VAT 642 Series User Manual

INSTALLATION Series
642
18/119 Edition 2017-11-24 742280ED
• Do not tighten the flange screws stronger than indicated under «Tightening
torque».
• Do not admit higher forces to the valve than indicated under «Admissible forces».
• Make sure that enough space is kept free to do preventive maintenance work.
The required space is indicated on the dimensional drawing.
2. Install the ground connection cable at controller. Refer to «Electrical connection»
3. Install connection cable between actuator (connector) and controller (connector: VALVE)
4. Install sensor(s) [2] according to the recommendations of the sensor manufacturer and directives
given under «Requirements to sensor connection».
5. Connect pressure sensor cable [3] to sensor(s) and then to valve (connector: SENSOR). Refer to
chapter «Electrical connection» for correct wiring.
Input for second sensor is available on
642
. .
-
. . .
H
-
. . . . version only.
6. Connect Master valve to RS232 [4] (connector: INTERFACE). Refer to «RS232 schematics» for
correct wiring.
7. Enable terminating resistor in link adapter of first and last valve in the system. Refer to «Valve cluster
connection» for details.
8. Connect link cable [6] between Slave valve(s) and Master valve (link adapter). Refer to «Valve cluster
connection» for correct wiring.
9. Connect power supply cable[5] to valve (connector: POWER). Refer to chapter «Electrical
connection» for correct wiring.
To provide power to the valve motor pins 2 and 3 must be bridged, otherwise motor
interlock is active and thevalve enters the safety mode and is not operative. Refer
also to «Safety mode».
10. This valve 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 for operation.
Without performing the setup procedure the valve will not be able to do pressure
control.
4.3 Tightening torque
The torque values below are dependent on many factors, such as materials involved,
surface quality, surface treatment, and lubrication.
The torques below are valid if immersion depth of the mounting screws is at least
once the thread diameter (min. 1d), and the friction coefficient of the screw-flange
connection (µ
total
= (µ
screw thread-helicoil
+ µ
under screw head
)/2) is bigger than 0.12. Lower
friction coefficients may damage the valve, as the resulting preload force gets too

VAT 642 Series Specifications

General

Brand	VAT
Model	642 Series
Category	Control Unit
Language	English