Part Number: DRV8323R
I am controlling PMDC motor using DRV8323RS, sometimes while changing direction of motor my Fault LED lite up permanently (nFault pin goes low). A ISR is configured to read the status register of DRV. following are my observations.
1) toggling Enable pin doesn't change status of fault pin.
2) Reading the Status register on SPI doesn't show any fault.
3)DRV works properly i.e. all modulation works.
4) The Fault pin is clearing only after power cycle.
I have connected the PMDC on WH1A and WH2A in the schematic attached.
please let me know how to reset the fault pin.
Thanks for posting on the MD forum!
Are you monitoring both register 0x00 and 0x01? These are both fault status registers that need to be monitored.
How long are you toggling ENABLE? Only a toggle for between 8uS and 40µs can be used to clear faults.
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In reply to Adam Sidelsky:
I am monitoring all the registers of DRV whenever I am getting fault. I tried by re-initializing all the parameters of the DRV and also by toggling the ENABLE as per datasheet.
In reply to Pankaj Krishnantrey:
Did this issue get resolved?
It's not resolved yet,
We are facing this issue randomly, We got some field failures as my colleague has raised a query on the forum also.
Let us know if any further details is needed.
I am answering in the other thread so I will close this one.
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