Bennett 621 Interconnection Box Instruction & Service Manual
Product Introduction
6
TS2 - TS5 (POSITIONS 1-8) DISPENSER COMMUNICATION
Terminal blocks TS2 through TS5 are labeled as (Positions 1 - 8) that are used for Fueling Points 1 through 16. Each terminal strip position will
supply two fueling points one (+) positive and one (–) negative connection.
Note:
A fueling point is one side of a dispenser and a two-sided
dispenser would have two fueling points.
TS6 - TS7 (POSITIONS 9-12) DISPENSER COMMUNICATION
Terminal block TS6 - TS7 (Positions 9-12) are used for Fueling Points 17 through 24. Each terminal strip position will supply two fueling positions
one (+) positive and one (–) negative connection.
Note:
A fueling point is one side of a dispenser and a two-sided dispenser would have two fueling
points.
TERMINAL POSITION
FUELING POINT
COLOR
PIN
9
17 & 18
Orange
(+) positive
17 & 18
Yellow
(-) negative
10
19 & 20
Orange
(+) positive
19 & 20
Yellow
(-) negative
11
21 & 22
Orange
(+) positive
21 & 22
Yellow
(-) negative
12
23 & 24
Orange
(+) positive
23 & 24
Yellow
(-) negative
13
NOT USED
Orange
(+) positive
NOT USED
Yellow
(-) negative
14
NOT USED
Orange
(+) positive
NOT USED
Yellow
(-) negative
15
NOT USED
Orange
(+) positive
NOT USED
Yellow
(-) negative
16
NOT USED
Orange
(+) positive
NOT USED
Yellow
(-) negative
LEDs
DISPENSER & POS COMMUNICATION
The 621 Circuit Board has surface mount LEDs that are used for troubleshooting. If the console and dispensers are communicating, all LED’s will be
flashing. If not communicating with the POS or Dispenser then the “Transmit” LED will be on constantly and the “Receive” LED will be off. Refer to
the troubleshooting section for more information.
TERMINAL POSITION
FUELING POINT
COLOR
DESCRIPTION
1
1 & 2
Orange
(+) positive
1 & 2
Yellow
(-) negative
2
3 & 4
Orange
(+) positive
3 & 4
Yellow
(-) negative
3
5 & 6
Orange
(+) positive
5 & 6
Yellow
(-) negative
4
7 & 8
Orange
(+) positive
7 & 8
Yellow
(-) negative
5
9 & 10
Orange
(+) positive
9 & 10
Yellow
(-) negative
6
11 & 12
Orange
(+) positive
11 & 12
Yellow
(-) negative
7
13 & 14
Orange
(+) positive
13 & 14
Yellow
(-) negative
8
15 & 16
Orange
(+) positive
15 & 16
Yellow
(-) negative
FUEL CONTROLLER COMMUNICATION
LED
FUNCTION
D1 (WT)
POS GCL Transmit
D2 (WR)
POS GCL Receive
DISPENSER COMMUNICATION
LED
FUNCTION
D3 (BT)
Bennett Transmit
D4 (BR)
Bennett Receive
