Light neutral, Pulser - 9800/9820, Light neutral pulser - 9800/9820 – Gasboy TopKAT Fuel Management System Installation User Manual
Page 55: Caution

MDE-4319E TopKAT™ Fuel Management System Installation Manual · August 2008
Page 49
Control Lines for Gasboy 9800 or 9820 Electronic Pumps/Dispensers
Mechanical Interface Option
Light Neutral
The Light Neutral is a return line for AC current from the lights to the breaker panel. When a
separate breaker is not used to control the lights, the light neutral is attached to the Micro
Neutral.
Pulser - 9800/9820
The TopKAT Pump Control Printed Circuit Board (PCB) must be set for electronic pulser (100:1
or higher) as shown in
. Failure to set the Pump Control PCB
jumpers properly will damage the TopKAT.
CAUTION
When a 9800 Series dispensing unit is wired to the TopKAT using the mechanical interface,
the dispensing unit must include the optional pulser interface PCB (C06425, M05158A001,
M05158A002, and M06587A001) 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, or 500 pulses per gallon or 1,
10, or 100 pulses per liter. For the 9850 pump, the pulse rates are 1, 10, or 100 pulses per
gallon or 1 or 10 pulses per liter. For 9840K (liters), the pulse rate is 10 pulses per liter. An
additional output is provided for a twin. A DC ground line from the TopKAT must be
connected to the DC ground line provided from the electronic register.