5.4 PCM Pump Dispenser Wiring
The PCM board is used for mechanical pump control.
PCM Board Connections
The figure above shows the PCM board connections. The Low-voltage (pulser) connections are on the left-
side of the board and the High-voltage connections (hook, signal, neutral, S1 & S2) are on the right.
5.4.1 Pump/Dispenser Wiring
Follow the appropriate diagram below for the wiring of either a self-contained pump or a dispenser.
Low-voltage Connections
High-voltage Connections
GND – Ground for pulser and flow switch
In-Use – Feedback from solenoid or motor
Pulse - Pulser input
Neutral - Neutral return for In-Use signal
Flow - Flow switch or pump handle input
Relay Contacts - Reset Control
+12V – Supply for pulser
Relay Contacts - Motor Control
Doc. No.: M1900 Rev.: 8
Page 24 of 65
