Vertiv
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NetSure 502NGFB Installation Manual (Section 6009)
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Rev. Z
50
Figure 22:
External Interface Connections (cont’d from previous page, cont’d on next page)
541311 Alarm Cable
on shelf
NO
YES
BREAKER ALARM CONNECTION
CONNECT YELLOW WIRE TO:
Pin 3 of J3 on Customer Interface board
(negative side of Digital Input 2)
O-R Lead of 541311
Splice and heat shrink tubing included with 541311
In ALL Battery Disconnect Units,
connect loose end of Junper factory
connected to bottom terminal on
circuit breaker to circuit breaker
“NC (Normally Closed)”
alarm terminal.
There is NO connection to the circuit
breaker “NO (Normally Open)”
alarm terminal.
Completely remove YELLOW lead exiting top of
ALL Battery Disconnect Units and discard.
Connect separately ordered YELLOW jumper/alarm
lead (P/N 524384) to circuit breaker “C (Common)”
alarm terminals in ALL Battery Disconnect Units.
Connect remaining end per table below.
1st EXTERNAL BATTERY
DISCONNECT UNIT
2nd EXTERNAL BATTERY
DISCONNECT UNIT
3rd EXTERNAL BATTERY
DISCONNECT UNIT
Yellow Jumper/Alarm
Lead (P/N 524384)
(Ordered separately
and supplied loosed.
Must be wired
by the cusomer to
each circuit breaker
“C (Common)”
alarm terminal