YASKAWA iQpump1000 User Manual page 273

HOA Keypad Display
De-Scale/De-rag
Active
Cause
De-scale is programmed and enough run-
time has been accumulated.
HOA Keypad Display
Differential FB
Detected
Cause
The difference between the PID Feedback
and the Differential Feedback (H3-oo =
28) exceeded the P4-18 level for the time
set in P4-19.
HOA Keypad Display
dnE
Cause
"Drive Enable" is set to a multi-function
contact input (H1-oo = 6A) and the
contact is open.
HOA Keypad Display
EF
Cause
Sequence error
HOA Keypad Display
EF0
Cause
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.
There is a problem with the PLC program. Check the PLC program and correct problems.
HOA Keypad Display
EF1
EF2
EF3
EF4
EF5
EF6
EF7
EF8
YASKAWA TOEP YAIP1W 01F YASKAWA AC Drive - iQpump1000 User Manual
De-scale is running
If De-scale/De-rag is not desired, program P8-01 = 0 (Disabled).
Adjust the De-scale Run Timer P8-08.
Differential Feedback Detected
• Replace the feedback transducer or transducers.
• Verify parameter settings P4-18 to P4-20.
Drive Disabled
Check the operation sequence.
Forward/Reverse Run Command Input Error
Both forward run and reverse run closed simultaneously for longer than 0.5 s.
Check the forward and reverse command sequence and correct the problem.
Note: When minor fault EF detected, motor ramps to stop.
Option Card External Fault
An external fault condition is present.
• Remove the cause of the external fault.
• Remove the external fault input from the PLC.
Pump Fault (Input Terminal S1)
External fault at multi-function input terminal S1.
Pump fault (input terminal S2)
External fault at multi-function input terminal S2.
Pump fault (input terminal S3)
External fault at multi-function input terminal S3.
Pump fault (input terminal S4)
External fault at multi-function input terminal S4.
Pump fault (input terminal S5)
External fault at multi-function input terminal S5.
Pump fault (input terminal S6)
External fault at multi-function input terminal S6.
Pump fault (input terminal S7)
External fault at multi-function input terminal S7.
Pump fault (input terminal S8)
External fault at multi-function input terminal S8.
Minor Fault Name
Possible Solution
Minor Fault Name
Possible Solution
Minor Fault Name
Possible Solution
Minor Fault Name
Possible Solution
Minor Fault Name
Possible Solution
Minor Fault Name
5.3 Alarm Detection
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