Connecting Communication Wiring - Bennett 3700 Series Installation Manual

Connecting Suction Pump Motor Power
for Suction (Self Contained) Pump Dispensers cont...
Product "A" Suction Pump Motor Control (120VAC / 240VAC) - Connect the Blue 14ga. L1 - 120 or
240VAC (HOT) wire from the second motor power circuit breaker to terminal 4 of TS2 on the CPU
board. Connect the White 120VAC Neutral or the Black L2 240VAC wire from the motor power circuit
breaker directly to the pump motor neutral wire. Please refer to the Wiring Diagram located in the Wiring
Section of this manual or on the USB provided.
Product "B" Suction Pump Motor Power (120VAC / 240VAC) - Connect the Red 14ga. L1 - 120 or
240VAC (HOT) wire from the first motor power circuit breaker to terminal 4 of TS2 on the CPU
Connect the White 120VAC Neutral or the Black L2 240VAC wire from the motor power circuit breaker
directly to the pump motor neutral wire.
Note: Select the Submerged Pump control or Suction Pump control by setting a jumper wire on the
CPU. Make sure that there is NO jumper from P1 to P2 on the CPU board if controlling a
suction pump motor. This will be set at the factory.
3-Phase Suction Pump Motor Control (380VAC) - Connect the Brown 14ga. L1 - 380VAC (HOT) wire
from the first motor power circuit breaker directly to the 3-phase contactor relay or to TS2 terminal L1 on
the Contactor Board. Connect the Orange 380VAC (HOT) wire from the first motor power circuit breaker
to the 3-phase contactor relay or to TS2 terminal L2 on the Contactor Board. Connect the Yellow 14ga.
L3 - 380VAC (HOT) wire from the motor power circuit breaker directly to the 3-phase contactor relay or
to TS2 terminal L3 on the Contactor Board.
Note: Motors are 380VAC 50hz. Connections on factory supplied 3-phase contactor (relay).
Connecting the Communication Wires
For RS 485 Communication - For the RS-485 communication wires, use 18 gauge, twisted wires at
3 twists per foot. Refer to the RS-485 Wiring Diagram in the wiring section of the manual. Connect the
RS485 communication wires to TS1 on the CPU as follows:
RS 485 Positive (+) to TS1 Terminal 5 on the CPU Board.
RS485 Negative (-) to TS1 Terminal 7 on the CPU Board.
RS 485 Common (com) to TS1 Terminal 6 on the CPU Board.
For Bennett Current Loop Communication Protocol
For these communication wires, use 18 gauge. Connect the current loop communication wires to TS1 on
the CPU as follows:
Current Loop Positive (+) to TS1 Terminal 7 on the CPU Board.
Current Loop Negative (-) to TS1 Terminal 5 on the CPU Board.
-
Note - Current Loop wiring CANNOT be
"daisy chained" so there should be two
separate current loop wires for each product /
hose position.
47
board.
120001 Rev K 1-19-18