2
NCM Installation PN 51533:A1 03/27/03
2 Installing the NCM
2.1 Interconnecting the NCM-W
When wiring consecutive NCM-W boards, note that wiring may enter or exit at Port A or Port B as
shown in Figure 4. NCM-W port-to-port wiring is not polarity sensitive. The use of Port A or Port B is
arbitrary. An NCM-W may be connected to any of the following devices:
• MIB-W
• MIB-WF
• NAM-232W
• NCM-W (in another panel)
• NCS-W network connection
• RPT-W
• RPT-WF
For information regarding these devices, refer to the documentation listed in Table 4 “Supplemental
Documentation”.
Figure 3 The NCM-W
Table 1
NOTI•FIRE•NET™
Connections: NCM-W
Switch Functions: Ground Fault Detection and Line Termination
The NCM-W provides two sets of switches to simplify
network setup; in Figure 4 all are in the “off” position.
• Enable ground fault detection by setting
switches “on”: SW103 for Channel A, and
SW101 for Channel B.
• Activate on-board end-of-line resistors by
setting switches “on”: SW100 for Channel A;
SW102 for Channel B.
Note:
Correct configuration depends on your network
design; refer to the
NOTI•FIRE•NET™
Manual (Network Version 4.0 and Higher)
.
TB100-1
CH-A (+)
Channel-A Driver/Receiver
TB100-2
CH-A (-)
Channel-A Driver/Receiver
TB100-3
CH-B (+)
Channel-B Driver/Receiver
TB100-4
CH-B (-)
Channel-B Driver/Receiver
TB100-5
Earth Ground
B A
B A
EF B TERM B
SW
101
SW
10
2
SW
103
O
N
O
FF
EF A TERM A
SW
10
0
O
N
O
FF
EF B TERM B
SW
101
SW
10
2
SW
103
O
N
O
FF
EF A TERM A
SW
10
0
O
N
O
FF
Note:
Wiring from the NCM-W that is installed outside the building:
• Cannot exceed 1000m (3280 ft.).
• Must be in conduit and is to be buried in a trench separate from any power lines.
• Cannot cross any power lines.
From last node,
Port A
To next node,
Port B
NCM
-w-co
nn
e
x.
cd
r
EF B TERM B
SW
10
1
SW
10
2
SW
10
3
O
N
O
F
F
EF A TERM A
SW
10
0
O
N
O
F
F
n
cm-
w-switch
es.cdr
Figure 4 NCM-W Switches
