EVCO S.p.A.
EVDRIVE04 | User manual ver. 1.1 | Code 144EPD4I114
Page 25 of 78
In this example, the following values have been applied to the AI4 probe:
PH60 = 0 (pressure measurement unit = Bar)
P4Xty = 1 (0÷20 mA)
PxYty = 1 (BarA)
P4XM = 2000 (expressed in hundredths)
P4Xm = 400 (expressed in hundredths)
P4YM = 2500 (expressed in hundredths)
P4Ym = 1000 (expressed in hundredths)
6.6
Analog positioner control
The analog positioner mode permit to move the valve position linearly respect to the value applied to the active analog
input.
To enter analog positioner mode, from the
Stand-by off
(10), set the
Main control type
(parameter Pr01) to the
desired and enable the valve; if all the configuration is correct enter in
Stand-by on
(11), and then in the
Analog
positioner
(30). To exit the analog positioner mode, it is necessary to disable the valve, which will cause a positioning
movement to the value specified in
Stand-by position
(parameter Pr20), before entering the
Stand-by off
(10).
Pr01 = 01 -> analog positioner on AI1 (0÷20mA)
Pr01 = 02 -> analog positioner on AI2 (0÷5V)
Pr01 = 03 -> analog positioner on AI3 (4÷20mA)
Pr01 = 04 -> analog positioner on AI4 (0÷10V)
Pr01 = 05 -> analog positioner on AI4 (using parameter Pia4 to select probe type)
Pr01 = 07 -> analog positioner on AI3 (4÷20 mA) and AI4 (0÷10V): the positioning is calculated using the maximum
of the two. Resincronization request is performed only if the resulting positioning is <=1
The unused analog input are configured according to their respective Ai probe usage (parameter Pia).
Pe [BarA]
8.00
0.50
I [mA]
4.00 20.00
Position
100%
0%
Analog Input
0 20 mA
4 20 mA
0 5 V
0 10 V
