BAC-9000 Series Controller Installation Guide
5 921-019-01F
see
Planning BACnet Networks
(Application Note AN0404A)
.
NOTE:
The EOL switch is shipped from the
factory in the OFF position.
3. If the controller is at either end of a BACnet
MS/TP network (only one wire under each
terminal), turn the
EOL
switch
24
to
ON
.
24
CONNECT POWER
NOTE:
Follow all local regulations and wiring
codes.
1. Connect a 24 VAC, Class-2 transformer to
the
black power terminal block
25
of the
controller.
A. Connect the neutral side of the transformer
to the controller’s
common terminal
⊥
26
.
B. Connect the AC phase side of the
transformer to the controller’s
phase
terminal
∼
27
.
26
27
25
NOTE:
Connect only one controller to each
transformer with 12–24 AWG copper
wire.
NOTE:
Use either shielded connecting cables
or enclose all cables in conduit to
maintain RF emissions specifications.
NOTE:
Also on the newer models, the Room
Sensor port is
yellow
22
instead of
black to help differentiate it from the
black Ethernet ports.
22
21
NOTE:
The Ethernet patch cable should be
T568B Category 5 (or better) and a
maximum of 328 feet (100 meters)
between devices.
CONNECT (OPTIONAL) MS/TP NETWORK
1. For a BAC-9001 or BAC-9021, connect the
network to the gray
BACnet MS/TP
network
terminal block
23
.
NOTE:
Use 18 gauge AWG shielded twisted
pair cable with maximum capacitance
of 51 picofarads per foot (0.3 meters)
for all network wiring (Belden cable
#82760 or equivalent).
23
A. Connect the
–A
terminals in parallel with
all other
–A
terminals on the network.
B. Connect the
+B
terminals in parallel with all
other
+B
terminals on the network.
C. Connect the
shields
of the cable together
at each device using a wire nut or the
S
terminal in KMC BACnet controllers.
2. Connect the cable shield to a good earth
ground at
one end only
.
NOTE:
For principles and good practices
when connecting an MS/TP network,
