ABB PM825 3BSE010796R1 controller in stock
Technical data of product parameters
This information applies to all Series 90-30 power supplies that have six–terminal PM825 3BSE010796R1
boards. The overvoltage protection devices for this power supply are connected internally
to pin 4 on the user terminal strip. This pin is normally connected to frame ground (pin 3)
with the supplied jumper strap which is installed at the factory. If overvoltage protection PM825 3BSE010796R1
is not required or is supplied upstream, this feature can be disabled by removing the
jumper strap from pins 3 and 4.
If you want to Hi-pot test this supply, overvoltage protection must be disabled during
the test by removing the terminal strip jumper strap. Re-enable overvoltage protection
after testing by reinstalling the strap.The 5V logic output is electronically limited to 3.5 amps (7 amps for high capacity supplies).
An overload (including short circuits) is sensed internally and causes the supply to shut down.
The supply will continually try to restart until the overload is removed. An internal fuse in the
input line is provided as a backup. The supply will usually shut down before the fuse blows. PM825 3BSE010796R1
The fuse also protects against internal supply faults.The timing diagram below shows the relationship of the DC input to the DC outputs and to the
Power Supply OK signal (PSOK) generated by the power supply. When power is first applied,
the PSOK signal goes false. This line remains false for a minimum of 20 msec after the +5V
bus is within specifications, then it becomes true.
If input power is interrupted, the +5V bus will remain within specifications and PSOK will
remain true a minimum of 10 milliseconds. PSOK then goes false. The +5V bus will remain
within specifications for an additional 4 milliseconds minimum to allow an orderly shutdown of
the system
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