Table 2 Scc Control Contacts With Maintenance Bypass; Table 3 Scc Control Contacts To Remote Alarm Status Panel - Emerson Liebert NXL Installation Manual

Table 2 SCC control contacts with maintenance bypass
Item
Maintenance
Isolation Breaker
(MIB) Form C
Maintenance Bypass
Breaker (MBB) Form C
Maintenance Bypass
Enable Form C
Remote EPO Input
1
Key Status Input Form C
Module Output Breaker
(MIB) Form C
Rectifier Input Breaker
(RIB) Form C
Bypass Input Breaker
(BIB) Form C
1. Key Status Input can be either Form-C, N.O. or N.C. contact
Table 3 SCC control contacts to remote alarm status panel
Terminal
Item Block
CAN Bus and 24V
TB0829
Power Supply
Terminal
Block Pin (Description of External Item)
1 CB aux. contact, closed = CB is closed
TB0811 2 CB aux. contact, common
3 CB aux. contact, closed = CB is open
1 CB aux. contact, closed = CB is closed
TB0813 2 CB aux. contact, common
3 CB aux. contact, closed = CB is open
Maintenance Bypass Cabinet,
1
closed = load not on inverter
TB0821 2 Maintenance Bypass Cabinet, common
Maintenance Bypass Cabinet,
3
closed = load on inverter
1 REPO Switch, normally open contact
TB0825
2 REPO Switch, common contact
1 Key status switch, closed = key removed
TB0820 2 Key status switch, common
3 Key status switch, closed = key inserted
1 CB aux. contact, closed = CB is closed
TB0815 2 CB aux. contact, common
3 CB aux. contact, closed = CB is open
1 CB aux. contact, closed = CB is closed
TB0810 2 CB aux. contact, common
3 CB aux. contact, closed = CB is open
1 CB aux. contact, closed = CB is closed
2 CB aux. contact, common
TB0812
CB or Switch aux. contact,
3
closed = CB or switch is open
Connects to
Pin (Description of External Item)
1 Remote Status Panel TB-2
2 Remote Status Panel TB-1
3 Remote Status Panel TB-3
4 Remote Status Panel TB-4
7
Control Cable Connections and Communication
Connects to
Wire Size/
Max Length
18AWG/1000ft.
(300m)
® ™
Liebert NXL System Control Cabinet
Wire Size/
Max Length
14AWG/500ft.
(150m)
14AWG/500ft.
(150m)
14AWG/500ft.
(150m)
14AWG/500ft.
(150m)
14AWG/500ft.
(150m)
14AWG/500ft.
(150m)
14AWG/500ft.
(150m)
14AWG/500ft.
(150m)