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Document No. 545-462
Rev. 3, June 1999
Power Module
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The Power Module (refer to Figure 1) mounts to the
mounting rails, Module Bus (M-Bus) rails, and
Communication Bus (C-Bus). It accepts 24 Vac power
from the Modular Building Controller (MBC) or
Remote Building Controller (RBC) transformer
through the C-Bus. The Power Module supplies 24
Vdc and 24 Vac power to the Point Termination
Modules (PTM) via the M-Bus rails.
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545-714 Power Module
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•MBC or RBC mounted and AC power connected
•Termination blocks installed
•All wiring terminated
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7 minutes
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1. Switch MBC or RBC power switch OFF.
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E: Only insert/remove the Power Module
with the power switch OFF.
2. Remove the temporary cover (refer to Figure 2),
which is the card with attached pre-wired BLN or
FLN trunk connectors, that is wrapped around
the mounting rails, M-Bus rails, and C-Bus.
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These connectors are terminated during the
installation of the Open Processor.
3. Remove the C-Bus cover from the lowest
available slot and discard (refer to Figure 3).
4. Remove any remaining M-Bus protective tape
from the M-Bus rails.
5. Remove warning label from the Power Module to
expose the C-Bus card and the protective cap on
the C-Bus edge connector.
6. Remove the protective cap from the C-Bus card
edge.
7. Align the Power Module (refer to Figure 3) with
the slot designation marked on the mounting rails
(for example: 1A and 1B).
8. Align the edge of the right-hand M-Bus rail with
the Power Module mounting guides positioned
as shown in Figure 4.
9. Push on the free end of the Power Module so
that its C-Bus card-edge and M-Bus connector
mate with the C-Bus connector and M-Bus rail
(refer to Figure 3). You will hear a “click” when
the Power Module is properly attached to the
mounting rail.
10. If the Power Module needs repositioning, pull the
Power Module latch. Then pull the Power Module
forward from the C-Bus connector (refer to
Figure 3) and repeat Steps 7 through 9.
11. Switch the MBC or RBC power switch ON. The
Power Module begins a power-up sequence that
lasts approximately five to six seconds. After the
power-up time has elapsed, the Power Module
should begin operating normally.
The installation is now complete.
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