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 specications.
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,
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