fault EF is detected.
YES
Digital Operator Display Minor 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.
Cause Possible Solution
Minor
Fault
(H2- =
10)
An external device has tripped an
alarm function.
Remove the cause of the external fault and reset the multi-function
input value.
YES
Wiring is incorrect.
• Ensure the signal lines have been connected properly to the
terminals assigned for external fault detection (H1- = 20 to 2F).
• Reconnect the signal line.
Multi-function contact inputs are
set incorrectly.
• Check if the unused terminals have been set for H1- = 20 to 2F
(External Fault).
• Change the terminal settings.
Digital Operator Display Minor Fault Name
oH
Heatsink Overheat
The temperature exceeded the value set to L8-02.
Cause Possible Solution
Minor
Fault
(H2- =
10)
5.5 Alarm Detection
YASKAWA ELECTRIC TOEP C710606 26D YASKAWA AC Drive – J1000 Quick Start Guide 143
5
Troubleshooting