0049-1200-XXX RM16M – USER’S GUIDE 12/29/2010
Rev. C
Page 8
of
27
DC Power (RM16M VDC-R Data Shelf)
Power for the DC version of the Power Shelf (RM16M VDC-R) is provided by an incoming
power source that connects to PS1, PS2 (or both) on the back of the Data Panel (see Figure 2-4).
Facing the front of the Data Shelf, PS1 supplies the power module on the left and PS2 supplies
power to the power module on the right.
One power module is sufficient to power all 16 slots. If only one power source is available, it
can be connected to either terminal strip (PS1 or PS2) on the back of the Data Shelf, with shunt
bars installed to connect power to the opposite strip (see Figure 2-5). The bars should always be
installed if only one power source is used and must be removed if two power sources are used.
PS1 and PS2 alarms and chassis ground are connected internally. An alarm condition exists on
the alarm circuit when any operating or supply voltage is lost on either power supply. By
observing which front panel power LED is out, you can identify the faulty power supply.
Figure 2-4. Power Terminals
PS2
PS1
Figure 2-5. Example of a Single Power Source Installation
Note: COMMON is +48V
