YASKAWA P1000

Digital Operator Display Minor Fault Name
EF
Forward/Reverse Run Command Input Error
Both forward run and reverse run closed simultaneously for longer than 0.5 s.
Cause Possible Solutions
Sequence error
Check the forward and reverse command sequence and correct the problem.
Note: When minor fault EF detected, motor ramps to stop.
Digital Operator Display Minor Fault Name
EF0
Option Card External Fault
An external fault condition is present.
Cause Possible Solutions
An external fault was received from the
PLC with F6-03 set to 3, which allows the
drive to continue running after an external
fault occurs.
• Remove the cause of the external fault.
• Remove the external fault input from the PLC.
There is a problem with the PLC program. Check the PLC program and correct problems.
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.
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.
EF8
External fault (input terminal S8)
External fault at multi-function input terminal S8.
Cause Possible Solutions
An external device has tripped an alarm
function.
Remove the cause of the external fault and reset the multi-function input value.
Wiring is incorrect.
• Ensure the signal lines have been connected properly to the terminals assigned for external fault detection
(H1-oo = 2C to 2F).
• Reconnect the signal line.
Multi-function contact inputs are set
incorrectly.
•
Check if the unused terminals have been set for H1-oo = 2C to 2F (External Fault).
• Change the terminal settings.
Digital Operator Display Minor Fault Name
EoF EoF Emergency Override Forward Run
Cause Possible Solution
The multi-function digital input for
EmergOverrideFWD (H1-oo = AF) has
been closed.
Open H1-oo = AF if the emergency condition is no longer present
Digital Operator Display Minor Fault Name
Eor Eor Emergency Override Reverse Run
Cause Possible Solution
The multi-function digital input for
EmergOverrideREV (H1-oo = B0) has
been closed.
Open H1-oo = B0 if the emergency condition is no longer present
6.5 Alarm Detection
YASKAWA SIEP YAIP1U 01C AC Drive - P1000 Technical Manual
313
6
Troubleshooting