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Published 20 hours ago • verified publisher icon eez-open

DCP405: triggers unwanted Standby

Open fusedFET opened this issue 3 years ago • 7 comments

When disabling a channel, the BB3 sometimes goes into standby. Firmware: 1.7.3 HW: DCP405 R2B11

There is a large part of random to reproduce it, but I now have encountered it multiple times.

https://user-images.githubusercontent.com/8060929/144853461-93c4f194-fdb3-40eb-8456-0bc901d8086f.mp4

fusedFET avatar Dec 06 '21 12:12 fusedFET

Please let us know if anything is recorded in to event log (use icon in left down corner).

prasimix avatar Dec 06 '21 13:12 prasimix

Here is the event log when having the issue: image

Also, this might be related or interesting: image

fusedFET avatar Dec 06 '21 13:12 fusedFET

Ok, so you probably have this option enabled: image

prasimix avatar Dec 06 '21 14:12 prasimix

Correct, I have this setting enabled. Disabling the setting does no longer put the system in standby. It does now write a "Channel is tripped!" message.

fusedFET avatar Dec 06 '21 15:12 fusedFET

That's fine, that is the trip which bring them into standby mode due to that option activated. So it seems that some overshoot is present on the output enabled. Is it possible that you have load connected with longer cables on that channel?

prasimix avatar Dec 06 '21 15:12 prasimix

I do have some longer cables, about 40 cm. Maybe in order to clarify the issue, it would be practical to have a message on screen when going into standby for this reason: "OVP Triggered Standby..." ?

fusedFET avatar Dec 07 '21 07:12 fusedFET

I do have some longer cables, about 40 cm. Maybe in order to clarify the issue, it would be practical to have a message on screen when going into standby for this reason: "OVP Triggered Standby..." ?

Yes, that makes sense, otherwise it can look confusing (and scary) if the user forgets that he chose the option to go to standby because of the trip.

prasimix avatar Dec 07 '21 07:12 prasimix