ECON-4, SW version 1.4 rev.1, ©ComAp – March 2016 Draft 44
ECON-4 Reference guide.pdf
Example:
Droop = 5%, Nominal RPM = 1500RPM. Speed reference is 1500 RPM on idle fuel and 1500 –
1500*0.05 = 1425 RPM on MaxFuel.
Load anticip [%]
Governor is equipped by load anticipation feedback, which helps to keep stable speed in case of fast
load changes. In the case of load jump forces the ECON-4 governor output (Actuator lever) by jump
according to Load anticip setting.
Engine load value can be received via physical Analog input S3.2 ACTIVE POWER as 0 to 10V or 20
mA signal (if setpoint Speed request=BIN or ANA) or via CAN bus in the case of communication to IS-
NT controller (if setpoint Speed request=DATA). In such case follow this configuration in GenConfig: /
- I/O – Analog outputs – ECON-4 – AOUT1 = Gener values – Act.power rel.
- In the configuration choose option Normalize – YES and resolution adjust to 0,1
Step: 0.1 %
Range: 0.0 – 100.0 %
MaxFuel [%]
Maximum output from the PID speed control loop + Load anticipation signal. It limits the maximum fuel
delivered to the engine.
Step: 0.1 %
Range: 0.0 – 100.0 %
It is also used as coordinate for Speed/Fuel line. See description in chapter Speed governor function
in parallel mode.
If you need to limit throttle opening during debugging and adjustment of load control in parallel to
Mains, do not decrease MaxFuel limit – this would influence load regulation. Rather than this decrease
setpoint SpeedGovHiLim in controller. See next picture for description
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