BAC-9300 Series Controller Installation Guide
4 925-019-02G
CONNECT POWER
NOTE:
Follow all local regulations and wiring
codes.
1.
Connect a 24 VAC, Class-2 transformer to the
black power terminal block
of the controller.
A. Connect the neutral side of the transformer
to the controllers
common terminal
⊥
17
.
B. Connect the AC phase side of the
transformer to the controllers
phase
terminal
∼
18
.
18
17
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:
For more information, see
Sample
(BAC-9311) Wiring on page 7
and the
YouTube video
KMC Conquest Wiring:
BAC-9300 Series Unitary Controllers
.
POWER AND COMMUNICATION STATUS
The
status LEDs
indicate power connection and
network communication. The descriptions below
describe their activity during
normal operation
(at
least 5 to 20 seconds
after
power-up/initialization
or restart).
NOTE:
If both the green READY LED and the
amber COMM LED remain OFF, check
the power and cable connections to the
controller.
CONNECT (OPTIONAL) MS/TP NETWORK
1.
For BAC-93x1/93x1C models (only), connect
the BACnet network to the
gray BACnet MS/
TP terminal block
15
.
15
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).
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,
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 the
terminals), turn the
EOL
switch
16
to
ON
.
NOTE:
For more information, see
Sample
(BAC-9311) Wiring on page 7
and the
YouTube video
KMC Conquest Wiring:
BAC-9300 Series Unitary Controllers
.
16
