Carel EVD4, User Manual, Page: 18 / 48

18
Fig. 3.13
ENGL
ISH
EVD
4
+030220227 - rel. 2.1 - 12.06.2008
3.3.3 EVD4_UI user interface
The EVD4_UI user interface is based on the CAREL supervisor protocol and is designed for the easy and
intuitive reading or confi guration of the control parameters. The program can be started in different
confi gurations so as to display the set of parameters that is suitable for the type of installation the EVD
4 ; is used
in; to do this, make the connection using the name of the required confi guration. The interface confi guration
for the ‘positioner’ function is shown in Fig. 3.13 and is activated by making the “EVD4_UI positioner”
connection.
3.3.4 Start-up
After having connected the EVD 4 as described in 3.3.1, connect the service serial port to a PC using the
converter and confi gure the values of the parameters listed in 3.3.2 using the software described in 3.3.3
as follows:
- Power up the EVD 4 from the mains or via converter
- Connect EVD4 to the PC via the converter
- Set “S4 probe type” = 5 (confi guration of input S4 as 4 to 20 mA) or 6 (0 to 10 V)
- Close input DI1
- Set “posit. with S4”= 2
- Activate “stand alone”
To calibrate the analogue inputs, proceed as follows:
- Reset the EVD4 by activating the digital variable “Reset to default”
- Within 30 seconds write 19157 to KEY1 (functional test mode)
- Write 1223 to KEY12 (disable exit the functional test by timeout, within 250 seconds)
- Activate the Functional test digital variable; the calibration parameters are now accessible in write mode
- Set the Calibr. S4 gain mA and Calibr. S4 offs mA parameters to zero for 4 to 20 mA operation, or
alternatively Calibr. S4 gain Volt and Calibr. S4 offs Volt for 0 to 10 Volt operation
- Set S4 probe type = 5 (confi guration of input S4)
The parameters can be accessed for read and write even if the EVD
4
is not powered, as the converter or the
programming key provide the power supply to the driver, excluding the valve