1. Introduction
1.1 About SGC 420/421
This document presents information necessary for operating DEIF's SGC 420/421 genset controllers.
SGC 420/421 are modern and feature rich genset controllers with user friendly HMI and full graphics LCD. The controllers come with
a highly versatile software. Extensive inputs and outputs support a wide variety of industry standard features in diesel/gasoline
genset applications.
SGC 420/421 offer Site battery monitoring which significantly reduces fuel consumption. The controllers support Shelter temperature
monitoring, Auto (AMF, Remote start /stop, Cyclic and Exercise mode), Manual and Test modes.
SGC 421 includes electronic governing for engines with mechanical fuel systems. With a rotary actuator as add-on for air/fuel
charge control, SGC 421 can perform electronic governing of the engine within ISO 8528 class G3 limits.
The DEIF Smart Connect software offers flexibility to configure each individual input and output for a specific function or application.
All parameters can also be configured on the controller.
The powerful micro controller in SGC 420/421 supports a range of complex features, for example:
• LCD display
• True RMS voltage and current monitoring
• RS-485 base communication
• Monitoring of engine and alternator parameters
• Fully configurable inputs and outputs for a wide range of functions
1.2 Key functions
• Genset controller with configurable inputs:
◦ Nine digital inputs
◦ Eight analogue inputs (configurable as digital inputs)
• Seven digital outputs
• Auto (Site battery backup, AMF, Remote start/stop, Cyclic and Exercise) modes, Manual and Test modes
• Site battery monitoring
• Shelter temperature monitoring
• Mains partial healthy detection
• Real time clock
• Fuel theft alarm
• Cyclic timer
• RPM sensing using genset’s output frequency
• Backlit full graphics display
• Integrated electronic governor controller (SGC 421 only)
1.3 Product overview
Features
Specifications
Digital switch input 9
Analogue resistive inputs 5
Analogue current/voltage inputs 2
USER MANUAL 4189341227A UK Page 4 of 86
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