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Control Lines for Gasboy 9800 or 9820 Electronic Pumps/Dispensers
Pulser - 9800/9820
The TopKAT Pump Control PCB must be set for electronic pulser (100:1 or higher) as shown in
"Terminal Block ID" on page
damage the TopKAT.
When a 9800 is wired to the TopKAT using the mechanical interface, the dispensing unit must
include the optional pulser interface PCB (C06425) to provide a pulse output. This pulser
output provides a DC output to indicate the quantity dispensed. This is an open collector
output. This output can sink up to 100 milliamps DC at voltages up to 24 VDC. The output
pulse rate can be configured by a DIP switch on the 9800 CPU PCB for rates of 1, 10, 100,
250, 500, or 1000 pulses per gallon or 1, 10, 100 or 250 pulses per liter. For the 9840 pump,
the pulse rates are 1, 10, 100, 250, or 500 pulses per gallon or 1, 10, or 100 pulses per liter. An
additional output is provided for a twin. A DC ground line from the TopKAT should be
connected to the DC ground line provided from the electronic register.
MDE-4319A TopKAT Fuel Managment System Installation Manual · November 2005
CAUTION
34. Failure to set the Pump Control PCB jumpers properly will
Mechanical Interface Option
Page 41
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