YASKAWA A1000 HHP Programming Manual page 187

Digital Operator Display
Motor brake is engaged
Digital Operator Display
Cause
Diode module cooling fan has malfunctioned.
Digital Operator Display
Cause
PG encoder is disconnected, improperly
wired, or the PG option card or PG encoder are
damaged
Digital Operator Display
Cause
Noise interference along the PG cable
PG cable is not wired properly
PG option card or the PG encoder are damaged If the problem continues after cycling power, replace the PG option card or the PG encoder.
Digital Operator Display
Cause
Fault output by DriveWorksEZ
Digital Operator Display
Cause
Data has not been received from the PLC
Digital Operator Display
Cause
Panel fan or panel fan control has
malfunctioned
YASKAWA ELECTRIC SIEP YEAHHP 01B YASKAWA AC Drive – A1000 HHP Programming Manual
Ensure the motor brake releases properly.
Abnormal Diode Module Fan
dFAn
Displays when diode converter module(s) has a fan fault
• Cycle power to the drive.
• Check for fan operation.
• Verify the cumulative operation time of the fan with monitor U4-03, and verify the cumulative operation
time of the fan maintenance timer with U4-04.
• If the cooling fan has exceeded its expected performance life or is damaged in any other way, replace
the cooling fan.
Z Pulse Fault (CLV/PM control mode only)
dv1
The motor turned one full rotation without the Z Pulse being detected.
• Make sure the PG encoder is properly connected and all shielded lines are properly grounded.
• If the problem continues after cycling power, replace the PG option card or the PG encoder.
Z Pulse Noise Fault Detection (CLV/PM control mode only)
dv2
The Z Pulse is out of phase by more than 5 degrees for 10 consecutive revolutions.
Separate the PG cable lines from the source of the noise.
Rewire the PG encoder and properly ground all shielded lines.
dWAL
DriveWorksEZ Fault
dWFL
Correct the cause of the fault.
MECHATROLINK Watchdog Timer Error
E5
The watchdog timed out.
Execute DISCONNECT or ALM_CLR, then issue a CONNECT command or SYNC_SET command and
proceed to phase 3. Refer to the SI-T3 Option Technical Manual for more details on troubleshooting.
Abnormal Panel Fan
EFAn
Displays when the Panel Fan Control detects a fan fault
• Cycle power to the drive.
• Check for fan operation.
• Verify the cumulative operation time of the fan with monitor U4-03, and verify the cumulative operation
time of the fan maintenance timer with U4-04.
• If the cooling fan has exceeded its expected performance life or is damaged in any other way, replace
the cooling fan.
Fault Name
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
2.4 Fault Detection
2
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