LOFA EP250 Operation and Troubleshooting
463-3000-01 Rev C.1 - 28-Feb-2007
1
Introduction
This document provides general information on LOFA Industries EP250 control systems operation and
troubleshooting. EP250 control systems are a very flexible platform for diesel engine control, monitoring,
and protection, featuring LOFA’s powerful First Fault Diagnostics (FFD). After pinpointing the initial failure,
FFD stores it in memory and alerts the end user via a single bright LED. FFD monitors battery charge, low oil
pressure, high temperature, overspeed and up to three additional contact closure inputs. The field
configurable, expandable microprocessor-based solid-state design uses high-power semiconductors instead
of outdated electromechanical relays to ensure reliable high-current switching.
The EP250 features LOFA’s new modular Function Enhancement Packs (FEP). The plug-and-play FEP
modules allow various feature upgrades to be easily added to the standard platform. FEPs include:
•
Diagnostic Program Gauge (DPG)
•
Auto-Start with Real-time Clock
•
Data Logging
•
Closed Loop Speed Control
•
Precision Actuator Control
•
Custom OEM Solutions
The Diagnostic Program Gauge (DPG) features a backlit LCD display with three push buttons all in a
compact 2 inch gauge. The LCD is clearly readable in both bright sunlight as well as total darkness. The
DPG provides a complete user interface for other Function Enhancement Packs and allows each system to
be field configured to suit the customer's unique requirements. After configuring, the DPG can be removed
in cost-sensitive applications.
Some of the EP250 configurable features include:
•
Automatic preheat duration
•
Afterglow duration
•
Failure indication with shutdown or indication only
•
Over-speed shutdown
•
Normally open or normally closed shutdown switches
All standard panels include feature a 12 inch wiring harness terminating into a sealed weather proof plug.
This robust universal wiring connection performs well in harsh environments and allows interchanging a
number of different panels and harnesses. This design allows for simplified installation as well as a flexible
means to incorporate custom plug-and-play engine wiring harnesses and standard harness extension
Note
The engine harness is not included with the panel.
A number of standard engine harnesses are available or
LOFA can develop a custom harness for you exact needs.
Generic harnesses in various lengths are available for field customization.
