Series 612  INSTALLATION 
 
605262EE  Edition 2018-08-20  33/
 
4.5.7.1  Digital input 
Pin 
type 
Description 
3 
Digital 
input 
This function will close / open the valve. 
Valve will be in interlock mode as long as function is activated. 
After deactivation of function it will remain effective until converse EtherCAT 
control command have been received 
 
The function is activated when optocoupler is ‘on’ in non inverted configuration.
 
The function is activated when optocoupler is ‘off’ in inverted configuration. 
 
Configuration can be changed in local operation via service port with CV, CPA or 
Hyper terminal. Refer to chapter: «LOGIC I/O configuration». 
 
1 
Digital 
ground 
Ground for digital input. Connect switch to ground.  
See also «LOGIC I/O». 
 
 
 
 
The digital input is digitally filtered. Filter delay is 50ms. This means that digital signal 
must be applied for at least 50ms to be effective. Refer to chapter: «LOGIC I/O» for 
details about input circuit. 
 
 
4.5.7.2  Digital output 
Pin 
type 
Description 
2 
Digital 
output 
This function will indicate that the valve is closed or open. If the function “ON” is 
configured the output is continous on. 
 
Configuration can be changed in local operation via service port with CV, CPA or 
Hyper terminal. Refer to chapter: «LOGIC I/O configuration». 
 
4 
Digital 
common
Common for all digital output. Connect + or – terminal of source with common. 
See also «LOGIC I/O». 
 
 
 
4.5.8  Service port connection 
The service port (connector: SERVICE) allows to connect the valve to a RS232 port of a computer. 
This requires a service cable and software from VAT. 
You can use our Software (freeware) 'Control Performance Analyzer' which can be downloaded from: 
http://www.vatvalve.com/customer-service/informations-and-downloads/control-performance-analyzer. 
Alternatively the VAT Service Box2 can be connected to the service port for setup and local operation. 
The service port is not galvanic isolated. Therefore we recommend using this only for setup, testing and 
maintenance and not for permanent control. 
Refer also to chapter: «Local Operation» for details and to chapter «Spare parts / Accessories» for 
ordering numbers of service cable, software and Service Box 2. 
 
 
 
Use only screws with 4–40 UNC thread for fastening the service port connector.