THOMSON MEC 2, Service Manual

Page: 27 / 90

MEC 2 MICROPROCESSOR ENGINE/GENERATOR CONTROLLER
PM056 Rev 6 05/10/15 Thomson Technology
22
FAULT
NAME
FAULT
ACTION
INPUT
SIGNAL
Over voltage Shutdown Generator voltage
Over frequency Alarm Generator frequency
Over current Alarm Generator current
Under voltage Shutdown AC Voltage
Under frequency Shutdown AC Frequency
Weak battery Alarm Battery voltage
Low battery voltage Alarm Battery voltage
High battery voltage Alarm Battery voltage
Low engine temperature Alarm Engine temperature
High engine temperature #1 Alarm Engine temperature
High engine temperature # 2 Shutdown Engine temperature
Low oil pressure #1 Alarm Oil pressure
Low oil pressure #2 Shutdown Oil pressure
Over speed Shutdown Engine speed
Loss of speed signal Shutdown Engine speed
All fault circuits may be user field programmed for different control functions
however their designated fault function is not programmable. Refer to the
programming instructions for further information.
4.4.2. GENERATOR AC VOLTAGE
4.4.2.1.GENERATOR UNDER VOLTAGE
The MEC 2 controller provides a 3-phase under voltage sensor for the
generator supply. The under voltage sensor is programmable for type of
fault action (i.e. alarm or shutdown), pickup and dropout voltage setpoints
(i.e. adjustable hysteresis) and transient time delay settings. Refer to the
programming instructions for further information.
4.4.2.2.GENERATOR OVER VOLTAGE
The MEC 2 controller provides a 3-phase over voltage sensor for the
generator supply. The over voltage sensor is programmable for type of
fault action (i.e. alarm or shutdown), pickup and dropout voltage setpoints