VAT 612 Series Assembly instructions

Installation, Operating & Maintenance Instructions
Series 612 DN 50 (I.D. 2”), RS485
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 290089EA
2011-06-21 1/65
Butterfly Pressure Control Valve
with RS485 interface
This manual is valid for the valve ordering number(s):
61234-KAAJ-0002
configured with firmware 612P.1E.65
The fabrication number is indicated on each product as per the label
below (or similar):
made in Switzerland
FabricationNo.:
612
. .
–
. . . .
–
. . . . / . . . .
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 612 DN 50 (I.D. 2”), RS485
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 290089EA
2011-06-21 2/65
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 612 DN 50 (I.D. 2”), RS485
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 290089EA
2011-06-21 3/65
Contents:
1Use of product .......................................................................................................................................................... 5
1.1 Technical data ................................................................................................................................................. 6
1.1.1 Valve unit............................................................................................................................................. 7
2Installation................................................................................................................................................................. 8
2.1 Unpacking........................................................................................................................................................ 8
2.2 Installation into the system .............................................................................................................................. 8
2.3 Tightening torque........................................................................................................................................... 10
2.3.1 Mounting of ISO-KF flanges.............................................................................................................. 10
2.4 Admissible forces........................................................................................................................................... 10
2.4.1 Admissible forces at controller .......................................................................................................... 11
2.5 Requirements to sensor connection.............................................................................................................. 12
2.6 Electrical connection...................................................................................................................................... 12
2.6.1 Ground connection............................................................................................................................ 13
2.6.2 Sensor supply concepts.................................................................................................................... 14
2.6.3 Power and sensor connection (±15 VDC sensors) using SPS module............................................. 15
2.6.4 RS485 interface connection.............................................................................................................. 16
2.6.5 Service port connection..................................................................................................................... 16
3Operation................................................................................................................................................................ 16
3.1 Introduction.................................................................................................................................................... 16
3.1.1 Local operation.................................................................................................................................. 17
3.1.2 Remote operation.............................................................................................................................. 17
3.1.3 Safety mode ...................................................................................................................................... 18
3.1.4 Service indication .............................................................................................................................. 18
3.2 Operation under increased temperature........................................................................................................ 18
3.3 Behaviour during power up............................................................................................................................ 18
3.4 Behavior in case of power failure................................................................................................................... 19
3.5 Display information ........................................................................................................................................ 19
3.6 Setup procedure ............................................................................................................................................ 21
3.6.1 Interface configuration....................................................................................................................... 21
3.6.2 Valve and sensor configuration......................................................................................................... 22
3.6.3 ZERO................................................................................................................................................. 23
3.6.4 LEARN............................................................................................................................................... 23
3.7 Close valve .................................................................................................................................................... 25
3.8 Open valve..................................................................................................................................................... 25
3.9 Position control .............................................................................................................................................. 25
3.10 Pressure control............................................................................................................................................. 25
3.10.1 Tuning of control performance........................................................................................................... 26
3.11 RS485 interface............................................................................................................................................. 29
3.11.1 Settings ............................................................................................................................................. 29
3.11.2 Schematics........................................................................................................................................ 29
3.11.3 RS485 network topology ................................................................................................................... 32
3.11.4 Connection cable drawing................................................................................................................. 32
3.11.5 Digital inputs...................................................................................................................................... 33
3.11.6 Command syntax............................................................................................................................... 34
3.11.7 Addressed communication................................................................................................................ 34
3.11.8 Control commands ............................................................................................................................ 35
3.11.9 Inquiry commands............................................................................................................................. 36
3.11.10Setup commands .............................................................................................................................. 41
3.11.11Error messages................................................................................................................................. 46
4Trouble shooting..................................................................................................................................................... 47
5Maintenance & repairs............................................................................................................................................ 50
5.1 Maintenance procedures ............................................................................................................................... 51
5.2 Option board.................................................................................................................................................. 56
5.2.1 Durability of power fail battery........................................................................................................... 56
5.2.2 Retrofit / replacement procedure....................................................................................................... 57
6Drawing................................................................................................................................................................... 60

Installation, Operating & Maintenance Instructions
Series 612 DN 50 (I.D. 2”), RS485
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 290089EA
2011-06-21 4/65
7Spare parts............................................................................................................................................................. 61
7.1 Valve unit....................................................................................................................................................... 61
7.2 Seals and grease........................................................................................................................................... 61
7.3 Control and actuating unit.............................................................................................................................. 62
7.4 Accessories ................................................................................................................................................... 63
7.4.1 Centering ring with Viton o-ring......................................................................................................... 63
8Warranty................................................................................................................................................................. 64

Installation, Operating & Maintenance Instructions
Series 612 DN 50 (I.D. 2”), RS485
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 290089EA
2011-06-21 5/65
1 Use of product
This product is a Butterfly control valve for downstream pressure control in vacuum systems.
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.

Installation, Operating & Maintenance Instructions
Series 612 DN 50 (I.D. 2”), RS485
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 290089EA
2011-06-21 6/65
1.1 Technical data
Control and actuating unit
Input voltage 1) +24 VDC (±10%) @ 0.5 V pk-pk max. [connector: POWER]
Power consumption 74 W [connector: POWER]
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]
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) (optional) 0-10 VDC / 1 mA max. [connector: INTERFACE]
PFO4) battery pack
Charging time
Durability
2 minutes max.
up to 10 years @ 25°C ambient
refer to «Durability of power fail battery» for details
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 20000 (full stroke)
closing 0.3 s typ.
Actuating time opening 0.3 s typ.
Utilizable valve torque 2.5 Nm
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 612 DN 50 (I.D. 2”), RS485
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 290089EA
2011-06-21 7/65
1.1.1 Valve unit
Valve unit
Pressure range at 20°C 1 x 10E-8 mbar to 1.2 bar (abs)
Leak rate to outside at 20°C1 x 10E-9 mbar l/s
Cycles until first service 2’000’000 (unheated and under clean conditions)
Admissible operating temperature 10°C to +150°C
Mounting position Any.
Control unit for ISO-KF version needs support when mounted on horizontal
piping and control unit does not hang.
Wetted materials
- Body Aluminium AA6082 (3.2315)
- Plate Aluminium AA6082 (3.2315)
- Shaft Stainless steel 316L (1.4404 or 1.4435 )
- Plate screws
- Rotary feedthrough seals atmosphere side
Stainless steel 316L (A4)
FKM (e.g. Viton®)
- Rotary feedthrough seals vacuum side FKM (e.g. Viton®)
- Slide bearing for shaft iglidur® X
Max. differential pressure on plate 1000 mbar
Min. controllable conductance (Cmin)
[N2molecular flow]
0.3 l/s
Conductance in open position [N2molecular flow] 150 l/s
Dimensions Refer to dimensional drawing of specific valve ordering number
(available on request)

Installation, Operating & Maintenance Instructions
Series 612 DN 50 (I.D. 2”), RS485
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 290089EA
2011-06-21 8/65
2 Installation
2.1 Unpacking
Valves DN63 / 2½" and larger must not be lifted solely by the actuator.
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.
Connection overview Connectors at controller panel
Ground
connection

Installation, Operating & Maintenance Instructions
Series 612 DN 50 (I.D. 2”), RS485
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 290089EA
2011-06-21 9/65
1. Install valve [1] into the vacuum system.
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.
Note: Control unit of valves with ISO-KF flanges (612 . . – K. . . ) needs support when mounted on horizontal piping
and control unit does not hang.
2. Install a ground connection cable at controller. Refer to «Electrical connection»
3. Install sensor(s) [2] according to the recommendations of the sensor manufacturer and directives given under
«Requirements to sensor connection».
4. Connect pressure sensor cable [3] to sensor(s) and then to valve (connector: SENSOR). Refer to chapter «Electrical
connection» for correct wiring.
Note: 61234-KAAJ-0002 supports 1 sensor(s).
5. Connect valve to remote control unit [4] (connector: INTERFACE). Refer to «RS485 connection» 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 may optionally be equipped with a heating device. Connect VAT heating device according to manual of
respective heating device.
8. Perform «Setup procedure» to prepare valve for operation.
Note: Without performing the setup procedure the valve will not be able to do pressure control.

Installation, Operating & Maintenance Instructions
Series 612 DN 50 (I.D. 2”), RS485
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 290089EA
2011-06-21 10/65
2.3 Tightening torque
2.3.1 Mounting of ISO-KF flanges
Tightening torques for ISO-KF flange connections depends on the type of seal which is used. Follow recommendations of
seal manufacturer.
2.4 Admissible forces
Forces from the weight of other components can lead to deformation of the valve body and to malfunction of the valve.
The stress has to be relieved by suitable means. The following forces are admissible:
Axial tensile or
compressive force «FA» Bending moment «M»
N lb. Nm lbf.
150 34 11 8
MFA

Installation, Operating & Maintenance Instructions
Series 612 DN 50 (I.D. 2”), RS485
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 290089EA
2011-06-21 11/65
2.4.1 Admissible forces at controller
Attention!
Do not pushing, shocking load, or stressing the valve controller!
Do not deposit anything at valve controller!
The admissible force at valve controller in regards to the pedestal is shown in table below. In case higher force is
applied, the pedestal could be permanently damaged!
Admissible force «F»
Overview
F= Force
a= middle of aluminium part of controller (b/ 2), c= pedestal
400 N
aa
F
bc
aa
F
bc

Installation, Operating & Maintenance Instructions
Series 612 DN 50 (I.D. 2”), RS485
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 290089EA
2011-06-21 12/65
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

Installation, Operating & Maintenance Instructions
Series 612 DN 50 (I.D. 2”), RS485
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 290089EA
2011-06-21 13/65
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 (FE) 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)
Valve controller
System
Ground connection
Chassis (FE)
(Functional Earth)
B1
B2
d1 d2
L
Ground strap PE
Recommended torque: 1,3…1,7Nm

Installation, Operating & Maintenance Instructions
Series 612 DN 50 (I.D. 2”), RS485
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 290089EA
2011-06-21 14/65
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:
•612 . . - . . A. - . . . . / 612 . . - . . C. - . . . . SPS module included
Note: The SPS module can be retrofitted. Refer to chapter «Retrofit / replacement procedure» for instruction.

Installation, Operating & Maintenance Instructions
Series 612 DN 50 (I.D. 2”), RS485
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 290089EA
2011-06-21 15/65
2.6.3 Power and sensor connection (±15 VDC sensors) using SPS module
[612 . . - . . A. - . . . . / 612 . . - . . 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 sensor, 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.

Installation, Operating & Maintenance Instructions
Series 612 DN 50 (I.D. 2”), RS485
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 290089EA
2011-06-21 16/65
2.6.4 RS485 interface connection
Refer to «Schematics» for wiring information.
2.6.5 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!
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
Series 612 DN 50 (I.D. 2”), RS485
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 290089EA
2011-06-21 17/65
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 RS485 interface to allow for remote operation. See section «RS485 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.

Installation, Operating & Maintenance Instructions
Series 612 DN 50 (I.D. 2”), RS485
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 290089EA
2011-06-21 18/65
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 Behaviour during power up
Reaction of valve:
Valve position before
power up: Valve power up configuration = closed
(defaullt) Valve power up configuration = open
Valve runs a synchronization cycle (close-open-close) to detect the limit stops.
This cycle is performed with reduced torque (2Nm). Display shows
configuration of product until synchronization cycle is done. Refer also to
chapter «Display information».
Any
Valve position after power up is closed
Valve position after power up is open

Installation, Operating & Maintenance Instructions
Series 612 DN 50 (I.D. 2”), RS485
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
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2011-06-21 19/65
3.4 Behavior in case of power failure
Reaction of valve:
Valve position before
power failure: Without Power Failure Option (PFO)
612 . . - . . G. - . . . .(No PFO, no SPS)
612 . . - . . A. - . . . .( No PFO, SPS)
Any Valve remains at current position.
All parameters are stored in a power fail save memory.
For PFO retrofit and other options refer to chapter «Retrofit».
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.
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 3s)
•Controller configuration
(2nd information for about 3s)
In case D999 is displayed, motor
interlock is active. Refer to
«Safety mode» for details.
8
= RS485interface
9
= RS485interface
with analog outputs
0
= basic
1
= with SPS1)
2
= with PFO2)
3
= with SPS1) and PFO2)
1
= 1 sensor version
2
= 2 sensor version
SYNC indicates that powerup
synchronization is running. S Y N C
1) SPS = optional ±15 VDC Sensor Power Supply module 2) PFO = Power Failure Option
Display
1 2 3 4

Installation, Operating & Maintenance Instructions
Series 612 DN 50 (I.D. 2”), RS485
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel [phone] Fax [phone] [email protected]om www.vatvalve.com 290089EA
2011-06-21 20/65
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
Closed / open interlock
(Valve closed / open
by digital input) I
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) (valve requires
cleaning) S R
1) If SR is blinking alternatively with the actual mode display (e.g. P.11 ⇔..SR) the valve requires cleaning.
Note: RxD / TxD activity of RS232 communication is displayed by 2 blinking dots in digit 2. The lower dot indicates RxD
activity where the upper dot indicates TxD activity. The indication is not real time.
Fatal error:
Description Digit 1 Digit 2 Digit 3 Digit 4
Fatal error occurred E Error code. Refer to «Trouble shooting» for details