4. Manual Operation
4 Manual Operation
1.
Ensure that the Auxiliary Engine Stop (if fitted) is not activated.
2.
Turn the keyswitch to the run position.
3.
Turn the keyswitch clockwise to the start position and hold until the engine successfully starts.
4.
Release keyswitch.
If the engine fails to start, the keyswitch must be returned to the off position prior to subsequent start
attempts.
The ECU will not preheat unless conditions warrant. If necessary, starting
the engine may be attempted by turning the key to the start position without
waiting for preheat to expire.
4.1
Throttle Control
Throttle operation is determined by the type of throttle operator(s) installed along with the configured
values of:
•
Minimum Requested RPM
•
Idle RPM
•
Intermediate RPM
•
Run RPM
•
Maximum Requested RPM
The ECU determines how the engine responds to the throttle requests and will not allow the engine
speed to fall below the ECU minimum RPM or go above the ECU maximum RPM. The ECU minimum
and maximum RPM values are determined by the ECU ”payload” and typically require the engine
manufacturer’s configuration tool to adjust. The ECU will honor RPM requests that are above the
ECU’s minimum RPM as well as RPM requests that are below the ECU’s maximum RPM.
Therefore, to avoid confusion it is best to NOT set the panel’s Minimum Requested RPM below the
ECU’s minimum RPM or above the ECU’s maximum RPM.
Example: The panel’s Minimum Requested RPM is set to 800 RPM yet the ECU payload defines the
engine minimum speed to be 900 RPM. In this case, the engine will not run at 800 RPM despite the
CP640c control panel requesting a lower engine speed. The ECU will ignore all RPM requests that
are below 900 RPM, resulting in a minimum speed of 900 RPM.
LOFA document No. 463-3002-22
Page 15