VAT 650 Series Assembly instructions

Installation, Operating & Maintenance Instructions
Series 650 DN 200 (I.D. 8”), DeviceNet
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Pendulum control & isolation valve
with DeviceNet interface
This manual is valid for the valve ordering number(s):
65046-PHCQ-AFA1
configured with firmware 650P.1E.42 and 264420 (DeviceNet®)
The fabrication number is indicated on each product as per the label
below (or similar):
made in Switzerland
Fabrication No.:
650
..
–
.. ..
–
.. ../ ....
A
–
. ... ..
Fabrication number
sample picture
Explanation of symbols:
Read declaration carefully before you start any other
action!
Keep body parts and objects away from the valve
opening!
Attention! Hot surfaces; do not touch!
Loaded springs and/or air cushions are potential
hazards!
Wear gloves!
Disconnect electrical power and compressed air
lines. Do not touch parts under voltage!
Read these «Installation, Operating & Maintenance Instructions» and the enclosed «General
Safety Instructions» carefully before you start any other action!

Installation, Operating & Maintenance Instructions
Series 650 DN 200 (I.D. 8”), DeviceNet
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Imprint
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Manufacturer
Website
www.vatvalve.com
Phone
[phone]
Fax
[phone]
Email
[e-mail]
Publisher VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Editor VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Print VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Copyright © VAT Vakuumventile AG 2011
No part of these Instructions may be reproduced in any way (photocopies, microfilms or any
other reproduction processes) nor may it be manipulated with electronic systems, duplicated or
distributed without written permission from VAT. Offenders are liable to pay damages.
The original VAT firmware and updated state of the art versions of the VAT firmware are
intended for use with VAT products. The VAT firmware contains a limited, time unlimited user
license. The VAT firmware may not be used for purposes other than those intended nor is it
permitted to make copies of the VAT firmware. In particular, it is strictly forbidden to give
copies of the VAT firmware to other people.
The use of trade names, brand names, trademarks, etc. in these Instructions does not entitle
third parties to consider these names to be unprotected and to use them freely. This is in
accordance with the meaning of the laws and acts covering brand names and trademarks.

Installation, Operating & Maintenance Instructions
Series 650 DN 200 (I.D. 8”), DeviceNet
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Contents:
1Use of product .......................................................................................................................................................... 5
1.1 Technical data ................................................................................................................................................. 5
2Installation................................................................................................................................................................. 7
2.1 Unpacking........................................................................................................................................................ 7
2.2 Installation into the system .............................................................................................................................. 7
2.3 Tightening torque............................................................................................................................................. 9
2.3.1 Mounting with centering rings.............................................................................................................. 9
2.3.2 Mounting with O-ring in grooves.......................................................................................................... 9
2.4 Admissible forces........................................................................................................................................... 10
2.5 Requirements to sensor connection.............................................................................................................. 10
2.6 Electrical connection...................................................................................................................................... 11
2.6.1 Ground connection............................................................................................................................ 11
2.6.2 Sensor supply concepts.................................................................................................................... 12
2.6.3 Power and sensor connection (±15 VDC sensors) with optional SPS module.................................. 13
2.6.4 DeviceNet®connection.....................................................................................................................14
2.6.5 LOGIC I/O.......................................................................................................................................... 15
2.6.6 Digital input........................................................................................................................................ 16
2.6.7 Digital output ..................................................................................................................................... 16
2.6.8 Service port connection..................................................................................................................... 16
3Operation................................................................................................................................................................ 17
3.1 Introduction.................................................................................................................................................... 17
3.1.1 Local operation.................................................................................................................................. 18
3.1.2 Remote operation.............................................................................................................................. 18
3.1.3 Safety mode ...................................................................................................................................... 19
3.1.4 Service indication .............................................................................................................................. 19
3.2 Operation under increased temperature........................................................................................................ 19
3.3 Behavior during power up.............................................................................................................................. 19
3.4 Behavior in case of power failure................................................................................................................... 20
3.5 Display information ........................................................................................................................................ 21
3.6 Setup procedure ............................................................................................................................................ 23
3.6.1 DeviceNet®configuration................................................................................................................... 24
3.6.2 LOGIC I/O configuration.................................................................................................................... 26
3.6.3 Valve and sensor configuration......................................................................................................... 27
3.6.4 ZERO................................................................................................................................................. 28
3.6.5 LEARN............................................................................................................................................... 29
3.7 Close valve .................................................................................................................................................... 30
3.8 Open valve..................................................................................................................................................... 30
3.9 Position control .............................................................................................................................................. 31
3.10 Pressure control............................................................................................................................................. 31
3.10.1 Pressure control operation with 2 sensors ........................................................................................ 32
3.10.2 Tuning of control performance........................................................................................................... 33
3.11 DeviceNet®interface...................................................................................................................................... 37
3.11.1 Assembly objects .............................................................................................................................. 37
3.11.2 Assembly object bit map ................................................................................................................... 38
3.11.3 Explicit messaging control commands .............................................................................................. 40
3.11.4 Explicit messaging inquiry commands............................................................................................... 42
3.11.5 Explicit messaging setup commands ................................................................................................ 48
4Trouble shooting..................................................................................................................................................... 53
5Maintenance & repairs............................................................................................................................................ 56
5.1 Maintenance procedures ............................................................................................................................... 57
5.2 Option board.................................................................................................................................................. 64
5.2.1 Durability of power fail battery........................................................................................................... 64
5.2.2 Retrofit / replacement procedure....................................................................................................... 65
6Drawing................................................................................................................................................................... 69
7Spare parts............................................................................................................................................................. 70
7.1 Control unit .................................................................................................................................................... 70

Installation, Operating & Maintenance Instructions
Series 650 DN 200 (I.D. 8”), DeviceNet
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7.2 Valve unit with seals and grease ................................................................................................................... 71
7.3 Accessories ................................................................................................................................................... 72
7.3.1 Centering ring with Viton o-ring......................................................................................................... 72
8Warranty................................................................................................................................................................. 73

Installation, Operating & Maintenance Instructions
Series 650 DN 200 (I.D. 8”), DeviceNet
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1 Use of product
This product is a throttling pendulum valve with isolation functionality. It is intended to use for downstream pressure
control applications.
Use product for clean and dry indoor vacuum applications under the conditions indicated in chapter «Technical data» only!
Other applications are only allowed with the written permission of VAT.
1.1 Technical data
Control and actuating unit
Input voltage 1) +24 VDC (±10%) @ 0.5 V pk-pk max. [connector: POWER]
Power consumption 96 W [connector: POWER]
Power input (DeviceNet®) 3 W max. (from DeviceNet®) [DeviceNet® connector]
Sensor power supply output 2) ±15 VDC (±5%) / 1000 mA max. [connector: SENSOR]
Sensor input
Signal input voltage / Input resistance
ADC resolution
Sampling time
0-10 VDC / Ri>100 kΩ(linear to pressure)
0.23 mV
10 ms
[connector: SENSOR]
PFO3) battery pack
Charging time
Durability
2 minutes max.
up to 10 years @ 25°C ambient
refer to «Durability of power fail battery» for details
Compressed air supply
4 - 7 bar / 55 - 100 psi (above ATM)
Ambient temperature
0 °C to +50 °C max. (<35 °C recommended)
Pressure control accuracy
5 mV or 0.1% of setpoint, whichever is greater
Position resolution / position control capability
12266 (full stroke)
Closing time throttling only
0.9 s typ.
Opening time throttling only
0.9 s typ.
Closing time throttling & isolation
3 s typ.
Opening time throttling & isolation
4 s typ.
1) Internal overcurrent protection by a PTC device.
2) Refer to chapter «Sensor supply concepts» for details.
3) PFO = Power Failure Option. Refer to «Behavior in case of power failure» for details.

Installation, Operating & Maintenance Instructions
Series 650 DN 200 (I.D. 8”), DeviceNet
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Valve unit
Pressure range at 20°C 1 x 10E-6 mbar to 1.2 bar (abs)
Leak rate to outside at 20°C 1 x 10E-5 mbar l/s
Leak rate valve seat at 20°C 1 x 10E-4 mbar l/s
Cycles until first service
- Isolation cycles (open - closed - open)
- Throttling cycles (open - max. throttle - open)
200’000 (unheated and under clean conditions)
1’000’000(unheated and under clean conditions)
Admissible operating temperature 10°C to +150°C
Mounting position any (valve seat on chamber side is recommended) (valve seat
to face chamber is recommended)
Wetted materials
body Aluminium AA6082 (3.2315) hard anodized
pendulum plate Aluminium AA6082 (3.2315) hard anodized
sealing ring Aluminium AA6082 (3.2315) hard anodized 3.2315 (AA6082),
1.4306 (304L)
Other parts Stainless steel 316L (1.4404 or 1.4435), 1.4122, 301 (1.4310),
304 (1.4303), 1.4571, A2 (304)
Seals body FKM (e.g. Viton®)
plate FKM (e.g. Viton®)
rotary feedthrough atmosphere side FKM (e.g. Viton®)
rotary feedthrough vacuum side FKM (e.g. Viton®)
shaft feedthrough atmosphere side FKM (e.g. Viton®)
shaft feedthrough vacuum side FKM (e.g. Viton®)
bonnet FKM (e.g. Viton®)
Max. differential pressure on plate during isolation 1200 mbar in either direction
Max. differential pressure on plate
during opening and throttling
5 mbar
Min. controllable conductance
(N2molecular flow)
10 l/s
Dimensions Refer to dimensional drawing of specific valve ordering number
(available on request)

Installation, Operating & Maintenance Instructions
Series 650 DN 200 (I.D. 8”), DeviceNet
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2 Installation
2.1 Unpacking
As this valve is a heavy component you should lift it with adequate equipment to prevent any injury to
humans.
Valves DN200 (8”) and larger are equipped with attachment points (tapped holes). Add eyebolts to
these attachment points for lifting. The attachment points are indicated on the dimensional drawing of
the specific valve part number (available on request).
Never lay the valve down with control and actuating unit downwards as it may be damaged.
2.2 Installation into the system
Fingers and objects must be kept out of the valve opening and away from moving parts.
The valve plate may start to move just after power is supplied.
Do not connect or disconnect sensor cable when device is under power.
Do not disconnect air supply when device is under power.
Compressed air pressure must be in the range of: 4 - 7 bar / 55 - 100 psi (above ATM)
Use only clean, dry or slightly oiled air.
Connection overview Connectors at controller panel
DeviceNet
®
connector
Ground
connection

Installation, Operating & Maintenance Instructions
Series 650 DN 200 (I.D. 8”), DeviceNet
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1. Install valve [1] into the vacuum system. Valve seat side should face process chamber. The valve seat side is
indicated by the symbol "∇" on the valve flange.
Caution: Do not tighten the flange screws stronger than indicated under «Tightening torque».
Caution: Do not admit higher forces to the valve than indicated under «Admissible forces».
Note: Make sure that enough space is kept free to do preventive maintenance work. The required space is indicated
on the dimensional drawing.
2. Connect compressed air supply to connection labeled ‘IN’ located at actuator, see Figure 1 below.
Connect compressed air return line connection labeled ‘OUT’ located at actuator, see Figure 1 below.
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 valve (connector: SENSOR).
Refer to chapter «Electrical connection» for correct wiring.
Note: 65046-PHCQ-AFA1 supports 2 sensor(s).
5. Connect valve to DeviceNet [4] (connector: INTERFACE). Refer to «DeviceNet schematics» for correct wiring.
6. Connect power supply [5] to 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».
7. This valve has a double sealed rotary feedthrough and optionally an intermediate pumping port for the actuator shaft.
This port (1/8“ ISO/NPT) could be connected to the vacuum line, see Figure 2 below.
8. This valve may optionally be equipped with a heating device. Connect VAT heating device according to manual of
respective heating device.
9. Perform «Setup procedure» to prepare valve for operation.
Note: Without performing the setup procedure the valve will not be able to do pressure control.
Fig. 1 Fig. 2
intermediate
pumping port
IN
OUT

Installation, Operating & Maintenance Instructions
Series 650 DN 200 (I.D. 8”), DeviceNet
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2.3 Tightening torque
Note:
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 (µtotal = (µscrew thread-helicoil + µunder screw head)/2) is bigger than 0.12. Lower
friction coefficients may damage the valve, as the resulting preload force gets too high. Therefore for other friction
coefficients the torque needs to be adapted. Please review design guidelines for Helicoil-Screw connections and make
sure that screws in use are capable to withstand applied torques, are appropriate for the application and are not too long.
Too long screws may damage the valve, the immersion depth should not exceed (hole depth – 1 mm).
Tighten mounting screws of the flanges uniformly in crosswise order. Observe the maximum torque levels in the following
tables.
2.3.1 Mounting with centering rings
ISO-F ISO-F
max. tightening torque
(Nm) max. tightening torque (lbs . ft)
13-15 9-11
hole depth (mm) hole depth (inch)
15 0.59
Refer to «Spare parts / Accessories» for centering rings ordering numbers.
2.3.2 Mounting with O-ring in grooves
ISO-F JIS ASA-LP
ISO-F JIS ASA-LP
max. tightening torque
(Nm) max. tightening torque (lbs . ft)
35-40 35-40 80-90 26-30 26-30 59-67
hole depth (mm) hole depth (inch)
15 0.59

Installation, Operating & Maintenance Instructions
Series 650 DN 200 (I.D. 8”), DeviceNet
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2.4 Admissible forces
Forces from evacuating the system, from the weight of other components, and from baking can lead to deformation and
malfunctioning of the valve. Stress has to be relieved by suitable means, e.g. bellows sections.
Axial tensile or
compressive force «FA»
Bending moment «M»
N lb. Nm lbf.
2000 440 80 60 F
A
M
For a combination of both forces (FAand M) the values are invalid.
Verify that the depth of the mounting screws is min. 1 x thread diameter.
Please contact VAT for more information.
2.5 Requirements to sensor connection
To achieve fast and accurate pressure control a fast
sensor response is required.
Sensor response time: < 50ms
The sensor is normally connected to the chamber by a
pipe. To maintain that the response time is not degraded
by this connection it needs to meet the following
requirements:
Inner diameter of connection pipe: > = 10 mm
Length of connection pipe: < = 300 mm
These conductance guidelines must include all valves
and limiting orifices that may also be present.
Make also sure that there is no obstruction in front of
sensor connection port inside the chamber.
The sensor should also be mounted free of mechanical
shock and vibration.
Dynamic stray magnetic fields may introduce noise to
sensor output and should be avoided or shielded.

Installation, Operating & Maintenance Instructions
Series 650 DN 200 (I.D. 8”), DeviceNet
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2.6 Electrical connection
2.6.1 Ground connection
Recommendation for ground strap between controller and system (chassis)
Material L (Length max.) B1 (min.) B2 (min.) d1 (∅) d2 (∅)
copper tinned 200 mm 25 mm 25 mm 4.5 mm customized
Note: Connection plates of ground strap must be total plane for a good electrical contact!
Note: The connection point at chassis (PE) must be blank metal (not coated).
It is also possible to connect the ground strap at system chamber if it is well connected to PE.
Note: Avoid low chassis cross section to the system PE connection. (Min. same cross section as ground strap)
System
Ground
connection Chassis (PE)
(Protective Earth)
B1
B2
d1 d2
L
Ground strap PE
Recommended torque: 1,3…1,7Nm

Installation, Operating & Maintenance Instructions
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2.6.2 Sensor supply concepts
This valve has a built in sensor power supply (SPS). It supplies ±15 VDC.
Concept:
•External + 24 VDC supplied to POWER connector is converted into ±15 VDC by the valve internal SPS and
supplied to SENSOR connector to supply ±15 VDC sensors. Refer to chapter «Power and sensor connection
(±15 VDC sensors) with optional SPS module» for schematic and correct wiring.
Valve versions:
•650 . . - . . A. - . . . . / 650 . . - . . C. - . . . . SPS module included
Note: The SPS module can be retrofitted. Refer to chapter «Retrofit / replacement procedure» for instruction.

Installation, Operating & Maintenance Instructions
Series 650 DN 200 (I.D. 8”), DeviceNet
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2.6.3 Power and sensor connection (±15 VDC sensors) with optional SPS module
[650 . . - . . A. - . . . . / 650 . . - . . C. - . . . . versions only]
Note:
•Use shielded sensor cable(s). Keep cable as short as possible, but locate it away from noise sources.
•Connect the ±15 VDC sensors at DB–15 female sensor connector exactly as shown in the drawing above. Do not
connect other pins that may damage sensors, power supply or controller!
•Connector: Use only screws with 4-40UNC thread for fastening the connectors!
Pins 4 and 8 must be bridged for operation!
An optional switch would allow for motor interlock
to prevent valve from moving.
Low range sensor may be connected to
sensor 1 or sensor 2 input.
Do configuration accordingly.

Installation, Operating & Maintenance Instructions
Series 650 DN 200 (I.D. 8”), DeviceNet
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2.6.4 DeviceNet®connection
Connector type: Micro-style male (5 pin), connector is shown on panel refer to chapter «Installation into the system».
At valve controller DeviceNet cable
PIN Name Wire color Description
1 Drain Bare Shield
2 V+ Red DeviceNet® power supply +
3 V- Black DeviceNet® power supply -
4 CAN_H White DeviceNet® signal
5 CAN_L Blue DeviceNet® signal
Note: The DeviceNet®interface is galvanic isolated from control unit.
Micro Connector Pinout
Female (sockets)
at DeviceNet cable
1
5
2
3
4
5
1
2
3 4
Male (pins) at
valve controller

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2.6.5 LOGIC I/O
This interface allows for remote operation by means of a command set based on the DeviceNet protocol.
In addition there is a digital input and a digital output. Digital input may only be operated by a switch.
Active digital input has:
higher priority than DeviceNet commands
higher priority than Local commands
Configuration with switch for digital input:
Note: Do not connect other pins than indicated in the schematics above! Connector type: Binder M8 (99-3363-00-04).

Installation, Operating & Maintenance Instructions
Series 650 DN 200 (I.D. 8”), DeviceNet
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2.6.6 Digital input
Pin Signal 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 DeviceNet 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 adjusted 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 chapter: «2.6.5 LOGIC I/O».
Note: 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: «2.6.5 LOGIC I/O» for details about input circuit.
2.6.7 Digital output
Pin Signal 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 chapter: «2.6.5 LOGIC I/O».
2.6.8 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 either use our freeware 'Control View', which can be
downloaded from www.vatvalve.com or purchase our 'Control Performance Analyzer'.
Alternatively the VAT Service Box 2 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 «Local Operation» for details and to «Spare parts / Accessories» for ordering numbers of service cable,
software and Service Box 2.
Connector: Use only screws with 4-40UNC thread for fastening the service port connector!

Installation, Operating & Maintenance Instructions
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3 Operation
Valve opening
Fingers and objects must be kept out of the valve opening and away from moving
parts. Risk of injury.
Do not connect the controller to power before the valve isn’t installed
complete into the
system.
3.1 Introduction
This valve is designed for downstream pressure control in vacuum chambers. It can be employed in a pressure control
mode or a position control mode.
In both cases local or remote operation is possible.

Installation, Operating & Maintenance Instructions
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3.1.1 Local operation
Local operation means that the valve is operated via the service port using a computer or the Service Box 2. When using
a computer, a service cable and a software from VAT are required. You can either download our freeware 'Control View'
from www.vatvalve.com or purchase our 'Control Performance Analyzer'.
These software are beneficial especially for setup, testing and maintenance.
How to start: Connect service cable, start software and push button ‘LOCAL’ to enable for operation. Then enter menu
Setup/Sensor and do sensor configuration according to your application to make sure that you get the correct pressure
displayed.
‘Control view’ supports:
- parameter setup
- manual control
- numeric monitoring
- basic diagnostic
'Control Performance Analyzer'
supports:
- parameter setup
- manual control
- sequence control
- numeric and graphical
monitoring
- data recording
- data analysis
- advanced diagnostic
When communication to service port is interrupted the valve will change to remote operation.
So when service cable will be disconnected or software will be shut down, the valve returns
automatically to remote operation.
This may result in an immediate movement of the valve depending on remote control.
Refer to «Spare parts / Accessories» for ordering numbers of service cable, software and Service Box 2.
3.1.2 Remote operation
This product is equipped with a DeviceNet interface to allow for remote operation. See section «DeviceNet Interface» for
details. ‘Control View’ software, 'Control Performance Analyzer' software or 'Service Box 2' may be used for monitoring
during remote control.
Note: In case ‘Control View’ or ‘Control Performance Analyzer’ software is connected to valve make sure ‘REMOTE’
button is pushed to enable for remote operation. In case Service Box 2 is connected to valve make sure the LED on
button ‘LOCAL’ is OFF for remote operation.

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3.1.3 Safety mode
By means of an external switch (see connection diagrams «Electrical connection») the motor power supply can be
interrupted. In this case the valve enters the ‘safety mode’. This motor interlock prevents the valve from moving (e.g.
maintenance work). Data reading from the control unit remains possible.
When motor interlock is active during power up the valve directly enters the ‘safety mode’ and is not able to synchronize.
Display shows ‘D C’ or ‘D999’. In this case synchronization cycle will be done when motor interlock is deactivated. Then
Display shows ‘INIT’ for a moment followed by ‘SYNC’.
When ‘safety mode’ is entered from operation (i.e. pressure control mode), the unit will automatically switch to position
control mode and remain at current position. Once motor interlock is deactivated the unit remains in position control mode.
3.1.4 Service indication
This product is able to indicate that the valve unit needs to be cleaned, or an obstruction is present.
A service request is indicated when the control unit detects that motor steps are apparently not effective. This may happen
when the valve unit is heavily contaminated. These ‚lost‘ steps are recognized and will be repeated to attempt target
position in the short term. But in the medium term the valve unit requires cleaning or inspection.
‘Service request’ (SR) would be indicated on the display or could be read via remote operation. Refer to «Display
information» for details.
3.2 Operation under increased temperature
Hot valve
Heated valve may result in minor or moderate injury.
Do not touch valve and heating device during operation. Once heating is switched off
(valve and system) await until the valve is cooled down complete before doing any
work.
This valve may be operated in the temperature range mentioned in chapter «Technical data».
3.3 Behavior during power up
Reaction of valve:
Valve position before
power up: Valve power up configuration = closed
(default) Valve power up configuration = open
Closed (isolated) Valve remains closed.
Display shows alternately ‘C C’ and
‘INIT’.
Synchronization will be done when first
movement command is received.
Valve runs to max. throttle position to
detect the limit stops to synchronize.
Display shows configuration of product
resp. ‘SYNC’ until synchronization is
done.
Valve position after power up is open.
Valve runs to max. throttle position to detect limit stop for synchronization.
Display shows configuration of product resp. ‘SYNC’ until synchronization is
done.
All other than closed (not isolated)
Valve position after power up is closed
Valve position after power up is open
Refer also to chapter «Display information».

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3.4 Behavior in case of power failure
Reaction of valve:
Valve position before
power failure: With Power Failure Option (PFO)
650 . . - . . H. - . . . . / 650 . . - . . C . - . . . .
650 . . - . . U. - . . . . / 650 . . - . . W . - . . . .
Closed (isolated)
Valve open or in any intermediate
position
Valve will close or open depending on valve configuration *).
Default is close.
Display indicates F.
*) Provided that battery pack of the VAT controller is charged. Charging time after power up is 2 minutes max..
All parameters are stored in a power fail save memory.