Installation, Operating & Maintenance Instructions
Series 615 DN 40 (I.D. 1½”), DeviceNet
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel +41 81 771 61 61 Fax +41 81 771 48 30 CH@vatvalve.com www.vatvalve.com
4.12 S-Singel Stage Controller Object (Class ID 51)
Service
data length
(number of bytes)
1 (pressure)
2 (position)
Y: 0 control (pressure resp. position control)
1 close valve (valve will close)
2 open valve (valve will open)
3 hold (stops the valve at the current position)
4 safe state (valve will close)
This command preselects / returns the control mode for pressure resp. position control. By
means of instance ID either pressure or position must be addressed.
1 (pressure)
2 (position)
Y: position setpoint according to selected DATA TYPE, 0 (closed) … 10’000 (open)
or
Y: pressure setpoint according to selected DATA TYPE,
nominal pressure range is 0 … 10’000 (sensor full scale) but it may be scaled,
refer also to command GAIN for details.
This command transfers/reads the position/pressure setpoint to/from the valve.
This command returns the actual pressure according to selected DATA TYPE. Nominal
pressure range is 0 … 10’000 (sensor full scale) but it may be scaled. Refer also to
command GAIN and picture on the following page for details.
X: 1 Sensor 1
2 Sensor 2
3 Auto
This command selects/returns the source of process variable for process control function.
X: valve speed, 1 … 1000 (1 = min. speed, 1000 = max. speed),
This command selects/returns the actuating speed for the valve plate. Data type is unsigned
integer. Speed selection is effective for pressure control and position control. Open valve
and close valve are always done with max. speed.
Note: Refer to «Valve speed adjustment» for details.
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