KMC Controls BAC-9300 Series - Connect (Optional) MS;TP Network; Connect Power; Power and Communication Status

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 specications.
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