laserjet printer makes all my battery backups come on.

[GOW3]

Anytime i print it does this. I know they draw a lot of power to heat up.

 

I have a rack mount UPS and a few Cyberpower battery back ups they all trip when i print they are all on the same circuit. Nothing actually cuts off and i can't really move anything.

 

Is there any device that can help? My rack mount UPS was pretty expensive. 

 

 

[Kilrah]

Never put a laser printer on a UPS is the usual answer. You wouldn't typically abosolutely need to print during a power outage...

[Needfuldoer]

Which model LaserJet?

 

Move the printer to a different circuit that doesn't have as much plugged into it. (If you're in North America, see if you can pick a circuit that's on the other phase.) Or, you might need to have a dedicated circuit run for one of the rack UPSes.

 

4 minutes ago, Kilrah said:

Never put a laser printer on a UPS is the usual answer. You wouldn't typically abosolutely need to print during a power outage...

I think (hope) they meant the UPS was kicking in because of the momentary brownout the printer causes when it spins up. If the printer was plugged into a UPS, the UPS should shut the load off to protect itself.

[Kilrah]

Since they say they have a big rackmount UPS I don't know, could be just enough to take the hit.

If it's not the case then it's just that the circuit everything is on is overloaded, probably want to use separate ones.

[Caroline]

Laser gang here, mine makes the room's lights dim when I hit the print button, peak consumption is around 8 amps during the first second so that's probably what's causing your UPS to trip as it detects a brief anomaly, think about it as a brownout that only lasts for a second, that's enough for the UPS to trip as its response time is in the ms range.

[GOW3]

2 hours ago, Kilrah said:

Never put a laser printer on a UPS is the usual answer. You wouldn't typically abosolutely need to print during a power outage...

It is not on a UPS. My computers and servers are.

[GOW3]

1 hour ago, Caroline said:

Laser gang here, mine makes the room's lights dim when I hit the print button, peak consumption is around 8 amps during the first second so that's probably what's causing your UPS to trip as it detects a brief anomaly, think about it as a brownout that only lasts for a second, that's enough for the UPS to trip as its response time is in the ms range.

Seems to be a common complaint with laserjet printers. I need a soft start for it like they make for heat pumps.

[Caroline]

If everything trips with just one printer it means the voltage sag is large and that the circuit is already overloaded anyway. It shouldn't do that.

 

Mine makes the lights dim a bit but that's all, the UPS won't trip. Don't do this: