ECON-4, SW version 1.4 rev.1, ©ComAp – March 2016 Draft 49
ECON-4 Reference guide.pdf
Act Cur 100% %
Transformation between actuator requested position and actuator current when Actuator without
position feedback is used. Specification of requested current (voltage) for 0% actuator position.
Step: 0.1 %
Range: 0 – 100.0 %
Wiring LINEAR, BRIDGE, LINEAR NO FDB
LINEAR : It is electro-magnetic actuator with a strong return spring. This is in principle
electromagnet with proportional characteristic – the bigger is the current to the actuator, the bigger is
the angle of the actuator. Direction of movement of the actuator lever does not depend on polarity of
the current. This type of actuator has position feedback. Typically it is GAC actuators or Woodward 0-
200mA, or PWM.
BRIDGE : typical examples are actuators from Heinzmann
It is in principle a DC electromotor driving actuator lever. Since it is a motor, it has bipolar integrating
characteristic – as long as the current flows through the actuator, actuator’s lever moves. Direction of
movement of the actuator lever depends on polarity of the current – when the polarity of the current is
reversed, direction of movement of the actuator lever reverses as well. This type of actuator has
always position feedback. Choose this possibility for Heinzmann actuators and connect the position
feedback signal
LINEAR NO FDB : For example it is electro-hydraulic actuator – in principle a small
electromagnetic actuator with hydraulic booster. It has unipolar proportional characteristic – the bigger
is the current, the bigger is the angle of the actuator. Direction of movement of the actuator lever does
not depend on polarity of the current. Actuator is without position feedback.
Act type 2 predefined for Woodward ITB PWM
Setting is active when Main PID: Actuator type = Act type 2. Setpoint structure see in Act type 1.
Act type 3 predefined for Woodward F-series PWM
Setting is active when Main PID: Actuator type = Act type 3. Setpoint structure see in Act type 1.
Act type 4 predefined for Heinzmann STG 10
Setting is active when Main PID: Actuator type = Act type 4. Setpoint structure see in Act type 1.
List of tested actuators by ComAp
Act gain = 5
Act int = 100
Act der = 0
PWM rate = 2000 Hz
Fdb 0 pos = 0,5 V
Fdb 100 pos = 4,5 V
Act gain = 20
Act int = 400
Act der = 0
PWM rate = 2000 Hz
Fdb 0 pos = 0,5 V
Fdb 100 pos = 4,5 V
Act gain = 0,5
Act int = 200
Act der = 0
PWM rate = 2000 Hz
Fdb 0 pos = 0,42 V
Fdb 100 pos = 4,55 V
Act gain = 90
Act int = 600
Act der = 150
PWM rate = 6000 Hz
Fdb 0 pos = 1,76 V
Fdb 100 pos = 3,1 V
Act gain = 90
Act int = 600
Act der = 150
PWM rate = 6000 Hz
Fdb 0 pos = 1,76 V
Fdb 100 pos = 3,1 V
Act gain = 35
Act int = 300
Act der = 150
PWM rate = 6000 Hz
Fdb 0 pos = 1,78 V
Fdb 100 pos = 2,8 V
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