Installation, Operating & Maintenance Instructions
Series 650 DN 100-250 (I.D. 4“ - 10”), RS485
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel ++41 81 771 61 61 Fax ++41 81 771 48 30 Email
www.vatvalve.com
271149EA
2007-06-12
42/77
3.11.4 Digital inputs
Pin
Function
Signal type Description
Priority
15
CLOSE VALVE
Digital
input
1)
This function will close the valve.
Valve will be in interlock mode as long as function is activated.
After deactivation of function it will remain effective until
- OPEN valve digital input is active
- converse RS485 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 done in local operation via service port or
in remote operation.
1
2)
17
OPEN VALVE
Digital
input
1)
This function will 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 RS485 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 done in local operation via service port or
in remote operation.
2
2)
23
DIGITAL GROUND
Digital
ground
Ground for all digital inputs. Ground is used when digital inputs
are operated by switches. Connect switches to ground.
See also «3.11.2 Schematics» configuration a).
25
DIGITAL COMMON
Digital
common
Common for all digital inputs. Common is used when digital
inputs are driven by voltage sources. C or – terminal of
source with common (optocoupler inputs are capable of
bidirectional operation).
See also «3.11.2 Schematics» configuration b).
1) All digital inputs are digitally filtered. Filter delay is 50ms. This means that digital signals must be applied for
at least 50ms to be effective.
Refer to «3.11.2 Schematics» for details about input circuit.
2) Highest priority is 1. Functions with lower priorities will not be effective as long as higher priority functions
are active. These digital inputs have higher priority than all RS485 commands. RS485 commands will not be
accepted while digital inputs are active.