DP
O
E™
Power System User Manual
Part Number: PN380C
TEST AND TURN-ON
Once all AC and DC connections have been secured and checked, install each rectifier sequentially by
sliding and latching it into the chassis as illustrated in the section below.
Rectifiers
The rectifiers for use in the
DP
O
E™
Power System are equipped with Light Emitting Diodes (LEDs) on
the front panel as a means to indicate problems with that specific rectifier. The rectifiers are designed as
modular, field replaceable units.
Power Up
Plus all AC power cords into an appropriate Power Supply Unit (PSU), or Uninterruptible Power Supply
(UPS).
In the event that a rectifier needs to be removed, press the latch button on the front of the rectifier to
release the latch handle. Pull the latch handle until the rectifier clears the rear connector on the chassis,
then gently slide it out of the rear connector. With the latch handle open on the replacement rectifier, slide
the rectifier in until it connects with the backplane. While pressing the latch button down, use the latch
handle to gently ease the rectifier into the rear connector. When the rectifier is properly seated, releasing
the latch button will hold the latch handle in place.
WARNING:
The latch handle must be open for installation or removal of a rectifier. Attempting
to install a rectifier with the latch handle closed will result in mechanical damage to
the rectifier and the
DP
O
E™
Power System chassis.
The rectifier will power up and configure itself. It will start in high fan speed mode and reduce the speed
according to the ambient and plant conditions within 10 seconds.
Latch Handle (in
Open Position)
Latch Button
LEDs (AC OK,
DC OK, ALM)
Figure 13: Installing or Removing Rectifiers
Short Circuit and Current Limit
I
Limit
can be adjusted up to +105% of the rated current of the rectifier. The system voltage will remain
constant up to I
Limit
at which point the system voltage will drop quickly toward 0 VDC. Once a 48V rectifier
output drops below 12 VDC for more than 5 seconds, the system will shut down. The system will
automatically restart after 60 seconds, and will continue until the short circuit is cleared.
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