Metasys UNT Series, Technical Manual

Page: 47 / 96

UNT Controller—Unitary Controller (UNT) 47
1 2 3 4 5 6
BINARY IN ANALOG INPUTS BINARY OUTPUTS
70
BINARY INPUT ANALOG INPUTS
1 2 3 4 5 6 1 2 3 4
ANALOG INPUTS
COMMON
T O
ZONE
STA T
BI NA RY OUTPUT
1 2 3 4 5 6 7 8
Z BUS
DSI
1 2 3 4 5 6
BINARY COM
1
2
3 6
5
4
Note: Since the UNT is a self-terminating device, end-of-line termination
for the N2 Bus is not required.
N2 REF
N2 -
N2 +
N2 +
N2 -
N2 REF
NCU (TB1 on
Communication
Terminal Board)
HRD
GRD SFT
GRD
N2-
N2+
REF
SFT
GRD
REF N2- N2+
n2wire-a
Figure 24: Connecting the UNT Controller to an NCM
Table 14: Terminal Locations
TB1 Terminal Function Number UNT Connection
Chassis Ground 6 None
Soft Ground 5 None
N2 Ref 4 REF
Soft Ground 3 None
N2B - 2 N2 Bus: N2-
N2B + 1 N2 Bus: N2+
N2 Wiring to the
Network Control
Module