GBL 1980: Emergency switch off

5 years 4 months ago #29530919 by Where
Hello,

I'm wondering how to integrate an emergency stop without taking power away from the controller.
Does the controller takes it's operating voltage also from the S3 port in case the positive battery lead is cut?

Enlighten me please :)

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5 years 4 months ago - 5 years 4 months ago #29530920 by TechSupport
The controller will have a logic E-stop function like the rest of our controllers that can be enabled to turn off the FETs(allows for free spin of motors).

This will keep the controller powered on, however the output stage will become disabled and FETs will float until the E-stop gets disengaged.

If the battery gets cut, then the power shuts off. The only way to keep controller on if vmot main line is cut off, is to have a back up battery powering the power control and ground for the logic portion only.

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5 years 4 months ago #29530931 by Where
I still don't see in the datasheet of the GBL 1980 where to connect the backup battery.
Is it connector S3 pin 9 + 14?

I think, the backup battery must have the same voltage as the main battery, correct?
Or can I combine e.g. a 48V backup battery with a 72V main battery?

In case the main battery is cut and I have no backup battery => Controller gets no power anymore:
Will the motor spin freely, is it Motor stopped immediately or is the state undefined?

Thank you for the detailed explanation.

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5 years 4 months ago #29530933 by TechSupport
After looking over the datasheet, there isn't a place for a back up battery.

I will forward thread to someone who can assist you with this.

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5 years 4 months ago #29530977 by Where

TechSupport wrote: I will forward thread to someone who can assist you with this.


Any news?
Thank you :)

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5 years 4 months ago #29530978 by TechSupport
I have forwarded again. We apologize for the inconvenience and appreciate your patience.

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5 years 4 months ago #29530981 by TechSupport
The GBL has a pin on the 16-pin connector for a connection to the
power source. This pin powers the logic board. Voltage range is 35V
min to VMax. This is pin 9(Vbat)

It also has the main battery terminal (labelled B+). This terminal
powers the MOSFETs. Voltage range is 0V min to VMax.

Power must be applied to both for normal operation.

Practically both should be connected to the same source (battery)
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