Cisco Systems AS5850 manual Pin Description, Idp

Chapter 1 Cisco AS5850 Product Overview

Field-Replaceable Units

Table 1-11 PEMF MBUS Connector Pin Definitions

Pin	Description
1	Breaker enable
2	5.15 voltage sense to backplane
3	5.15 current sense, between PEMFs
4	5.15 voltage sense return, to backplane
5	ID_P
6	ID_0
7	5.15 volt return, main bus return from backplane
8	5.15 volt return, main bus return from backplane
9	5.15 volt return, main bus return from backplane
10	1.60 volt main power to backplane (2 amps)
11	Mbus_B_H, DATA
12	Mbus_B_L, DATA
13	Return line from pin 1
14	open
15	open
16	48 volt monitor to mbus (not backplane)
17	48 volt current monitor to mbus (not backplane)
18	1.60 volt current monitor, internal to PEMF
19	5.15 volt / 15 amp peak
20	5.15 volt
21	5.15 volt
22	1.6 volt return (2 amp)
23	Mbus_A_H, DATA
24	Mbus_A_L, DATA

•Voltage level and current monitoring

The DC-input power supply is designed to prevent any energy hazard during operation. DC power is first routed to a circuit breaker, followed by a surge protector. In addition, an isolation diode circuit protects against possible DC-input failure.

The DC-input power supply monitors analog output voltage and current. The battery side of the DC input is equipped with a 60A circuit breaker, which trips if current reaches peak parameters for

2 seconds. The DC-input power supply circuits are described in Table 1-12.

If a PEMF is not properly seated in the Cisco AS5850 backplane, an electronic circuit, or interlock, trips a breaker in the PEMF and terminates power to the output connectors. This same interlock provides reverse polarity protection when the system is powered off.

	Cisco AS5850 Universal Gateway Hardware Installation Guide
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