VAT Series 651 Assembly instructions

Installation, Operating & Maintenance Instructions
Series 651 DN 320-400 (I.D. 12“ - 16”), Logic
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 267736ED
2008-02-26 1/53
Pendulum control & isolation valve
with extended control range
with Logic interface
This manual is valid for the valve ordering number(s):
651 . . - . . GC - . . . . (1 sensor input)
651 . . - . . GE - . . . . (2 sensor inputs)
651 . . - . . AC - . . . . (1 sensor input / ±15V SPS)
651 . . - . . AE - . . . . (2 sensor inputs / ±15V SPS)
651 . . - . . HC - . . . . (1 sensor input / PFO)
651 . . - . . HE - . . . . (2 sensor inputs / PFO)
651 . . - . . CC - . . . . (1 sensor input / ±15V SPS / PFO)
651 . . - . . CE - . . . . (2 sensor inputs / ±15V SPS / PFO)
SPS = Sensor Power Supply PFO = Power Failure Option
configured with firmware 651P.1E.05
The fabrication number is indicated on each product as per the label
below (or similar):
made in Switzerland
Fabrication No.:
patented
. .
651
. .
–
. . . .
–
. . . ./ . . . .
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!
Product is in conformity with EC guidelines,
if applicable!
Loaded springs and/or air cushions are potential
hazards!
Disconnect electrical power and compressed air
lines. Do not touch parts under voltage!
Wear gloves!
Read these «Installation, Operating & Maintenance Instructions» and the enclosed «General
Safety Instructions» carefully before you start any other action!

Installation, Operating & Maintenance Instructions
Series 651 DN 320-400 (I.D. 12“ - 16”), Logic
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 267736ED
2008-02-26 2/53
Contents:
1Use of product .......................................................................................................................................................... 3
1.1 Technical data ................................................................................................................................................. 3
2Installation................................................................................................................................................................. 6
2.1 Unpacking........................................................................................................................................................ 6
2.2 Installation into the system .............................................................................................................................. 6
2.3 Tightening torque............................................................................................................................................. 8
2.3.1 Mounting with centering rings.............................................................................................................. 8
2.3.2 Mounting with O-ring in grooves.......................................................................................................... 9
2.4 Admissible forces............................................................................................................................................. 9
2.5 Requirements to sensor connection.............................................................................................................. 10
2.6 Electrical connection...................................................................................................................................... 10
2.6.1 Sensor supply concepts.................................................................................................................... 10
2.6.2 Power and sensor connection (+24 VDC sensors)............................................................................ 11
2.6.3 Power and sensor connection (±15 VDC sensors) without optional SPS module............................. 12
2.6.4 Power and sensor connection (±15 VDC sensors) with optional SPS module.................................. 13
2.6.5 Logic interface connection................................................................................................................. 14
2.6.6 Service port connection..................................................................................................................... 14
3Operation................................................................................................................................................................ 15
3.1 Introduction.................................................................................................................................................... 15
3.1.1 Local operation.................................................................................................................................. 15
3.1.2 Remote operation.............................................................................................................................. 16
3.1.3 Safety mode ...................................................................................................................................... 16
3.2 Operation under increased temperature........................................................................................................ 16
3.3 Behavior during power up.............................................................................................................................. 16
3.4 Behavior in case of power failure................................................................................................................... 17
3.5 Display information ........................................................................................................................................ 17
3.6 Setup procedure ............................................................................................................................................ 19
3.6.1 Interface configuration....................................................................................................................... 19
3.6.2 Valve and sensor configuration......................................................................................................... 20
3.6.3 ZERO................................................................................................................................................. 20
3.6.4 LEARN............................................................................................................................................... 21
3.7 Close valve .................................................................................................................................................... 23
3.8 Open valve..................................................................................................................................................... 23
3.9 Position control .............................................................................................................................................. 23
3.10 Pressure control............................................................................................................................................. 23
3.10.1 Operation with 2 sensors................................................................................................................... 24
3.10.2 Tuning of control performance........................................................................................................... 25
3.11 Logic interface ............................................................................................................................................... 28
3.11.1 Functions and Wiring ........................................................................................................................ 29
3.11.2 Digital inputs...................................................................................................................................... 31
3.11.3 Digital outputs.................................................................................................................................... 33
3.11.4 Analog inputs and outputs................................................................................................................. 34
4Trouble shooting..................................................................................................................................................... 35
5Maintenance & repairs............................................................................................................................................ 37
5.1 Maintenance procedures ............................................................................................................................... 38
5.2 Option board.................................................................................................................................................. 44
5.2.1 Durability of power fail battery ........................................................................................................... 44
5.2.2 Retrofit / replacement procedure....................................................................................................... 45
6Drawing................................................................................................................................................................... 48
7Spare parts............................................................................................................................................................. 49
7.1 Control unit .................................................................................................................................................... 49
7.2 Valve unit....................................................................................................................................................... 50
7.3 Accessories ................................................................................................................................................... 51
7.3.1 Centering ring with Viton o-ring......................................................................................................... 52
8Warranty................................................................................................................................................................. 53

Installation, Operating & Maintenance Instructions
Series 651 DN 320-400 (I.D. 12“ - 16”), Logic
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 267736ED
2008-02-26 3/53
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
Power input 1) (α)+24 VDC (±10%) @ 0.5 V pk-pk max. [connector: POWER]
[651 . . - . . A. - . . . . / 651 . . - . . G. - . . . . ]
[651 . . - . . C. - . . . . / 651 . . - . . H. - . . . . ]
50 W max. (operation of valve with max. load) without PFO 4)
50 W plus 10 W for PFO 4)
Sensor power supply 2) (β)
[651 . . - . . A. - . . . . / 651 . . - . . C. - . . . . ]
Input
Output
+24 VDC / 1500 mA max.
±15 VDC (±5%) / 1000 mA max.
[connector: POWER]
[connector: SENSOR]
Sensor power supply 2) (β)
[651 . . - . . G. - . . . . / 651 . . - . . H. - . . . . ]
Input
Output
+ 24 VDC resp. ± 15 VDC
same as input but:
2.0 A max. at ± 15 VDC
1.5 A max. at + 24 VDC
[connector: POWER]
[connector: SENSOR]
Calculation of complete power consumption:
Ptot = α+ β
whereas βdepends on sensor supply concept and sensor power consumption.

Installation, Operating & Maintenance Instructions
Series 651 DN 320-400 (I.D. 12“ - 16”), Logic
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 267736ED
2008-02-26 4/53
Control and actuating unit (continuation)
Sensor input
Signal input
ADC resolution
Sampling time
0-10 VDC / Ri>100 kΩ
0.23 mV
10 ms
[connector: SENSOR]
Digital inputs 3)
±24 VDC max. [connector: INTERFACE]
Digital outputs 3)
Input voltage
Input current
Breaking capacity
70 VDC or 70 V peak max.
0.5 ADC or 0.5 A peak max.
10 W max.
[connector: INTERFACE]
Analog outputs 3)
0-10 VDC / 1 mA max. [connector: INTERFACE]
PFO 4) battery pack
[651 . . - . . C. - . . . . / 651 . . - . . H. - . . . . ]
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
0.1% of sensor full scale
DN 320
12"
(65150 - ....)
DN 350
14"
(65151 - ....)
DN 400
16"
(65152 - ....)
Position resolution / position control capability
13333 steps
(full stroke) 13422 steps (full stroke) 13511 steps (full stroke)
Closing time throttling only
1.1 s typ. (full stroke) 1.3 s typ. (full stroke) 1.5 s typ. (full stroke)
Opening time throttling only
1.1 s typ. (full stroke) 1.3 s typ. (full stroke) 1.5 s typ. (full stroke)
Closing time throttling & isolation
6 s typ. (full stroke) 6 s typ. (full stroke) 6 s typ. (full stroke)
Opening time throttling & isolation
6 s typ. (full stroke) 6 s typ. (full stroke) 6 s typ. (full stroke)
1) Internal overcurrent protection by a PTC device.
2) Refer to chapter «Sensor supply concepts» for details.
3) Refer to chapter «Schematics» for details.
4) PFO = Power Failure Option. Refer to «Behavior in case of power failure» for details.

Installation, Operating & Maintenance Instructions
Series 651 DN 320-400 (I.D. 12“ - 16”), Logic
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 267736ED
2008-02-26 5/53
Valve unit
Pressure range at 20°C
- Aluminum (651 . . - . A . . - . . . . ) 1 x 10E-8 mbar to 1.2 bar (abs)
- Aluminum hard anodized (651 . . - . H . . - . . . . ) 1 x 10E-6 mbar to 1.2 bar (abs)
- Aluminum nickel coated (651 . . - . I . . - . . . . )
1 x 10E-8 mbar to 1.2 bar (abs)
Leak rate to outside at 20°C
- Aluminum (651 . . - . A . . - . . . . ) 1 x 10E-9 mbar l/s
- Aluminum hard anodized (651 . . - . H . . - . . . . ) 1 x 10E-5 mbar l/s
- Aluminum nickel coated (651 . . - . I . . - . . . . )
1 x 10E-9 mbar l/s
Leak rate valve seat at 20°C
- Aluminum (651 . . - . A . . - . . . . ) 1 x 10E-9 mbar l/s
- Aluminum hard anodized (651 . . - . H . . - . . . . ) 1 x 10E-4 mbar l/s
- Aluminum nickel coated (651 . . - . I . . - . . . . )
1 x 10E-9 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
horizontally only
Wetted materials
- Body (651 . . - . A . . - . . . . ) Aluminum 3.2315 (AA6082)
- Body (651 . . - . H . . - . . . . )
Aluminum 3.2315 (AA6082) hard anodized
- Body (651 . . - . I . . - . . . . ) Aluminum 3.2315 (AA6082) nickel coated
- Pendulum plate (651 . . - . A . . - . . . . ) Aluminum 3.2315 (AA6082), 1.4310 (301), PTFE
- Pendulum plate (651 . . - . H . . - . . . . )
Aluminum 3.2315 (AA6082) hard anodized, 1.4310 (301), PTFE
- Pendulum plate (651 . . - . I . . - . . . . ) Aluminum 3.2315 (AA6082) nickel coated, 1.4310 (301), PTFE
- Sealing ring (651 . . - . A . . - . . . . ) Aluminum 3.2315 (AA6082), 1.4306 (304L)
- Sealing ring (651 . . - . H . . - . . . . )
Aluminum 3.2315 (AA6082) hard anodized, 1.4306 (304L)
- Sealing ring (651 . . - . I . . - . . . . ) Aluminum 3.2315 (AA6082) nickel coated, 1.4306 (304L)
- Other parts Stainless steel 316L (1.4404 or 1.4435), 1.4122, 1.4310 (301),
1.4303 (304), 1.4571, A2 (304)
- Seals Viton®(standard). Other materials available.
Seal materials are declared on dimensional drawing of specific valve ordering
number.
DN 320
12"
(65150 - ....)
DN 350
14"
(65151 - ....)
DN 400
16"
(65152 - ....)
Max. differential pressure on plate during isolation
1200 mbar in either
direction 1200 mbar in either direction 1200 mbar in either direction
Max. differential pressure on plate
during opening and throttling
5 mbar 5 mbar 5 mbar
Min. controllable conductance
(N2molecular flow)
3.2 l/s 3.5 l/s 4.0 l/s
Dimensions Refer to dimensional drawing of specific valve ordering number
(available on request)

Installation, Operating & Maintenance Instructions
Series 651 DN 320-400 (I.D. 12“ - 16”), Logic
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 267736ED
2008-02-26 6/53
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.

Installation, Operating & Maintenance Instructions
Series 651 DN 320-400 (I.D. 12“ - 16”), Logic
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 267736ED
2008-02-26 7/53
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: Input for second sensor is available on 651 . . - . . . E- . . . . versions only.
5. Connect valve to Logic [4] (connector: INTERFACE). Refer to «Logic 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 651 DN 320-400 (I.D. 12“ - 16”), Logic
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 267736ED
2008-02-26 8/53
2.3 Tightening torque
Tighten mounting screws of the flanges uniformly in crosswise order. Observe the maximum torque levels in the following
table. Higher tightening torques deforms the valve body and may lead to malfunction of the valve.
2.3.1 Mounting with centering rings
ISO-F ISO-F
Valve size max. tightening torque
(Nm) max. tightening torque (lbs . ft)
DN320 / 12“
(65150 - . . . . - . . . . ) 17-20 13-15
DN350 / 14“
(65151 - . . . . - . . . . ) – –
DN400 / 16“
(65152 - . . . . - . . . . ) 17-20 13-15
hole depth (mm) hole depth (inch)
DN320 / 12“
(65150 - . . . . - . . . . ) 18 0.71
DN350 / 14“
(65151 - . . . . - . . . . ) – –
DN400 / 16“
(65152 - . . . . - . . . . ) 20 0.79
Caution: Make sure that screws are not too long otherwise the valve body may be damaged.
Note: Use slightly lubricated screws.
Refer to «Spare parts and accessories» for centering rings ordering numbers.

Installation, Operating & Maintenance Instructions
Series 651 DN 320-400 (I.D. 12“ - 16”), Logic
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 267736ED
2008-02-26 9/53
2.3.2 Mounting with O-ring in grooves
ISO-F JIS ASA-LP
ISO-F JIS ASA-LP
Valve size max. tightening torque
(Nm) max. tightening torque (lbs . ft)
DN320 / 12“
(65150 - . . . . - . . . . ) 65-70
65-70 80-90 48-52 48-52 59-67
DN350 / 14“
(65151 - . . . . - . . . . ) – 65-70 – – 48-52 –
DN400 / 16“
(65152 - . . . . - . . . . ) 65-70
115-120
230-240
48-52 85-89 170-178
hole depth (mm) hole depth (inch)
DN320 / 12“
(65150 - . . . . - . . . . ) 18 18 18 0.71 0.71 0.71
DN350 / 14“
(65151 - . . . . - . . . . ) – 18 – – 0.71 –
DN400 / 16“
(65152 - . . . . - . . . . ) 20 25 25 0.79 0.98 0.98
Caution: Make sure that screws are not too long otherwise the valve body may be damaged.
Note: These torques are valid if depth of the mounting screws is min. 1 x thread diameter. Make sure that screws in use
are capable to withstand applied torques. Lubricate screws slightly.
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»
Valve size N lb. Nm lbf.
DN320 / 12“
(65150 - . . . . - . . . . ) 3000 660 120 90
DN350 / 14“
(65151 - . . . . - . . . . ) 3500 770 140 105
DN400 / 16“
(65152 - . . . . - . . . . ) 4000 880 160 120
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.
F
A
M

Installation, Operating & Maintenance Instructions
Series 651 DN 320-400 (I.D. 12“ - 16”), Logic
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 267736ED
2008-02-26 10/53
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.
2.6 Electrical connection
2.6.1 Sensor supply concepts
This valve offers 3 alternative concepts to supply the sensor(s) with power. This depends on the sensor type and valve
version that is used. This valve is available with an optional sensor power supply module (SPS) that converts ±15 VDC
from the 24 VDC.
Concepts:
•External + 24 VDC supplied to POWER connector is feed through to SENSOR connector to supply 24 VDC
sensors. Refer to chapter «2.6.2 Power and sensor connection (+24 VDC sensors)» for schematic and correct
wiring.
•External ±15 VDC supplied to POWER connector is feed through to SENSOR connector to supply ±15 VDC
sensors. Refer to chapter «2.6.3 Power and sensor connection (±15 VDC sensors) without optional SPS module»
for schematic and correct wiring.
•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 «2.6.4 Power and sensor
connection (±15 VDC sensors) with optional SPS module» for schematic and correct wiring.
Valve versions:
•651 . . - . . G. - . . . . / 651 . . - . . H. - . . . . SPS module not included
•651 . . - . . A. - . . . . / 651 . . - . . C. - . . . . SPS module included
Note: The SPS module can be retrofitted. Refer to chapter «Retrofit / replacement procedure» for instruction.

Installation, Operating & Maintenance Instructions
Series 651 DN 320-400 (I.D. 12“ - 16”), Logic
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 267736ED
2008-02-26 11/53
2.6.2 Power and sensor connection (+24 VDC sensors)
[651 . . - . . G. - . . . . / 651 . . - . . H. - . . . . versions recommended]
Note:
•Use shielded sensor cable(s). Keep cable as short as possible, but locate it away from noise sources.
•Connect the ±24 VDC sensors at DB–15 female sensor connector exactly as shown in the drawing above.
Do not connect other pins, that may damage 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 651 DN 320-400 (I.D. 12“ - 16”), Logic
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 267736ED
2008-02-26 12/53
2.6.3 Power and sensor connection (±15 VDC sensors) without optional SPS module
[651 . . - . . G. - . . . . / 651 . . - . . H. - . . . . 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 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 651 DN 320-400 (I.D. 12“ - 16”), Logic
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 267736ED
2008-02-26 13/53
2.6.4 Power and sensor connection (±15 VDC sensors) with optional SPS module
[651 . . - . . A. - . . . . / 651 . . - . . 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 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 651 DN 320-400 (I.D. 12“ - 16”), Logic
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 267736ED
2008-02-26 14/53
2.6.5 Logic interface connection
Refer to «Schematics» for wiring information.
2.6.6 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 a 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
Series 651 DN 320-400 (I.D. 12“ - 16”), Logic
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 267736ED
2008-02-26 15/53
3 Operation
Operation is allowed after completion of the installation procedure only.
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.
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.

Installation, Operating & Maintenance Instructions
Series 651 DN 320-400 (I.D. 12“ - 16”), Logic
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 267736ED
2008-02-26 16/53
3.1.2 Remote operation
This product is equipped with a Logic interface to allow for remote operation. See section «Logic 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.
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.
3.2 Operation under increased temperature
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».

Installation, Operating & Maintenance Instructions
Series 651 DN 320-400 (I.D. 12“ - 16”), Logic
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 267736ED
2008-02-26 17/53
3.4 Behavior in case of power failure
Reaction of valve:
Valve position before
power failure: Without Power Failure Option (PFO)
651 . . - . . G. - . . . .
651 . . - . . A. - . . . .
651 . . - . . T. - . . . .
651 . . - . . V. - . . . .
With Power Failure Option (PFO)
651 . . - . . H. - . . . .
651 . . - . . C. - . . . .
651 . . - . . U. - . . . .
651 . . - . . W. - . . . .
Closed (isolated) Valve remains closed.
Valve open or in any intermediate
position Sealing ring moves down and blocks the pendulum plate at the current position.
Valve will close or open depending
on valve configuration *).
Default is not defined.
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.
3.5 Display information
There is a 4 digit display located on the panel.
It displays configuration, status and position
information. For details refer to following
tables.
Display
1 2 3 4

Installation, Operating & Maintenance Instructions
Series 651 DN 320-400 (I.D. 12“ - 16”), Logic
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 267736ED
2008-02-26 18/53
Power up:
Description Digit 1
Digit 2 Digit 3 Digit 4
1 E 0 0
At first all dots are illuminated
then configuration is displayed:
•Firmware version [e.g. 1E00]
(1st information for about 2s)
•Controller configuration
(2nd information for about 2s)
In case D C or D999 is displayed,
motor interlock is active. Refer to
«Safety mode» for details.
If valve is closed (isolated) display
shows alternately C C and INIT.
Synchronization will be done
when first movement command is
received.
1
= Logic interface
0
= basic
1
= with SPS1)
2
= with PFO2)
3
= with SPS1) and PFO2)
1
= 1 sensor version
2
= 2 sensor version
SYNC indicates that
synchronization is running. S Y N C
1) SPS = optional ±15 VDC Sensor Power Supply module 2) PFO = optional Power Failure Option
Operation:
Description / Mode Digit 1 Digit 2 Digit 3 Digit 4
PRESSURE CONTROL mode P
POSITION CONTROL mode V
Valve closed C
Valve open O
HOLD (position frozen) activated H
ZERO running Z
LEARN running L
Safety mode established. Refer to «Safety
mode» for details. D
0 . . . 100
= valve position (%, 0 = closed / 100 = open)
Power failure F
Service request 1) S R
1) If SR is blinking alternatively with the actual mode display (e.g. P.11 ⇔..SR) the valve requires cleaning.

Installation, Operating & Maintenance Instructions
Series 651 DN 320-400 (I.D. 12“ - 16”), Logic
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 267736ED
2008-02-26 19/53
Errors:
Description Digit 1
Digit 2 Digit 3 Digit 4
Compressed air failure
(< 4 bar / 55 psi) A I R f
Compressed air on exhaust A I R x
Fatal error occurred E Error code. Refer to «Trouble shooting» for details
3.6 Setup procedure
To enable this valve for pressure control setup steps 1 to 5 must be performed.
In case position control is required only it’s sufficient to perform steps 1 and 2.
Setup step Description
1 POWER UP Turn on external + 24VDC power supply (and external ±15 VDC for sensor power
supply if required). Refer to chapter «Behavior during power up» for details.
2 INTERFACE
CONFIGURATION Refer to chapter «Interface configuration» for details.
3 VALVE
CONFIGURATION Basic configurations of the valve must be adapted according to application needs.
Refer to chapter «Valve configuration» for details.
4 ZERO Compensation of the sensor offset voltage.
Refer to chapter «ZERO» for details.
5 LEARN Determination of the vacuum system characteristic to accommodate the PID
controller. Refer to chapter «LEARN» for details.
Note: Without LEARN the valve is not able to run pressure control
3.6.1 Interface configuration
Interface configuration must be adapted according to application needs.
•Functionality of digital inputs CLOSE VALVE and OPEN VALVE must be selected.
These may be configured as ‘not inverted‘ or ‘inverted‘. Default is ‘not inverted‘.
•LEARN range configuration for remote operation must be selected.
This may either be ‘full range’ or pressure limit according of analog SETPOINT input. Default is ‘full range‘.
Local operation:
(‘Control View’, ‘Control Performance Analyzer’ or
‘Service Box 2‘)
Remote operation:
Do configuration in menu ‘Setup / Interface’. Note: It’s not possible to do ‘Interface configuration‘
via remote operation.

Installation, Operating & Maintenance Instructions
Series 651 DN 320-400 (I.D. 12“ - 16”), Logic
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 267736ED
2008-02-26 20/53
3.6.2 Valve and sensor configuration
Basic valve configuration must be adapted according to application needs.
•Definition of valve plate position (CLOSE or OPEN) after power up sequence. Default is ‘close‘.
•Definition of valve plate position (CLOSE or OPEN) in case of a power failure. Default is ‘not defined‘.
Only for versions that have Power Fail Option equipped [651 . . - . . C. - . . . . or 651 . . - . . H. - . . . . ].
•ZERO function. This may be ‘disabled’ or ‘enabled’. Default is ‘enabled‘. Refer also to «ZERO».
•Sensor configuration for 2 sensor version [651 . . - . . . E- . . . .].
Refer also to «Pressure control operation with 2 sensors».
Local operation:
(‘Control View’, ‘Control Performance Analyzer’ or
‘Service Box 2‘)
Remote operation:
1. Do power up configuration in menu
‘Setup / Valve’.
2. Do power fail configuration in menu
‘Setup / Valve’. Note: It’s not possible to do ‘Valve and sensor
configuration‘ via remote operation.
3. Enable or disable ZERO function in menu
‘Setup / Sensor’.
4. Do 2 sensor configuration in menu
‘Setup / Sensor’.
3.6.3 ZERO
ZERO allows for the compensation of the sensor offset voltage.
When ZERO is performed the current value at the sensor input is equated to pressure zero. In case of a 2 sensor system
both sensor inputs will be adjusted. A max. offset voltage of +/-1.4V can be compensated. The offset value can be read
via local and remote operation.
Local operation:
(‘Control View’, ‘Control Performance Analyzer’ or
‘Service Box 2‘)
Remote operation:
(Refer to chapter «Digital inputs» for details)
1. Send OPEN VALVE
2. Wait until process chamber is evacuated and
sensor signal is not shifting anymore.
Go to menu ‘Zero / ZERO’ and follow instructions.
3. Send ZERO
Note: Do not perform ZERO as long as pressure gauge voltage is shifting otherwise incorrect pressure reading is the
result. Refer to manual of sensor manufacturer for warm up time.
Note: Do not perform ZERO, if the base pressure of your vacuum system is higher than 1‰ of sensor full scale. We
recommend disabling ZERO function in this case; refer to «Valve configuration» of the setup procedure. Otherwise
incorrect pressure reading is the result.