Troubleshooting - YASKAWA 1000 Series Installation Manual

7 Troubleshooting

7 Troubleshooting
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Drive-Side Error Codes
Table 7 lists the various fault codes related to the option and pulse generator. Refer to the
drive Technical Manual for further details on fault codes.
Check the following items first when an error code occurs on the drive:
• Are the cables connected properly and securely?
• Is the option properly installed to the drive?
• Did a momentary power loss occur?
Table 7 Fault Displays, Causes, and Possible Solutions
Digital Operator Display
dEv
Cause
The load is too heavy.
The acceleration and
deceleration times are set too
short.
The load is locked up.
Parameters are set
inappropriately.
Motor brake is engaged.
Digital Operator Display
Cause
The PG encoder is disconnected
or is not wired properly, or the
PG option or PG encoder are
damaged.
Digital Operator Display
Cause
PG encoder cable noise
interference.
30
Speed Deviation (for Control Mode with PG)
The deviation between the speed reference and speed feedback is greater than the
setting in F1-10 for longer than the time set to F1-11.
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 motor brake releases properly.
Z Channel Pulse Fault Detection
dv1
The motor turned one full rotation while failing to detect the Z channel pulse.
• Rewire the PG encoder and make sure all wiring including shielded wiring is
properly connected.
• If the problem continues after cycling power, replace the PG option or the PG
encoder.
Z Channel Pulse Noise Fault Detection
dv2
The Z channel pulse is out of phase by more than 5 degrees for the number of
times specified in parameter F1-17.
Separate the PG encoder cable wiring from the source of the noise (e.g., drive
output wiring).
YASKAWA ELECTRIC TOBP C730600 37C 1000-Series Option PG-X3 Installation Manual
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution