Power Interface Modules (Pims); Location And Physical Description Of The Pims; Pim Faceplate - Nortel 15000 Hardware Description

Power interface modules (PIMs)

The power interface modules (PIMs) pass power from the breaker interface
panel (BIP) into the shelf assembly. This section provides the following
information about the PIMs:
• Location and physical description of the PIMs (page 87)
• PIM faceplate (page 87)
• PIM cable assembly (page 90)
• Power LED status indicators for PIMs (page 89)
• PIM cable assembly (page 90)

Location and physical description of the PIMs

Four power interface modules (PIMs) are located along the left side of the rear
of the shelf assembly. See the figure
Switch 15000 without fabric cards, rear view (page
Each PIM provides a point to which power cables from the BIP are connected.
Each shelf assembly contains four PIMs: two for the A power feeds and two
for the B feeds. See
(page 56)
routed to each shelf. Each PIM provides separate power filtering for the
portions of the shelf it supports. The PIMs also provide termination for the
shelf clocks and for the secondary control bus.
The PIM is a field-replaceable unit; however, the node must be powered down
from the appropriate BIP circuit breakers must be off, and the PIM power
cables disconnected, before the module can be removed.

PIM faceplate

The faceplate is the side of a power interface module (PIM) to which the power
cables from the BIP are connected. The faceplate is designed such that you
cannot remove the PIM unless the power cable is removed first. This protects
the backplane pins from arcing if the PIM is pulled with the power left on. The
figure
opening for the connection point.
The table
lists the pin assignments.
Copyright © 2005, Nortel Networks
- 87 -
Shelf assembly
Function of the BIP backplane power input connections
for more information about how input power feeds from the BIP are
Faceplate of a PIM on a Multiservice Switch 15000 (page 89)
Pin description for the PIM faceplate power connector (page 88)
Nortel Networks Multiservice Switch 15000/20000
Hardware Description
NN10600-120 sPCR6.1S1 Standard
sPCR6.1 February 2005
A shelf assembly of a Multiservice
69).
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