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What is Current Limit Alarm on a Parker AC Drive?

rickpend

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What is Current Limit Alarm on a Parker AC Drive?
« on: October 06, 2016, 11:00:AM »
What is Current Limit Alarm on a Parker AC Drive?

What is Parker CURRENT LIMIT alarm mean on a Parker AC drive? I'm looking for a simple explanation as to what Current Limit means.

And how do you clear the current limit alarm from a Parker AC drive?
Have a good day,
+++ Rick +++

(Moore OK Industry Team Member)


tomtester

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Re: What is Current Limit Alarm on a Parker AC Drive?
« Reply #1 on: October 11, 2016, 09:14:AM »
What is Current Limit Alarm on a Parker AC Drive?

The troubleshooting guide says: If the current exceeds 180% of stack rated current for a period of 1 second, the drive will trip. This is caused by shock loads. Remove the cause of the shock load.

Definition of electrical shock load: A substantial, instantaneous, momentary rise in current.

You'll need to put your thinking cap on and investigate the loading of the drive. If this alarm appears on a proven system, then mechanical or physical changes in the system may have occurred. If this alarm appears on a newly commissioned system, then you'll need to  research the drive setup and design.
Best regards,
Tom Tester

travis

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Re: What is Current Limit Alarm on a Parker AC Drive?
« Reply #2 on: February 05, 2017, 06:08:AM »
I agree that a current limit alarm can be caused just a s much by an external force as it can be drive problems. Also the motor plays a huge role here since a shorted or partially shorted winding can also be the source of a current limit alarm.

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