Monitor AB PowerFlex heatsink temp. - PLCS.net

James42005 · January 13th, 2022, 10:31 PM

Is there a way to pull the heatsink temp from parameters to the PLC? I've had a couple critical drives fault recently for failed heatsink fans. We have them on a PM now, and I know you can set alarms for service life but that won't catch a premature failure. Any ideas?

drbitboy · January 13th, 2022, 11:01 PM

as long as the fan is turning above some minimum speed the temperature doesn't matter. monitor whether the fans are running, e.g. a flashing light if the fan blades, or airflow, stops.

There's got to be a simple circuit to do that.

ExcessiveDilutivity · January 14th, 2022, 03:38 PM

Powerflex 753 has the following parameters available through datalinks, I would start here.

941 IGBT Temp Pct
942 IGBT Temp C
943 Drive Temp Pct
944 Drive Temp C

It's been my experience that once the heatsink fans fail, you have about 10 minutes before the drive trips. Monitoring the heatsink temperature may not be the solution you are looking for.

January 13th, 2022, 10:31 PM	#1
James42005 Member Join Date: Dec 2018 Location: Waterloo, IA Posts: 29	Monitor AB PowerFlex heatsink temp. Is there a way to pull the heatsink temp from parameters to the PLC? I've had a couple critical drives fault recently for failed heatsink fans. We have them on a PM now, and I know you can set alarms for service life but that won't catch a premature failure. Any ideas?

January 13th, 2022, 11:01 PM	#2
drbitboy Lifetime Supporting Member Join Date: Dec 2019 Location: Rochester, NY Posts: 5,409	as long as the fan is turning above some minimum speed the temperature doesn't matter. monitor whether the fans are running, e.g. a flashing light if the fan blades, or airflow, stops. There's got to be a simple circuit to do that. __________________ _ Brian T. Carcich i) Take care of the bits, and the bytes will take care of themselves. ii) There is no software problem that cannot be solved with another layer of indirection. iii) Measurement is hard. iv) I solemnly swear that I am up to no good

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January 14th, 2022, 03:38 PM	#3
ExcessiveDilutivity Member Join Date: Feb 2021 Location: USA Posts: 9	Powerflex 753 has the following parameters available through datalinks, I would start here. 941 IGBT Temp Pct 942 IGBT Temp C 943 Drive Temp Pct 944 Drive Temp C It's been my experience that once the heatsink fans fail, you have about 10 minutes before the drive trips. Monitoring the heatsink temperature may not be the solution you are looking for.

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