YASKAWA U1000 - Motor Does Not Restart after Power Loss; The Safety Controller Does Not Recognize Safe Disable Monitor Output Signals (Terminals DM+ and DM-)

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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.
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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.
6.10 Troubleshooting without Fault Display
YASKAWA ELECTRIC SIEP C710636 04D U1000 Industrial MATRIX Drive Technical Manual
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Troubleshooting