Emerson Liebert NXL User Manual

UPS Electrical Installation
11
Table 2 UPS control contacts with battery cabinet or module battery disconnect
Item
Terminal
Block Pin
Connects to
(Description of External Item)
Wire Size/
Max Length
CAN Bus and
24V Power
Supply
TB1154A
1 Battery Interface Board TB1154-1
18 AWG
1000ft.
(300m)
2 Battery Interface Board TB1154-2
3 Battery Interface Board TB1154-3
4 Battery Interface Board TB1154-4
Table 3 UPS control contacts with global maintenance bypass
Item
Terminal
Block Pin
Connects to
(Description of External Item)
Wire Size/
Max Length
Maintenance
Isolation Breaker
(MIB) Form C
1
TB0811
1 CB aux. contact, closed = CB is closed
14AWG/500ft.
(150m)
2 CB aux. contact, common
3 CB aux. contact, closed = CB is open
Maintenance Bypass
Breaker (MBB) Form C
1
TB0813
1 CB aux. contact, closed = CB is closed
14AWG/500ft.
(150m)
2 CB aux. contact, common
3 CB aux. contact, closed = CB is open
Maintenance Bypass
Enable Form C
1
TB0821
1
Maintenance Bypass Cabinet,
closed = load not on inverter
14AWG/500ft.
(150m)
2 Maintenance Bypass Cabinet, common
3
Maintenance Bypass Cabinet,
closed = load on inverter
Remote EPO Input
1
TB0825
1 REPO Switch, normally open contact
14AWG/500ft.
(150m)
2 REPO Switch, common contact
Key Status Input
Form C
1, 3
TB0820
1 Key status switch, closed = key removed
14AWG/500ft.
(150m)
2 Key status switch, common
3 Key status switch, closed = key inserted
Module Output Breaker
(MOB) Form C
2
TB0815
1 CB aux. contact, closed = CB is closed
14AWG/500ft.
(150m)
2 CB aux. contact, common
3 CB aux. contact, closed = CB is open
1. For 1+N systems with a maintenance Bypass, these auxiliary contacts must be run to each module from an isolated source.
2. For 1+N systems, these breaker Aux contacts go to the UPS that they are associated with.
3. Key Status Input can be either Form-C, N.O. or N.C. contact
Table 4 UPS control contacts to remote status panel
Item
Terminal
Block Pin
Connects to
(Description of External Item)
Wire Size/
Max Length
CAN Bus and 24V
Power Supply
TB0829
1 Remote Status Panel TB-2
18AWG/1000ft.
(300m)
2 Remote Status Panel TB-1
3 Remote Status Panel TB-3
4 Remote Status Panel TB-4

Emerson Liebert NXL Specifications

General

Brand	Emerson
Model	Liebert NXL
Category	UPS
Language	English