Metasys UNT Series User Manual

48 UNT Controller—Unitary Controller (UNT)
A hardware connection between the N2 Communications Bus and the
Companion PC/Panel/LTD is required to communicate with N2 devices.
An MM-CVT101-0 Communications Converter is required to network to
the PC Companion. See Figure 25 for terminal locations. Refer to the
Metasys Companion Technical Manual (FAN 628.1) for information
specific to the MM-CVT101 or Companion Panel/LTD.
1 2 3 4 5 6 7 8
1 2 3 4 5 6
BINARY INANALOG IN PUTS BINARY OUTPUTS
70
BINA RY INP UT
ANALOG IN PUTS
1 2 3 4 5 6 1 2 3 4
ANALOG IN PUTS
COMMON
+15VDC
TO
ZO NE
STAT
BINARY OUTPUT
24VAC
1 2 3 4 5 6 7 8
+15VDC
24VAC
REF
N2-
N2+
24VAC
COM
ZBUS
Z BUS
DSI
1 2 3 4 5 6
24VAC 24VAC 24VAC 24VAC 24VAC 24VAC
BINARY COM
n2wire-b
RS232-to-N2 Bus
Converter
(N2 Bus Terminal)
REF
N2 -
N2 +
To
Next
N2
Device
N2 REF
N2 -
N2 +
Companion PC Version
N2 +
N2 -
N2 REF
9 VDC
9 V COM
MM-CVT101-0
Figure 25: Connecting the UNT Controller to Companion
Note: For more information on installing the N2 Bus, refer to the
Application Specific Controllers Technical Manual (FAN 636.3),
the Introduction tab, the ASC and N2 Bus Networking and
Troubleshooting Guide Technical Bulletin (LIT-6363003).
The Zone Bus is a 2-wire communications bus that allows a computer to
communicate with the UNT, to download the UNT’s database, and to
communicate with the Zone Terminals and M100 actuators. A third wire
is used for 24 VAC power to the CBLPRO, Zone Terminal, and
AS-CBLCON. The bus interface sustains no damage in the presence of
fault voltages of 24 VAC or less.
M100 actuators should be powered with separate transformers; therefore,
only the Zone Bus and common wires need to be pulled.
See Table 15 for Zone Bus specifications.
N2 Wiring to
Companion
Zone Bus
Communications
Zone Bus
Description

Metasys UNT Series Specifications

General

Brand	Metasys
Model	UNT Series
Category	Controller
Language	English