MGC120 Petrol Genset Controller User Manual
MGC120 Petrol Genset Controller Version 1.2 2019-02-22 Page 8 of 20
Note:
1)
Press stop key in auto start status, generator will stop and enter into manual mode simultaneously.
2)
Total running timer starts when generator meets crank disconnection conditions, meanwhile, the last decimal
point of the digital tube flashes to indicate that the generator is running.
4.5
MANUAL START/STOP OPERATION
Press
key, indicator besides lights off, which means generator is in manual mode.
a) Manual start:
press
button to start genset (Please refer to 4.4,a),2
～
7). If low oil pressure and
abnormal voltage occur during the running process, controller shall protect it to stop quickly.
b) Manual Stop:
press
button and it can stop the running genset (Please refer to Stop Sequence
2-4).
4.6
AIR FLAP CONTROL
a) Engine cylinder temperature sensor is applied:
Before the genset starts up, If the cylinder temperature is below the set cylinder temperature
limit of air flap blocking, the air flap is at the position of full blocking; if it is between the
temperature limits of air flap dropping and air flap opening, then the air flap is at the position of
half opening; if it is above the temperature limit of air flap opening, the air flap shall be at the
position of full opening;
In the cranking process when the starting countdown goes more than half, the air flap opens
1/3 at current position; when start delay is finished but starting is not completed, next pre-start
cylinder temperature estimation starts;
After successful start, the air flap opens 1/3 again at present position; when the cylinder
temperature is over the temperature limit of air flap opening, the air flap shall open completely;
b) Engine cylinder temperature sensor is applied, or sensor is opened circuit:
Before genset starts up, air flap is at the position of full blocking. For the first starting attempt, the air
flap opens from full blocking and it shall open completely in 2s; for the second starting attempt, the air
flap opens from the position of half blocking and in 2s it opens completely; if the two attempts both failed,
the opening time for air flap becomes 10s.
After successful start, air flap opens 1/3 at present position and meanwhile after air flap blocking
delay the air flap opens completely.
4.7
ATS SWITCHING CONTROL
Auto mode: if Mains is available, ATS switches it to Mains; if Mains is abnormal and genset is
running normally, ATS switches it to generator. In other status, ATS lies at the Mains position.
Manual mode: if generator close input is active, then when genset is running normally, the generator
breaker shall be closed; if generator close input is inactive or the generator is not running normally, then
the Mains breaker shall be closed.
Note:
To use ATS control function, the programmable output ports shall be configured as GCB close output and MCB
close output, and meanwhile input port shall be configured as GCB close input.
