AFR200 Series, Product User Guide
This document is subject to change without notice.
Caution: None of GAC products are flight certified controls including this item
Copyright © 2010, Governors America Corp., All Rights Reserved
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PUG4144 D
1 Introduction
The Air Fuel Ratio (AFR) 200 series controller provides a comprehensive fuel management system for gaseous-
fueled, spark-ignited engines which incorporates:
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Optimal closed loop air-fuel ratio and delivery control
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Actuator throttle body control
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A built-in engine speed governor
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Diagnostic capability
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Engine sensor and data monitoring
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CAN / serial communication
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Many optional sensor and binary inputs
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Easy configuration and customization using GAC’s SmartVU software
The system is applicable to a wide range of gaseous fueled engines ranging from 1L to 13L+. The AFR200 series
controllers when used in conjunction with the ICM200 (Ignition Control Module) series offers a complete Fuel and
Ignition Management Solution (FIMS) referred to as the FIMS500 system. Each of these controllers has the
ability to work independently of the other in the event of a failure.
The AFR200 series controller is ruggedly designed to be used in a wide variety of engine environments. The
connector, harness and cast aluminum case are all environmentally sealed to IP-67. The AFR is designed to be
highly reliable and includes protection against reverse battery voltage, transient voltages, short circuits and a loss
of engine speed sensor signal or battery supply.
A representation of the AFR controller is shown in the following figure. The AFR has one 35-pin connector and
one 14-pin connector although in some variations of the controller the 14-pin connector will be removed. This
information is covered in greater detail in the following sections.
AFR200 Controller Identification
1.1 Certifications
The AFR system is capable of supporting the strict emission regulations of both the US and Europe; standards
which most of the world follow. Once a system has been calibrated for optimal emissions results, the calibration
can be loaded into subsequent engine packages with favorable repeatability.
GAC Part
Identification Sticker
