2. Overview
2 Overview
The LOFA CP640c control panel is an economical platform for EPA Tier 3, EPA Tier 4 (interim), and
EPA Tier 4 electronically governed diesel engines. Graphical gauge pages or a single large analog
gauge are displayed on the 3.5-inch diagonal LCD. Virtually any SAE J1939 parameter reported
by the ECU (Engine Control Unit) can be displayed including, but not limited to: RPM, coolant
temperature, oil pressure, engine hours, voltage, exhaust emissions system state, and diagnostic
codes. The backlit display is clearly readable in both bright sunlight as well as total darkness and
housed in a rugged IP66 rated housing. The CP640c can optionally include three (3) bright LEDs to
indicate Faults, Warnings, and Emission-Related Alerts.
All components are installed in a heavy-duty, vibration isolated, metal enclosure designed to with-
stand the most extreme industrial applications. External weather resistant switches and controls
facilitate convenient operator inputs/controls. Active fault conditions are displayed in plain language
on popup messages and can be viewed in the fault list. Various diagnostic screens allow detailed
investigation of the CAN bus data stream.
All diagnostic and emissions related messages displayed on the CP640c
are generated by the engine ECU or other attached devices. The operator
must be familiar with the engine manufacturer ECU messages and icons in
order to react accordingly with respect to emissions compliance, service,
and diagnostic message response.
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LOFA document No. 463-3002-22
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