ID-DCU-MARINE-2.2.2, ©ComAp – June 2015 - 133 -
ID-DCU-MARINE-2.2.2.pdf
Requested RPM, Overload protection (PRP only)
Idle Offset [RPM] = Idle RPM [RPM] + (Idle Offset [%] / 100) x (Nominal RPM [RPM] – Idle RPM [RPM])
Engine Values: Speed Request is value in the range 0,0 to 100,0%.
Engine Values: Speed Request can be changed
o From analog input configured as Logical Analog Input Requested RPM.
o Via binary inputs Speed Up, Speed Down with ramp BI Speed Ramp.
o From ID panel using Fast edit function.
o See Engine Values: Speed Request charts for PRP and AUX / EME / HRB modes.
When Logical Analog Input Requested RPM indicates sensor fail or it is not configured and Binary
input Back Up Speed is closed the Loadsharing: ThrottlePos value is adjusted to the
Loadsharing: Back Up Speed, the ThrottlePos value change is influenced by ramp Loadsharing:
RQSP Ramp.
When binary input Fire Speed is closed the Clutch is disconnected and the Loadsharing:
ThrottlePos is set to Engine params: FireAlarmSpeed, the ThrottlePos value change is influenced
by ramp Loadsharing: RQSP Ramp.
For 100% of Engine Values: Speed Request the controller sends 100,0% Loadsharing:
ThrottlePos (TP) to the ECU, for 0,0% of Engine Values: Speed Request sends the value of the
setpoint Idle offset.
The setpoints Nominal speed [RPM] and Idle speed [RPM] have to be set to real values that the
engine is running at 100% TP respectively 0% TP
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