Gasboy Atlas 9852K, Installation Instructions Manual, Page: 1 / 8

MDE-5151 Direct Pulse Out Option Installation Instructions for Atlas™ 9852K/9853K Pumps/Dispensers · March 2014 Page 1
Introduction
Purpose
This manual provides instructions for installing the Direct Pulse Out Interface Board
(M13949A001), which allows the pumps/dispensers to use both RS-485 and pulse out
interfaces for Atlas
™
9852K and 9853K pumps/dispensers. This direct pulse out interface
board will only work with the Atlas 9852K or 9853K models and will not work with any other
model. This pulse output provides a DC output to indicate the quantity dispensed. The pulse
rate can be configured by a jumper setting for the rates of 1, 10, 100, 250, or 500 pulses per
gallon.
The output is an open collector transistor output capable of sinking up to 100 milliamps DC at
voltages up to 24 VDC. The DC ground for the circuit comes from the Fuel Management
System (FMS). Since the transistor switches between ground and high-impedance, the
installer must provide a voltage reference when the transistor is in the high-impedance state.
This reference voltage is provided by a pull-up resistor installed at the FMS between the pulser
input and the reference voltage. The value of this resistor is calculated based on the voltage
and current requirements of the FMS pulser circuit.
Table of Contents
Topic Page
Introduction 1
Important Safety Information 3
Before You Begin 5
Installing Direct Pulse Out Interface Board 6
Required Tools
Following tools are required for installing the direct pulse out interface board for the Atlas
9852K and 9853K pumps/dispensers:
• Phillips
®
Screwdriver
• Pliers
Related Documents
Document
Number
Title GOLD
SM
Library
MDE-4331 Atlas Fuel Systems Installation Manual Gasboy
®
Atlas Pumps/Dispensers
PT-1949 Gasboy Atlas Pump and Dispenser Illustrated Parts
Manual • Gasboy Atlas Pumps/Dispensers
• Parts Manual
MDE-5151
Direct Pulse Out Option Installation Instructions
for Atlas
™
9852K/9853K Pumps/Dispensers
March 2014