Gasboy CFN Series Diagnostic Manual - Manual (Page 191)

12/26/02 6-1
Section 6
PUMP CONTROL UNIT
DESCRIPTION
The GASBOY Pump Control Unit (PCU) controls most mechanical pumps and some electronic
pumps. The unit is controlled by a microprocessor and communicates to the GASBOY site
controller via the RS-485 loop.
Each pump control unit can control up to four pumps or dispensers. There are two different
versions of the pump control unit: the retail version (Weights & Measures) and the fleet version.
Hardware features on the retail version include a battery backup, three solid state relays for each
pump or remote dispenser (slow flow, fast flow and submersible pump), manual override
switches, and diagnostic capabilities. The fleet version does not have a battery backup, and has
only two solid state relays for each pump and remote dispenser. The PCU can handle a
maximum of 30,000 pulses per minute per hose (assuming a 50% duty cycle pulse).
The unit can be ordered mounted in a wall-mount box (standard), in the island card reader's post,
or as a standalone unit to be mounted on the island.
Chassis Layout, Wall-Mount or Post Mount