Prusa i3 printer stops heating after 100-110c

Hi fellow reprappers,

Yesterday i tried to print with abs for the first time.
When my bed is at about 100-110c (the max it seems to get) it stops heating the bed and extruder after a while.
If i disconnect and reconnect to repetier host i can heat up again and it goes fine for 20 mins and then it happens again.
I was thinking it was my power supply since the power supply fan turned on right after the "shutdown".
I used another power supply, with different cable to ramps, and the issue remains.

I dont know if this issue was always there or not since i printed pla before and had no need for such high temperatures.

Anyone with some advice?

Thanks

What type of electronics are you using? (RAMPS, etc..)

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-David

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Check out my FolgerTech Prusa i3 (plexi) at MindRealm.net

Sorry i should have posted that,

I am using ramps 1.4, 12 v power supply

Edited 1 time(s). Last edit at 02/09/2015 09:20AM by Govahnator.

A better question is what type of power supply is being used? It sounds like it may be functioning at the upper threshold of its output capacity, popping the breaker from running the heated bed at a 100% duty cycle to hold 110C.....

...or the polyfuses on the RAMPS board may be opening.

---

-David

Find me online at:
Thingiverse
Instructables.com
LinkedIn
Facebook

Check out my FolgerTech Prusa i3 (plexi) at MindRealm.net

Quote
vreihen
A better question is what type of power supply is being used? It sounds like it may be functioning at the upper threshold of its output capacity, popping the breaker from running the heated bed at a 100% duty cycle to hold 110C.....

That is what i was thinking. I have the 12 V / 360 W POWER SUPPLY aluminium case.Output:

Voltage: 12 VDC ± 5 %
Rated current: 30 A
Rated power: 360 W
Ripple & noice: 150 mV
Lad regulations: ± 1 %

The other power supply i tried is an ATX 600 W , same issue, but this one only reaches 104 max.

Edited 2 time(s). Last edit at 02/09/2015 10:54AM by Govahnator.

Is the power supply under the heated bed, where it might be overheating?????

Quote
vreihen
Is the power supply under the heated bed, where it might be overheating?????

No it is not connected to the printer in any way