ECON-4, SW version 1.4 rev.1, ©ComAp – March 2016 Draft 30
ECON-4 Reference guide.pdf
F. Parameters: ActTypex (In this case ActType 1): ActCur 0% and ActCur 100% are not
used, so their value is not important
G. Parameters: ActTypex (In this case ActType 1): Act MaxCur is maximum allowable
current, in case bigger current is detected (in fact bigger output PWM signal is
detected) for longer then: ActMaxCurDel, then the output is limited to value
ActReduced Cur. So in case we have actuator with resistance 32Ohms, ECON
power supply is 24Volts and maximum allowable actuator is 250mA, then it is
recommended to adjust: Act MaxCur = 33,3%, (24V / 32Ω = 750mA, 250mA is
33,3% from 750mA), Act MaxCurDel = 5 sec, Act ReducedCur = 10%.
H. Adjust parameter: Main PID: Actuator Type to the actuator which you use, so in this
case ActType 1.
I. Connect the actuator to ECON-4, outputs ACT+ ACT- (take care about polarity)
J. Adjust ECON-4 parameter: Main PID: ECON-4 mode to MANUAL and run WinScope
recording with values: Gas Dose and Act1 Fdbck in range 0.0 – 100.0%.
K. When recording is active, change parameter: Main PID: Act position from 0 to 10,
20, 30, .. 100 and check the response of the actuator (via feedback signal in
WinScope). In case the response is too lazy or too fast, then update the
corresponding Act gain, Act int and Act der parameters in ActTypex (in our case
ActType1) to get required response.
L. After adjustment is finished, put parameter: Main PID: ECON-4 mode to AUTOMATIC
M. Based on the chosen type of control (BIN, ANA, DATA) connect the required signal
N. Adjust all other parameters like Nominal, Idle speed, Geer teeth, Overspeed, Speed
and Load PID, (to the number which ECON-4 output you are using)
O. ECON-4 is ready for start attempt.
2. Adjustment for LINEAR NO FDB actuator type (typically GAC, Woodward)
A. Connect to ECON-4 via USB connector, using PC program WinScope.
B. Choose one ActType x group, e.g. ActType 1 and adjust parameter Wiring to LINEAR
NO FDB
C. ECON-4 does not measure the current through actuator. The output signal is PWM,
with frequency 6000 Hz. 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. Adjust Act Cur 0% to 0% and Act Cur 100% to 34%
(250mA from 750mA). By this the output is scaled from 0 to 250 mA.
D. Parameters: ActTypex (In this case ActType 1): Act MaxCur is maximum allowable
current, in case bigger current is detected (in fact bigger output PWM signal is
detected) for longer then: ActMaxCurDel, then the output is limited to value
ActReduced Cur. The Act Max Curr is calculated from the value Act Cur 100%, so it
means, that the current limitation is in this case already done by adjustment of ActCur
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