Installation manual

FuelMaster
®
Installation Manual
49
What it does: if pump handle detection is not turned on and used to end a transaction, timers (No
Pulse Timeout and Pump Finish Timer) must be set to end the transaction. When timers are used to
end a transaction, they must be set to accommodate the longest fueling scenario to ensure the
transaction is completed before authorization is removed. The transaction remains authorized until the
timeout occurs. If someone finishes their transaction early and hangs the nozzle up when using timers
to end the transaction, some authorization time may be remaining for someone else to take the nozzle
down and pump fuel. The fuel pumped by the second person is incorrectly recorded against the
authorization started by the first person.
Another problem with timers ending transactions is the printing of receipts. If a customer finishes a
transaction quickly, the receipt won’t print until the timers end the transaction.
These issues may be overcome by using pump handle (or switch) detection to end the transaction.
When wired into the dispenser connection, and turned on in the FMU configuration, pump handle
detection will end the transaction as soon as the pump handle is turned off. The next person fueling
has to start their own transaction. Receipts print as soon as the handle is turned off. Hoses become
available for new transactions more quickly.
How to get it: pump handle detection for the FMU is attained from a source which provides power
when the pump handle or switch is turned on, and removes power when the pump handle is turned
off. The most common sources are a RESET COMPLETE signal in a dispenser, or the output side of a
pump switch. If the power source is 110 VAC, pump handle detection must be connected to either LN
or PHS (differences are explained below) on the Pedestal I/O Board. If the power source is 12 VDC, it
must be connected to the OK positions on the pulser connectors J4-J7 on the Pedestal I/O Board.
After a wiring connection is made, an FMU configuration setting must be made to turn on pump handle
detection. Pump handle detection settings differ between FuelMaster
®
classic and Plus FMUs. Pump
handle detection in DoD systems functions the same as in classic systems. In classic and DoD
systems, pump handle detection has two settings, YES and NO. When set to YES, detection must be
present when the handle is turned on and must go away when the pump handle is turned off. For a
YES setting, pump handle detection must be wired into the appropriate LN position: LN1 for hose 1,
LN2 for hose 2, etc. The NO setting has no detection at any time.
In the FuelMaster
®
Plus systems, there are four pump handle detect settings: START ONLY, START
AND END, END ONLY, and NONE. START ONLY detects the pump handle or switch only when it is
turned on. It disregards the turn off at the end of the transaction. START AND END is the same as
YES in the classic and DoD systems. It detects the pump handle being turned on at the beginning of
the transaction, and turned off at the end of the transaction.
YES, START ONLY, and START AND END pump handle detect settings require the pump handle to
be off with no power to the FMU LN positions when the transaction is started. The user is prompted to
TURN ON PUMP HANDLE TO DISPENSE THE SELECTED PRODUCT after responding to the FMU
prompts. When the pump handle is turned on, power is applied to LN, the applicable relay is
energized, then authorization power is sent from LD to the dispenser. YES and START AND END will
end the transaction when the pump handle is turned off.
What if I have a constant hot or neutral on LN?: if there is a constant hot or neutral on LN, LN
cannot be used for pump handle detection. This does not mean pump handle detection must be
turned off. It just means pump handle detection cannot be detected on LN.
Pump handle detection may be transferred to a PHS position on terminal strip TB3 on the Pedestal I/O
Board for pump handle detection only at the end of a transaction. PHS is only used for pump handle
detection. It cannot be used as an input to the relay assemblies, and a subsequent output from LD.
Pump handle detection is transferred from LN to PHS by wiring pump handle detection into the
appropriate PHS position (PHS1 for hose 1, PHS2 for hose 2, etc.), and cutting one leg of the resistor
at R92 (for hose 1, R93 for hose 2, R94 for hose 3, etc.) between the automatic/manual mode switch
receptacles on the Pedestal I/O Board. One leg only is cut so the resistor remains available should it
be necessary to reuse it.
This is a situation where END ONLY is used. The END ONLY setting disregards the pump handle at
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