The Q-TAGG Propulsion Control System is an expansion of the Diesel Engine Governor System DEGO IV.
In conjunction with the Pitch Control Interface (PCI) a versatile pitch control system is configured that covers all typical propulsion arrangements such as:
• Single engine with CPP
• Twin engine with one CPP
• 2 x twin engine with two CPPs
The controller interfaces with all major CPP manufacturers hydraulic systems.
The system has three modes of operation that are selected from the bridge using the Touch Control Panels:
• Combinator with Load Control
• Constant RPM Mode
• Constant Power Mode
In Combinator mode the telegraph position is translated into engine speed- and propeller pitch set points. The engine(s) are controlled to the speed set point by the governor and the propeller pitch is regulated to the pitch set point according to the combinator curve. If the engine reaches a load limitation, the Load Controller takes over and reduces the pitch until the set-point for the load control is obtained.
Two redundant inputs 18-32VDC with indiv. alarms + fuses.
5 pce outputs 10V short circuit proof (pot. supply)
4 pce 24V outputs stabilized (I/O supply)
4 pce isolated circuits: DEGO1, DEGO2, Process I/O and outputs to valves
Analog Inputs: 5 pce 0-10V, 0-20mA or potentiometer
Digital inputs: 5 pce 24V
Digital Output: 1 pce 24V
O/D box interface
24V 2A outputs for AH/AST valves
0-10V alt ±10V for analog control valve
0-20mA alt. ±10V
In this mode the Pitch/RPM working point is controlled to a max allowed propeller slip. This means acceleration without propeller cavitation and running the propeller at its best operational point for all sea- and weather conditions.
The propeller RPM and Pitch is optimized for the chosen kg/hour set-point, i.e. maximizing the nautical miles per kilowatt hour.
The power set-point is entered in the Touch Panel.