Paradise Datacom 4 RU Chassis, Operation Manual

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20 201627 REV X 4 RU SSPA Chassis Operations Manual
The power supply chassis has a dual feed AC architecture.
Power module slots 0 & 1 are supplied via AC Feed 1 and
power module slots 2 & 3 are supplied via AC Feed 2.
The AC connections on the shelf are made via rear accessed
compression style terminal blocks. See
Figure 2-5
. Connect
the first line/hot to L1, the second line or neutral to L2/N and
the AC ground to GND. These terminal blocks will accept up
to a maximum of 10 AWG wire, and should be torqued to
6 in-lbs.
The power supply is connected to the SSPA via an alarm
cable, part number L205676-1, supplied with the unit. This
cable connects between the Alarm port of the power supply and the PS M&C Port
(J12) of the SSPA. See
Figure 2-6
.
Each power supply module has an alarm output. For logic reporting purposes, the
alarm outputs for power supply modules 1 and 2 are linked, as are those for power
supply modules 3 and 4. The power supply alarms are monitored by the SSPA Chassis
monitor and control system. This provides local and remote alarm reporting in the
event of a power supply module failure.
The module alarms are open-collector signals with a high impedance state = fault logic
level. Under normal operation, the alarm outputs are in an open collector logic low
state.
Figure 2-5:
Terminal block
+12VDC -12VDC
IN IN
RF OUT J2
S/N: XXXX
MODEL: XXXXXXXXXXXX
P/N: LXXXXXX-X
J1
PS M&C
J12
Figure 2-6: Power Supply Alarm Cable Connection