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Old Sep 24, 2011, 03:49 PM
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Steven
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United States, CT, East Hartford
Joined May 2010
504 Posts
Poweredge 6800 JD200 PS OVP Disable modification.

These are the points to set the Over Voltage Protection (OVP)

on the JD200 version of the Poweredge 6800 PSU.

Just solder a 100k resistor across this component.

It resides on the daughterboard that sits to the left of the power supply from the back.

The Over Current Protection (OCP) circuit still works with this mod.

Voltage is now adjustable up to 15.2v with pot from +12v Rtn Sense to +3.3v (pins D3 and D4)

or 15.3v with pot from +12v Sense to ground (pins D2 to C3) where OVP will kick in.

OVP is set at 15.3v with the 100k resistor.

Any less than 100k will increase the OVP to above 15.3v,

but will also increase the UVP to above 12v.

I suggest staying below 15.1v to keep everything within spec.

Tested at 110A and 15v.

Do this modification at your own risk !!

This is just one method to change the OVP. I opted not to remove any components.
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Last edited by xandrios; Feb 18, 2012 at 02:20 AM.
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