MEC 2 MICROPROCESSOR ENGINE/GENERATOR CONTROLLER
PM056 Rev 6 05/10/15 Thomson Technology
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Contact Thomson Technology, to obtain applicable instruction manuals. Soft copy of
most current version is available at www.thomsontechnology.com.
1.2. GENERAL DESCRIPTION
The Thomson Technology MEC 2 Microprocessor-based Engine/Generator Controller
utilizes the latest advancements in microprocessor design technology for the control and
monitoring of engine-generator sets. The MEC 2 provides a comprehensive array of
operational, protection and display features for automatically controlling an
engine/generator set. All standard and optional features of the MEC 2 are configurable
from the front panel LCD display and are security password protected. The LCD display
screen prompts are in plain English, providing a user-friendly operator interface with
many display options available. The microprocessor design provides high accuracy for
all voltage monitoring, current monitoring and timing functions as well as providing many
standard features which were previously only available as expensive add-on optional
features.
The MEC 2 provides the following advanced features:
• Up to 15 alarm/shutdown fault circuits utilizing analog and digital inputs.
• Standard model meets or exceeds CSA C282, NFPA 110 Level 1 generator set
control requirements.
• Backlit LCD display screen with alpha-numeric readout for display and programming.
• Digital 3-phase voltage, 3-phase current, KVA and frequency metering for generator
output.
• Non-volatile memory retains logic and setpoints if control power is lost.
• Direct 3-phase voltage sensing inputs on generator supply from 120VAC up to
600VAC (nominal).
• Security password-protected programming levels.
• Self diagnostic features continuously verify processing, I/O and memory circuits.
• Superior EMI/RFI noise immunity and surge performance features as per IEEE
C62.41 requirements.
• Dual microprocessor design provides independent speed sensing circuitry for higher
performance.
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