THOMSON MEC 20 - V1.82 Service Manual page 30

analog fault circuits. Each analog fault input circuit is activated via specific analog signal
type. Refer to Section 11.3 Analog Fault Programming Menu for the factory default program
settings for each analog fault provided.
PM047 Rev 13 05/03/30
MEC 20 MICROPROCESSOR ENGINE/GENERATOR CONTROLLER
The analog protection circuits for voltage, frequency, current,
engine oil pressure, engine temperature and engine speed will be
set at factory default settings only. Final settings will be required to
be set by the commissioning authority. Failure to do so may result
in severe equipment failure or damage.
4.4.1. ANALOG FAULT CIRCUITS
The MEC 20 is supplied from the factory with fifteen standard analog fault circuits
as follows:
FAULT
NAME
Undervoltage
Overvoltage
Underfrequency
Overfrequency
Overcurrent
Weak battery
Low battery voltage
High battery voltage
Low engine temperature
High engine temperature #1
High engine temperature #2
Low oil pressure #1
Low oil pressure #2
Overspeed
Loss of speed signal
All fault circuits may be user field programmed for different control functions
however their designated fault function is not programmable.
programming instructions for further information.
WARNING!!!
FAULT
ACTION
Shutdown
Shutdown
Alarm Generator frequency
Alarm Generator frequency
Alarm
Alarm
Alarm
Alarm
Alarm
Alarm
Shutdown
Alarm
Shutdown
Shutdown
Shutdown
24
INPUT
SIGNAL
Generator voltage
Generator voltage
Generator current
Battery voltage
Battery voltage
Battery voltage
Engine temperature
Engine temperature
Engine temperature
Oil pressure
Oil pressure
Engine speed
Engine speed
Refer to the
Thomson Technology