Emerson AXP 1410, Installation And Use Manual

Page: 99 / 204

Configuring and Operating the System
AXP 1410 Installation and Use (6806800H70F)
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Power is introduced to the PEM using a DC power cable attached to the terminal blocks on the
front of the module (power input cable and return cable). The terminal block consists of a dual
stud connection which prevents the power cables from rotating and provides secure contacts
for the cable lug. There is a plastic cover that protects the cable connections.
5.5.2 IPMC Circuitry
Each PEM is capable of monitoring voltage and circuit breaker status. The PEMs are loaded with
the AdvancedTCA IPMC firmware. Preprogrammed FRU and Sensor Data Record (SDR)
information reside on the PEM and is accessible from the SAM via the IPMB ports of the PEM. In
addition, the IPMC monitoring functions include digital inputs to detect circuit breaker trips,
voltage sensors to detect backplane voltages, current sensors to detect current to the
backplane, and on-board circuitry to detect failures on the PEM. The PEMs are managed by the
Sentry Shelf Management software. Refer to
Chapter 7, FRU Information and Sensor Data
Records, on page 119 .
Figure 1-4 on page 28 provides a conceptual view of the connections between the PEMs,
backplane, FTMs, and SAMs.
The DC power inputs must only be attached to approved Telephone Network Voltage (TNV-
2) or Safety Extra Low Voltage (SELV) branch circuits. Branch circuits must comply with all
requirements called for in these safety standards: IEC 60950, EN 60950, CAN/CSA-C22.2 No.
60950. Attaching inputs to non-TNV-2/SELV approved power sources will cause the system
to fail compliance with safety regulations.
Table 5-7 PEM IPMB Addresses
Description IPMB Address
PEM A 0x66
PEM B 0x68