Lonworks® Communication Modules; Rs-232 Connection Port; 15 Vdc Supply Connection - McQuay MicroTech II Installation And Maintenance Manual

protocol with a conformance level of 3. The MicroTech II
Vertical Self-Contained Unit Controller meets the
requirements of ANSI/AHSRAE 135-2001 standard for
BACnet systems.
For a detailed description and troubleshooting information
regarding this communications card, refer to installation and
maintenance bulletin IM 704, MicroTech II BACnet MS/TP
Communications Module. For details regarding BACnet
protocol data, refer to engineering data document, ED
15061, MicroTech II Protocol Information Data for Vertical
Self-Contained Units.
A unit equipped with an optional BACnet MS/TP
Communication Module is connected to a BACnet MS/TP
network through terminals 128 (+), 129 (-) and 130 (REF) on
terminal block TB2 in the main control panel. These
terminals are factory wired to the BACnet MS/TP module
when the module is factory installed. When the module is
field-installed, the add on communication card kit includes a
wiring harness to be installed between terminals 128, 129
and 130 and the BACnet MS/TP module. This connection is
shown schematically in Figure 3.
®
L W Communication Modules
ON ORKS
A L W Communication Module can be plugged into
ON ORKS
the MCB in the port location shown in Figure 2 on page 6.
This card provides L W
ON ORKS
capability to the MCB. It is a plug-in module that can be
attached to the MCB via a 12-pin header, and includes 4
locking stand-offs to securely attach it to the board.
For a detailed description and troubleshooting information
regarding this communications module, refer to installation
and maintenance bulletin IM 702, MicroTech II L
Communications Module. For details regarding L
protocol data, refer to engineering data document, ED15
061, MicroTech II Protocol Information Data for Vertical
Self-Contained Units.
There are two versions of this module available. One is the
L M Space Comfort Controller (SCC)
ON ARK
Communications Module and the other is the L
Discharge Air Control (DAC) Communications Module.
Space Comfort Control (SCC) Module.
Controller (SCC) Communication Module supports the
L M Space Comfort Controller (SCC) profile Number
ON ARK
8500.
Discharge Air Control (DAC) Module.
Controller (DAC) Communication Module supports the
L M Discharge Air Controller (DAC) profile Number
ON ARK
8610.
A unit equipped with an optional L
Controller (SCC) Communication Module or L
Discharge Air Controller (DAC) Communication Module
can be connected to a L W
ON
128 (A), 129 (B) on terminal block TB2 in the main control
panel. These terminals are factory wired to the module when
the module is factory installed. When the module is
McQuay IM 710-1
network communication
W
ON ORKS
W
ON ORKS
M
ON ARK
The Space Comfort
The Discharge Air
W Space Comfort
ON ORKS
W
ON ORKS
network through terminals
ORKS
field-installed, the add on communication module kit
includes a wiring harness to be installed between terminals
128 and 129 and the module. This connection is shown
schematically in Figure 3.

RS-232 Connection Port

A PC loaded with MicroTech II Service Tool software can be
connected directly or via a telephone modem to the RS-232
communications port located on the bottom edge of the
MCB. This connection is shown schematically in Figure 3.

15 VDC Supply Connection

This is an unregulated power supply. Do not use to feed
three-wire potentiometer inputs. Equipment damage can
result.
The two 15V terminals located above the analog input
terminals provide 15 VDC power. This power is not used in
the Vertical Self-Contained Controller application. This
power supply is limited to sourcing 30 mA.
CAUTION
5