Power out of range? (3V)

[sporkman]

One of my WS-6-Mini switches has logged this a few times, is this anything to be concerned about?

Code: Select all

 
Jul 9 04:39:09 switch[1338]: 3V is out of range (3.1V)

Jul 12 22:30:50 switch[1338]: 3V is out of range (3.5V)

 

Running 1.4.2 final. Hardware/board rev. is "E".


Total power draw (switch and two radios) is under 20W.

(this is not the other switch I've been posting about recently)

[sirhc]

No, it will not hurt anything.

The valid range is 3.135-3.465 so 3.1 and 3.5 are just outside that range.

It should not fluctuate unless there is something going on such as maybe grounding???

[orders@xytel.net]

I'm getting the same thing on my WS-6-MINI, Interestingly enough, it only started after I updated to 1.4.2, previously on 1.3.8 (out of box firmware) I didn't have this issue... Nothing changed hardware wise.

[lligetfa]

I'm getting the same thing on my WS-6-MINI...

On the same 3V line? The 48V line is prone to that error if there is a long line on PoE in and high current draw.

[sirhc]

The next firmware version will correct this, try v1.4.3rc3

[jakematic]

The next firmware version will correct this, try v1.4.3rc3

Still showing up in 1.4.3rc4
Upgraded to it last night because the syslog alerts were driving me crazy...

Code: Select all

Jan 1 00:00:09 netonix: 1.4.3rc4 on WS-8-150-AC
Aug 10 15:09:33 switch[1334]: 3V is out of range (3.1V)


48V fluctuates about 4V
24V as much as 5 or 6
3V runs between 3.1 and 3.5

[sirhc]

This could be an indication that:

1) The switch is not getting enough watts
2) There is a grounding issue - read this post viewtopic.php?f=17&t=1786&start=30#p13447
3) The switch is damaged or faulty

[jakematic]

Getting a pretty solid 123.2V at 59.9Hz in - just checked again.

Pretty sure grounding is OK, it's tests fine at the receptacle.
There is no tower involved - in a garage with a few UBNT cams/devices.

It's been in service just shy of a month, but don't recall these alerts happening the first couple weeks.

Have more coming.
Want me to plug another one in (along side) to see if it has the same alerts ?

[sirhc]

Getting a pretty solid 123.2V at 59.9Hz in - just checked again.

OK that is not telling you how many DC watts the switch is getting that is telling you how many AC volts your power adapter is getting.
How are you powering this WS-6-MINI, what adapter?

Pretty sure grounding is OK, it's tests fine at the receptacle.
There is no tower involved - in a garage with a few UBNT cams/devices.

OK if there is no tower involved then there is no ground potential difference so probably not that/

It's been in service just shy of a month, but don't recall these alerts happening the first couple weeks.

Older firmware did not really tell you if there was problem like this, something put into recent firmware.
Put the latest rc version on just for good measures.

Want me to plug another one in (along side) to see if it has the same alerts ?

I would say swap the unit out with another unit and see yes.

[jakematic]

OK that is not telling you how many DC watts the switch is getting that is telling you how many AC volts your power adapter is getting.
How are you powering this WS-6-MINI, what adapter?

Apologies - didn't notice this thread is for WS-6-MINI.
Switch in question is a WS-8-150-AC

Older firmware did not really tell you if there was problem like this, something put into recent firmware.
Put the latest rc version on just for good measures.

Upgraded to 1.4.2 before it went into service, and it was alerting with that version

I would say swap the unit out with another unit and see yes.

Will do.