YASKAWA V1000 Series Technical Manual page 239

Cause
Load is too heavy
Acceleration and deceleration times are set too short.
The load is locked up.
Parameter settings are inappropriate.
The motor brake engaged.
LED Operator Display
Cause
"Drive Enable" is set to a multi-function contact input
(H1-oo = 6A) and that signal was switched off.
LED Operator Display
Cause
Sequence error
LED Operator Display
Cause
An external fault was received from the PLC with F6-03
= 3 (causing the drive to continue running when an
external fault occurs).
There is a problem with the PLC program.
LED Operator Display
Cause
An external device has tripped an alarm function.
Wiring is incorrect.
Multi-function contact inputs are set incorrectly.
LED Operator Display
Cause
Parameters settings for b5-36 and b5-37 are incorrect.
PID feedback wiring is faulty.
Feedback sensor has malfunctioned.
Feedback input circuit is damaged.
LED Operator Display
Cause
Parameters settings for b5-13 and b5-14 are incorrect.
PID feedback wiring is faulty.
Feedback sensor has malfunctioned.
Feedback input circuit is damaged.
LED Operator Display
YASKAWA ELECTRIC SIEP C710606 18A YASKAWA AC Drive – V1000 Technical Manual (Preliminary)
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 brake releases properly.
dnE Drive Disabled
Check the operation sequence.
Forward/Reverse Run Command Input Error
EF
Both forward run and reverse run closed simultaneously for over 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
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 multi-function input value.
• 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 have been set for H1-oo = 20 to 2F (External Fault).
• Change the terminal settings.
Excessive PID Feedback
FbH
The PID feedback input is higher than the level set in b5-36 for longer than the time set in b5-37, and b5-12 is set to 1 or 4.
Check parameters b5-36 and b5-37.
Correct the wiring.
Check the sensor and replace it if damaged.
Replace the drive.
PID Feedback Loss
FbL
The PID feedback input is lower than the level set in b5-13 for longer than the time set in b5-14, and b5-12 is set to 1 or 4.
Check parameters b5-13 and b5-14.
Correct the wiring.
Check the sensor and replace it if damaged.
Replace the drive.
Possible Solutions
Minor Fault Name
Possible Solutions
Minor Fault Name
Possible Solutions
Minor Fault Name
Possible Solutions
Minor Fault Name
Possible Solutions
Minor Fault Name
Possible Solutions
Minor Fault Name
Possible Solutions
Minor Fault Name
6.5 Alarm Detection
Minor Fault
Output
(H2-oo = 10)
YES
YES
YES
YES
YES
Minor Fault
Output
(H2-oo = 10)
YES
Minor Fault
Output
(H2-oo = 10)
YES
Minor Fault
Output
(H2-oo = 10)
YES
YES
Minor Fault
Output
(H2-oo = 10)
YES
YES
YES
Minor Fault
6
Output
(H2-oo = 10)
YES
YES
YES
YES
Minor Fault
Output
(H2-oo = 10)
YES
YES
YES
YES
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