This page describes how to verify the electrical integrity of PMC hardware.
WARNING: The procedures listed here are MUST DO in case of new hardware first power up.
There is basic built-in integrity check. It is useful to do this the first time you power PMC up to make sure that hardware is OK.
(pmc) pm_self_test
This test does the following steps in this order.
- Get current sensors zero drift and check it is within the acceptable range.
- Check actual bootstrap retention time and compare with configuration.
- Check the power stages respond to the control.
- Check measurement accuracy against the distortion introduced by PWM.
You can do it with or without machine connected. Ignore the appropriate error notification when do it without machine connected.
The result of self-adjustment is also useful in diagnosis since it allows you to identify abnormal deviations in measuring circuits.
(pmc) pm_self_adjust
This adjustment does the following steps in this order.
- Get current sensors zero drift and check it is within the acceptable range.
- Adjust the voltage measurement channels relatively to DC link voltage.
- Adjust the current measurement channels pairwise.
- Adjust dead-time distortion compensation (DCU).
Note that in last two steps you need to connect the machine (or test coil) to let the current flow in phase circuits.
Also look into Trouble Shooting page in case of you
getting any error codes in pm.fsm_errno.