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5.5 Installing Communication Interfaces
5.5.3.1 Pulse Input Wires
The dispenser outputs pulses to the system by means of the pulser unit, installed in accordance
with manufacturer instructions. The pulse rate per volume (liter/gallon) is determined by the
pulser unit. It is programmed as a "factor" by the Head Office controller.
5.5.3.2 Handle Status Input Wires
The handle signal is used to signal to the system that the pump is in "In Use" mode. When the
dispenser handle is lifted this contact will close. This should signal to the system that the pump
is "In Use" or that the transaction has ended.
5.5.3.3 Authorization Output Wires
The dispenser requires an authorization signal from Islander Prime to start a sales transaction.
Without this authorization signal, the electric valve (or pump) will not open and the sales
transaction will not begin. Islander Prime switches the AC power signal to the valve. When the
dispenser receives the authorization signal, it enables the fuel flow.
5.5.3.4 MPI-C Pinouts
The following tables provide MPI-C pinout connection details, based on the Terminal Block
Map found on the power supply protective panel (see
tables are laid out as follows:
• The pin number for each cell corresponds with the pin numbers displayed in the Terminal
Block Map found on the inner wall of the Islander Prime unit.
• Each block of cells shows the channels for that configuration, as follows:
- (Green): Channel #1
- (Peach): Channel #2
- (Purple): Channel #3
- (Beige): Channel #4
Each cell defines the signal that is sent over that pin in the terminal block port.
Table 11: MPI-C Channels
PLS_V1
PLS_G1
PLS_IN1 PLS_IN2 n.c.
MDE-5411A ForeHB Islander Prime Installation Manual · October 2018
PLS_V2
CHSS
PLS_V3
PLS_G2
n.c.
PLS_G3
PLS_IN3 PLS_IN4
Table
11,
PLS_V4
CHSS
PLS_G4
n.c.
n.c.
Installation
Table
12, and
Table
13). The
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