Paradyne 8820-S2-903 Wiring the PEM, Handling Precautions For Static-Sensitive Devices

Wiring the PEM

HANDLING PRECAUTIONS FOR

!STATIC-SENSITIVE DEVICES

This product is designed to protect sensitive components from damage due to electrostatic discharge (ESD) during normal operation. When performing installation procedures, however, take proper static control precautions to prevent damage to equipment. If you are not sure of the proper static control precautions, contact your nearest sales or service representative.

Each PEM is equipped with an internal 35 amp (Model 8820-S2-903) or 40 amp (Model 8820-S1-906) circuit breaker. Two separate, unswitched, individually fused power sources, each capable of safely handling this load, are required for power redundancy.

The PEMs require 8 AWG wire for their power connections. If stranded wire is used, do not solder–coat the ends of the wires as this could weaken the connections.

Although power may be connected to the front of the PEMs, it is recommended that these connections be made at the rear of the chassis. Either way will work, but all power inputs must be made either to the front or to the rear of the chassis, not both.

NOTE:

Both PWR A and PWR B must be powered, else the management card alarm will be activated.

CLOCK	SERIAL	AC
A	MCC	ALARM	2	4	6	8	LANA/WAN S1L0OT
									12	14	16	18
CLOBCK	SSEMRCIAML ALARM		1	3	5	7	9	B	11	13	15	17

APEM

BPEM

PEM

Circuit

Breaker

RTN	POWER ENTRY MODULE
	LEFT UNIT: LINE A
48V	RIGHT UNIT: LINE B
	O
WARNING! POWER MUST BE DISCONNECTED
BEFORE REMOVING OR INSTALLING THIS PWR

NEG48V

AT THE SOURCE ENTRY MODULE

00-15326a-02

Figure 2. PEM with Internal Power Terminals

2 October 2004 8820-A2-GZ45-20