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
2 Product Variations
There are a variety of different models of the AFR 200 series depending on the features desired as shown in the
following table. Note that only the unique features are shown in the below table since the controllers share
common standard inputs and features which are covered in greater detail in follow sections.
Product Selection Table
Model
Unique Features
AFR200
1 Oxygen Sensor Input
AFR201
2 Oxygen Sensor Inputs
AFR210
1 Oxygen Sensor Input
1 Exhaust Gas Temperature Input; Type K Thermocouple
AFR211
2 Oxygen Sensor Inputs
1 Exhaust Gas Temperature Input; Type K Thermocouple
2.1 AFR Product Selection Clarification
•
Number of Oxygen Sensors: The number of oxygen sensors is either selected as one for pre-catalytic
converter (or no converter) or two (pre- and post-catalytic) if additional diagnostic capability is desired for
the catalytic converter itself.
•
Exhaust Temperature Input: The AFR has the ability to protect the engine in the event of an over-
temperature condition using a type K thermocouple sensor placed in the exhaust stream.
2.2 Standard Features
•
Optimal Closed Loop Air-Fuel Ratio and Delivery Control:
•
Actuator Throttle Body or Universal Actuator Control
•
Proprietary, Fast Responding, Non-Linear, Air/Fuel Ratio Control
•
Variable O2 Lambda Control Strategy; Engine Speed vs. Load Mapping
•
Fail-safe Open Loop Control for Initial Tuning Values and Troubleshooting
•
Industrial, Highly Accurate Stepper Motor Integrated with Venturi Mixer
•
Programmable Stepper Motor Start Position
•
Built-in Engine Speed Governor:
•
Multi PID Governing EDG™ Designed to Control Engine Speed with Precise Response to Transient
Load Changes
•
Three Fixed Speeds & One Variable Speed
•
Overspeed Shutdown Protection
•
Speed Ramping from Idle to Operation Speed
•
Starting Fuel Control for Lower Engine Exhaust Emissions
•
Full PID Adjustment Capability
