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
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2. Connect compressed air supply to connection labeled ‘IN’ located at actuator.
Connect compressed air return line connection labeled ‘OUT’ located at actuator.
Caution: Compressed air pressure must be in the range of: 4 - 7 bar / 55 - 100 psi (above ATM).
Note: Use only clean, dry or slightly oiled air. IN / OUT connections are 1/8“ ISO/NPT internal threads.
3. Install pressure sensor(s) [2] according to the recommendations of the sensor manufacturer and directives given
under
«Requirements to sensor connection».
4. Connect sensor cable [3] to sensor(s) and then to Master valve (connector: SENSOR).
Refer to chapter «Electrical connection» for correct wiring.
5. Connect Master valve to RS485 [4] (connector: INTERFACE). Refer to «RS485 schematics» for correct wiring.
6. Enable terminating resistor in link adapter of first and last valve in the system. Refer to «Valve cluster connection» for
details.
7. Connect link cable [6] between Slave valve(s) and Master valve (link adapter). Refer to «Valve cluster connection» for
correct wiring.
8. Connect power supply [5] to each valve (connector: POWER). Refer to chapter «Electrical connection» for correct
wiring.
Note: To provide power to the valve motor pins 4 and 8 must be bridged, otherwise motor interlock is active and the
valve enters the safety mode and is not operative. Refer also to «Safety mode».
9. These valves have a double sealed rotary feedthrough with intermediate pumping port for the actuator shaft. This port
(1/8“ ISO/NPT) may optionally be connected to the vacuum line.
10. These valves may optionally be equipped with a heating device. Connect VAT heating device according to manual of
respective heating device.
11. Perform «Setup procedure» to prepare valve cluster for operation.
Note: Without performing the setup procedure the valve cluster will not be able to do pressure control.