3
9. Reattach the terminal block by sliding it onto the
NCC-2F card edge and install the two screws. This
is a keyed connection and will only install one way.
10. After the NCC-2F is installed, install the NCC-2F
drivers following the instructions in the
Driver
Installation
section of this document.
ELECTRICAL CONNECTIONS
Network (XNET)
The XNET connections are made on terminals 1-4 of the
terminal block on the rear of the NCC-2F. The primary
pair (or network A) is on terminals 1 and 2. The second-
ary pair (or network B) is on terminals 3 and 4.
For Style 4
networks,
install a 120 ohm EOLR on ter-
minals 3 and 4. See Figure 4 for wiring details.
For Style 7 networks,
connect to both the primary and
secondary pairs. See Figure 4 for wiring details.
Network (HNET)
The HNET connections are made on terminals 1-4 of the
terminal block on the rear of the second NCC-2F. The
primary pair (or network A) is on terminals 1 and 2. The
secondary pair (or network B) is on terminals 3 and 4.
Install a 120 ohm EOLR on terminals 1 and 2, and on
terminals 3 and 4.
For Style 4
networks,
connect only the primary pairs.
See Figure 5 for wiring details.
For Style 7 networks,
connect to both the primary and
secondary pairs. See Figure 5 for wiring details.
Network (HNET-VNT)
For Style 4
networks,
connect only the primary pairs.
See Figure 6 for NCC-2F HNET-VNT connections.
For Style 7 networks,
connect to both the primary and
secondary pairs. See Figure 6 for wiring details.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
SEE NOTE 7
(MUST BE IN SAME ENCLOSURE AS THE PMI)
DO NOT USE
DO NOT USE
DO NOT USE
DO NOT USE
ONE SLOT OF CC-5
NIC-C
1
2
3
4
5
PAIR A
SUPERVISED
POWER LIMITED
PAIR B
(OMIT FOR STYLE 4)
SUPERVISED
POWER LIMITED
LOCATED INSIDE NCC/
DESIGO CC/VNT
NOTE:
IF THE NCC/DESIGO CC/VNT
IS LOCATED AT THE END OF THE
XNET NETWORK, INSTALL EOLR
P/N 140-820350 ACROSS
TERMINALS 1 & 2 AND 3 & 4.
NCC-2F
MOM-4
TB3 OR TB4
NIM-1R / NIM-1W
1
2
3
4
TO ADDITIONAL
NIM-1Rs, NIM-1Ws,
NCC-2Fs OR NIC-Cs
Figure 4
NCC-2F XNET Connections
Refer to Wiring Specification for MXL, MXL-IQ
and MXLV Systems, P/N 315-092772 revision
6 or higher, for additional wiring information.
NOTES:
1.
No EOLR required for NIC-C.
2.
The screw terminals can accommodate one 12-24AWG or two 16-
24AWG.
3.
From the NCC-2F to NIM-1R, NIM-1W or NCC-2F:
80 Ohms max. per pair.
Unshielded twisted pair - .5
μ
F line to line
Shielded twisted pair - .3
μ
F line to line, .4
μ
F line to shield
4.
From the NCC-2F to NIC-C:
2000 feet (33.8 ohms) max. per pair between CC-5s/CC-2s.
Unshielded twisted pair
.25
μ
F max. line to line
Shielded twisted pair
.15
μ
F max. line to line
.2
μ
F max. line to shield
5.
Use twisted pair or twisted shielded pair.
6.
Terminate shields at one end only.
7.
Power limited to NFPA 70 per NEC 760.
8.
CC-5 terminals 9 - 14 are not connected and can be used to tie shields
together.
9.
Positive or negative ground fault detected at <10K ohms on pins 3-4,
7-8 of the NIC-C.
10.
Each pair independently supervised.
11.
Maximum voltage 8V P-P.
12.
Maximum current 75mA during message transmission.
