HOA Keypad Display
Minor Fault Name
De-Scale/De-rag
Active
De-scale is running
Cause
Possible Solution
De-scale is programmed and enough run-
time has been accumulated.
If De-scale/De-rag is not desired, program P8-01 = 0 (Disabled).
Adjust the De-scale Run Timer P8-08.
HOA Keypad Display
Minor Fault Name
Differential FB
Detected
Differential Feedback Detected
Cause
Possible Solution
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.
• Replace the feedback transducer or transducers.
• Verify parameter settings P4-18 to P4-20.
HOA Keypad Display
Minor Fault Name
dnE
Drive Disabled
Cause
Possible Solution
“Drive Enable” is set to a multi-function
contact input (H1-
oo
= 6A) and the
contact is open.
Check the operation sequence.
HOA Keypad 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 Solution
Sequence error
Check the forward and reverse command sequence and correct the problem.
Note:
When minor fault EF detected, motor ramps to stop.
HOA Keypad Display
Minor 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 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.
HOA Keypad Display
Minor Fault Name
EF1
Pump Fault (Input Terminal S1)
External fault at multi-function input terminal S1.
EF2
Pump fault (input terminal S2)
External fault at multi-function input terminal S2.
EF3
Pump fault (input terminal S3)
External fault at multi-function input terminal S3.
EF4
Pump fault (input terminal S4)
External fault at multi-function input terminal S4.
EF5
Pump fault (input terminal S5)
External fault at multi-function input terminal S5.
EF6
Pump fault (input terminal S6)
External fault at multi-function input terminal S6.
EF7
Pump fault (input terminal S7)
External fault at multi-function input terminal S7.
EF8
Pump fault (input terminal S8)
External fault at multi-function input terminal S8.
5.3 Alarm Detection
YASKAWA TOEP YAIP1W 01F YASKAWA AC Drive - iQpump1000 User Manual
273
5
Troubleshooting
Содержание iQpump1000
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