ECON-4, SW version 1.4 rev.1, ©ComAp – March 2016 Draft 29
ECON-4 Reference guide.pdf
Data Analog inputs
AI1 Engine RPM RPM pick-up;
(RPM value source for IS-NT)
AI2 Misfiring Amplitude*
No RPM pickup is needed in IS-NT. Configure IS-NT – I /O – ECON-4– AIN1 Engine RPM for
Function = RPM pick-up
Sensor = Electronic
* Misfiring evaluation from ECON-4 is not implemented in version 1.0
Data Analog outputs
AOUT1 Active power – relative 0,0 – 100,0 % (option)
AOUT2 SpeedReq RPM In RPM /8 (option)
Active power value is required for Load anticipation function – see Main PID: Load anticip. In
GenConfig choose value: Gener values: Act Pwr rel, option Normalize – YES, resolution 0,1.
For AOUT2 choose: Sync/Load ctrl: SpeedReqRPM and leave the default settings of this output.
ECON adjustment for various types of actuators
Basically there are available 3 types of actuator types:
LINEAR – actuator is driven by a current, which acts against a spring which pushes the actuator to
close position. Actuator is equipped with position feedback signal. Available feedback signal for ECON
is 0,4 to 4,6 Volts DC.
LINEAR NO FDB – actuator is driven by a current, which acts against a spring which pushes the
actuator to close position. Actuator is not equipped with position feedback signal.
BRIDGE – in principal electromotor, one current polarity moves the actuator to one position, reverse
polarity moves the actuator to another position.
1. Adjustment for LINEAR actuator type (typically Woodward)
A. At first check the position feedback level, in case it is not within limits 0.4 to 4,6 Volts,
then use the LINEAR NO FDB adjustment.
B. Connect to ECON-4 via USB connector, using PC program WinScope.
C. Adjust the Position feedback limits in parameter group: AnalogSensors: Fdb 0 pos to
voltage of feedback in case the actuator is fully closed, and Fdb 100 pos to value of
voltage when actuator is fully opened.
D. ECON-4 does not measure the current through actuator. The output signal is PWM,
with adjustable frequency. The maximum ECON-4 current is given by resistance of
the actuator and power supply of ECON-4. ECON-4 is rated to maximum 8 Amps. In
case the actuator has resistance 32 Ohms and power supply is 24V, then maximum
ECON-4 current is: 24/32 = 0,75A = 750mA. This means 100% of ECON current is
750mA. In case the maximum allowable actuator current is 250mA, then this is 33.3%
of maximum ECON-4 current. This value will be used for the maximum current
limitation.
E. Choose one ActType x group, e.g. ActType 1 and adjust parameter Wiring to
LINEAR, and adjust parameters Act gain to 10%, Act int to 10% and Act der to 10%
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