Motor does not restart after power loss, And dm-) – Yaskawa Z1000U User Manual
Page 227
Cause
Possible Solutions
Hunting occurs at start.
Increase the S-curve time at the start of acceleration (C2-01).
Too much current is flowing through the drive.
For special-purpose motors, enter the correct data to all E5 parameters according to the test report
provided for the motor.
u
Motor Does Not Restart after Power Loss
Cause
Possible Solutions
The Run command was not issued again when power
was restored.
• Check the sequence and wiring that has been set up to enter the Run command.
• A relay should be set up to make sure the Run command remains enabled throughout any power
loss.
The relay that is supposed to maintain the Run
command has been switched off.
Check wiring and circuitry for the relay intended to keep the Run command enabled.
u
The Safety Controller Does Not Recognize Safe Disable Monitor Output Signals
(Terminals DM+ and DM-)
Cause
Possible Solutions
There is faulty wiring in the Safe Disable monitor
output terminals.
• Check the Safe Disable monitor output terminal wiring.
• Correct any wiring mistakes.
5.10 Troubleshooting without Fault Display
YASKAWA ELECTRIC TOEP C710636 10B Z1000U HVAC MATRIX Drive User Manual
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5
Troubleshooting