Figure 8.4 Successful engine start sequence for a stop coil system
Start
attempts
1
Crank
Running
detection
t1
(1)
(2)
(3)
t1 = Crank on (Parameters > Engine > Start sequence > Crank > Crank on)
1. Start attempts: The engine starts during the first start attempt.
2. Crank: Engine > Crank (digital output). The controller activates the Crank output. If Running detection changes from OFF to ON,
cranking stops.
3. Running detection. The engine is regarded as started when Running detection is ON.
Figure 8.5
Failure of engine start sequence for a stop coil system
Start
attempts
1
Crank
2 3
Running
detection
t2
t1
Stop coil
t3
(1)
(2)
(3)
(4)
t2
Start failure
(5)
t1 Crank on (Parameters > Engine > Start sequence > Crank > Crank on)
t2 Crank off (Parameters > Engine > Start sequence > Crank > Crank off)
t3 Extended stop (Parameters > Engine > Stop sequence > Extended stop) (optional)
Failure of engine start sequence for a stop coil system:
1. Start attempts: Parameters > Engine > Start sequence > Start attempts > Normal = 3.
2. Crank: Engine > Crank (digital output). The controller activates the Crank output for the Crank on time, and deactivates it for
Crank off time.
3. Stop coil: Engine > Stop coil (digital output). If Running detection is OFF after the Crank on time, then the controller activates
the Stop coil for the time in the Crank off parameter. If all start attempts fail, the controller also activates the Stop coil for the time
in Extended stop > Stop coil activated. This ensures that the engine is stopped if the engine start was not detected. The engine
cannot be started during the Extended stop > Stop coil activated time.
4. Running detection. There is no running detection.
5. Start failure. The controller activates the Start failure alarm after the last unsuccessful start attempt.
DESIGNER'S HANDBOOK 4189340911K UK Page 293 of 521
To Next Page
Loading...
