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Using a +24 vdc power source – Carrier Access BROADway System 770-0125-AB User Manual

Page 24

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2-8

BROADway - Release 4.00

Installation

Cabling Power and Ground

WARNING!

T

HE

BROAD

WAY

CHASSIS

DOES

NOT

PROVIDE

AUTOMATIC

POLARITY

CORRECTION

. T

HAT

IS

,

IF

YOU

ATTACH

THE

SUPPLY

WIRES

IN

THE

WRONG

ORDER

,

THE

INPUT

POWER

FUSE

WILL

BLOW

. S

PARE

FUSES

ARE

ENCLOSED

WITH

EACH

BROAD

WAY

CHASSIS

TO

HANDLE

THIS

SITUATION

.

5. After wiring the green FEED A connector, reconnect it to the back of the BROADway chassis.

6. For power redundancy, use an alternate DC power source, and wire FEED B in the same

manner as FEED A.

DANGER!

T

HIS

CHASSIS

HAS

TWO

POWER

SUPPLY

CONNECTIONS

. D

ISCONNECT

BOTH

BEFORE

SERVICING

TO

AVOID

ELECTRIC

SHOCK

.

BROADway

+24 VDC Feed

+

-

+24 VDC

RETURN

Ground at power source

Using a +24 VDC Power Source