Specifications

Chapter 1 Overview Installation and Operation Manual
1-6 Physical Description DXC-100PSX
Figure 1-2. DC Power Supply Module
DPS/DC
+
-
DC POWER
Each DC Power Supply Module has a single connector (with 3mm screw down
terminals) to interface to the -48VDC external power source(s). Terminal polarity
labeling is provided on the rear faceplate.
This connector is identical to that utilized on the DXC-100 chassis DC power
input.
Protection Switch Controller Module, DNC
The PSX Controller Module is used to manage the N+1 Protection switch, as well
as connect it to the controlling DXC-100 resident System Manager (DSMC.2) or
DXC-100 Expansion Node Manager (DXNM) Rear Card. It also manages the
DXC-100PSX fan assembly and relay interface operations. The controller module
is fail-safe so that if it stops operating due to a fault (such as loss of power or its
removal), the DXC-100PSX resident latching relays will maintain their positions in
a non-disruptive manner.
For the DXC-100 stack configuration, a DSMC.2 (DXNM) interface module must be
installed in each DXC-100 nest in order to connect the PSX Controller Module to
the DXC-100 nest.
The DXC-100PSX supports a single controller module that is installed in the
allocated slot; one controller module is required per nest. There is no provision
for redundancy of the PSX controller since the system itself is fail-safe in that
latching relays are employed. This means that the configuration prior to a
potential controller failure will be maintained.
Thumbscrews are provided at the top and bottom of the faceplate to secure the
module in the chassis and to make an electrical connection to frame ground for
regulatory emission compliance. See
3 Figure 1-3 for an illustration of the
Controller Module panel.
Note
Note