Page 1
Installation, Operating & Maintenance Instructions Control gate valve with Logic interface Series 642 DN 200 mm (I.D. 8") This manual is valid for the following product ordering numbers: 64246-UECC-0001 Configured with firmware: 600P.1G.00.00…06…08 Sample picture 603773EE Edition 2014-11-24...
Page 2
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.
Series 642 Contents Description of product ................ 5 Identification of product ....................5 Use of product ......................... 5 Used abbreviations ......................5 Related documents......................5 Important information....................... 5 Technical data ......................... 6 1.6.1 Control and actuating unit ................. 6 1.6.2 Valve unit ......................
Page 4
Series 642 Position control ......................42 Pressure control ......................42 Display information ......................43 5.6.1 Power up ......................43 5.6.2 Operation ......................44 5.6.3 Errors ......................44 5.6.4 Safety mode ....................44 5.6.5 Service indication .................... 44 Operation during power up .................... 45 Behavior in case of power failure ...................
This product is a control gate valve with isolation functionality. It is intended to use for downstream pressure control applications. Use product for clean and dry vacuum applications only. Other applications are only allowed with the written permission of VAT. Used abbreviations Abbreviation...
DESCRIPTION OF PRODUCT Series 642 Technical data 1.6.1 Control and actuating unit Describtion Input voltage +24 VDC (±10%) @ 0.5 V pk-pk max. [connector: POWER] Power consumption 96 W [connector: POWER] Sensor power supply output +24 VDC / 1500 mA max. [connector: SENSOR] Sensor input Signal input voltage / Input resistance...
Series 642 DESCRIPTION OF PRODUCT 1.6.2 Valve unit Valve unit 1 × 10E-8 mbar to 2 bar (abs) Pressure range at 20°C 1 × 10E-9 mbar l/s Leak rate to outside at 20°C 1 × 10E-9 mbar l/s Leak rate valve seat at 20°C Cycles until first service - Throttling cycles (open - max.
SAFETY Series 642 Safety Compulsory reading material Read this chapter prior to performing any work with or on the product. It contains important information that is significant for your own personal safety. This chapter must have been read and understood by all persons who perform any kind of work with or on the product during any stage of its serviceable life.
Series 642 SAFETY Personnel qualifications WARNING Unqualified personnel Inappropriate handling may cause serious injury or property damage. Only qualified personnel are allowed to carry out the described work. Safety labels Label Part No. Location on valve On protective foil covering of T-9001-156 valve opening 603773EE...
Actuation is performed with a stepper motor and controller. The stepper motor/controller version ensures accurate pressure control due to exact gate positioning. For leak tight closing the VATLOCK principle is applied. For details refer to VAT catalog. 10/71 Edition 2014-11-24...
Series 642 DESIGN AND FUNCTION 3.2.1 Pressure control system overview and function Vacuum pressures are always absolute pressures unless explicitly specified as pressure differences. Valve Process chamber Gas inlet Pressure sensor(s) Sensor cable Controller and actuator Seff Cable to remote control unit Cable to power supply HV Pump Q / p...
DESIGN AND FUNCTION Series 642 3.2.1.1 Way of operation The controller compares the actual pressure in the process chamber given by the pressure sensor with the preset pressure. The controller uses the difference between actual and set pressure to calculate the correct position of the control valve. The controller drives the control valve into the correct position and the actual pressure again equals the set pressure.
Make sure that the supplied products are in accordance with your order. • Inspect the quality of the supplied products visually. If it does not meet your requirements, please contact VAT immediately. • Store the original packaging material. It may be useful if products must be returned to VAT.
INSTALLATION Series 642 Installation into the system WARNING Valve opening Risk of serious injury. Human body parts must be kept out of the valve opening and away from moving parts. Do not connect the controller to power before the valve is installed complete into the system.
Series 642 INSTALLATION 4.2.1 Installation space condition Install the valve with integrated controller with space for dismantling and air circulation as shown in figure below. sample picture 603773EE Edition 2014-11-24 15/71...
Refer also to «Safety mode». 8. This valve may optionally be equipped with a heating device. Connect VAT heating device according to manual of respective heating device.
» lbf. 2940 For a combination of both forces (F and M) the values are invalid. Verify that the depth of the mounting screws is min. 1 × thread diameter. Please contact VAT for more information. 18/71 Edition 2014-11-24 603773EE...
Series 642 INSTALLATION 4.4.1 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: •...
INSTALLATION Series 642 4.5.1 Ground connection Recommendation for ground strap between controller ground 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 Chassis (PE) (Protective Earth)
Series 642 INSTALLATION 4.5.2 Sensor supply concepts Concepts: • 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»...
You can use our Software (freeware) 'Control Performance Analyzer' which can be downloaded from: http://www.vatvalve.com/customer-service/informations-and-downloads/control-performance-analyzer. Alternatively the VAT Service Box2 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.
INSTALLATION Series 642 4.5.5 Logic Interface Functions and Wiring Logic interface allows for remote operation by means of digital and analog signals. Digital inputs may be operated either by switches or by voltage sources. a) Configuration with switches for digital inputs: Do not connect other pins than indicated in the schematics above! Use only screws with 4-40UNC thread for fastening the DB-25 connector! 24/71...
Page 25
Series 642 INSTALLATION b) Configuration with voltage source for digital inputs: Do not connect other pins than indicated in the schematics above! Use only screws with 4-40UNC thread for fastening the DB-25 connector! 603773EE Edition 2014-11-24 25/71...
INSTALLATION Series 642 4.5.6 Digital inputs Function Signal type Description Priority This pin selects the control mode. This valve may either be operated as pressure controller or as position controller. PRESSURE CONTROL is activated as long as optocoupler is ‘on’. Digital The PID controller controls the chamber pressure according to CONTROL MODE...
Page 27
Series 642 INSTALLATION Function Signal Description Priority type This function compensates the pressure gauge offset voltage and sets the pressure value to zero. In case of a 2 sensor system both sensor inputs will be adjusted. This function is initiated by the ‘off’ to ‘on’ transition of the optocoupler.
INSTALLATION Series 642 4.5.7 Digital outputs Function Signal type Description This output is active in all operation modes and indicates either that the valve is open or that a service is requested. A service request is indicated when the valve requires cleaning due to VALVE OPEN Digital contamination.
Series 642 INSTALLATION 4.5.8 Analog inputs and outputs Function Signal Description type The meaning of the setpoint input depends on the operation mode. LEARN: A voltage of 0-10V shall be applied to this input as pressure limit for learn. The limit pressure is in linear relation to the applied voltage. 10V relates to sensor full scale.
INSTALLATION Series 642 Initial operation To enable the valve for pressure control setup steps 1 to 6 must be performed. In case position control is required only it’s sufficient to perform steps 1 to 3. Setup steps Description Turn on external + 24VDC power supply of valve (and external ±15 Power up VDC for sensor power supply if required).
Series 642 INSTALLATION 4.6.2 Valve configuration Basic valve configuration must be adapted according to application needs. Definition of valve plate position in case of: • After power up, default is ‘close‘. • Power failure, default is ‘close‘. Only for versions that have Power Fail Option equipped [642 . . - . . C .
INSTALLATION Series 642 • 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. • Do not perform ZERO, if the base pressure of your vacuum system is higher than 1‰...
Page 33
Series 642 INSTALLATION Gasflow calculation for LEARN: Do not apply a different gasflow for learn than determined below. Otherwise pressure control performance may be insufficient. Required pressure / flow regime must be known to calculate the most suitable learn gas flow for a specific application. 1.
Pressure / flow / gas conditions to be controlled • Chamber volume • Pumping speed (l/s) and pump type (e.g. turbo pump) • System description • Problem description Send diagnostic file with and all required information to tuning-support@vat.ch 34/71 Edition 2014-11-24 603773EE...
Page 35
Series 642 INSTALLATION 4.6.6.1 Gain factor adjustment The gain factor effects: Stability, Response time Default value is 1. Adjustment range is from 0.0001 to 7.5. Higher gain results in: faster response higher over- / undershoot of pressure Lower gain results in: slower response lower over- / undershoot of pressure Adjustment procedure:...
Page 36
INSTALLATION Series 642 4.6.6.2 Sensor delay adjustment Sensor delay adjustment effects: Stability Default value is 0sensorDeay0. Adjustment range is from 0 to 1.0s. Pipes and orifices for sensor attachment delay response time and so badly impact pressure control stability. By adapting this parameter to the approximate delay time stability problems can be reduced. But control response time will be slowed down by this measure.
Page 37
Series 642 INSTALLATION 4.6.6.3 Setpoint ramp adjustment Setpoint ramp effects: Undershoot of pressure, Response time Default value for Setpoint Ramp is 0. Adjustment range for Setpoint Ramp is from 0 to 10 s. This parameter defines the time that is used to decrease / raise pressure between 2 setpoints. Especially in pressure decrease situations at low flows pressure response can be improved much by adapting setpoint ramp time.
Page 38
INSTALLATION Series 642 4.6.6.4 Valve speed adjustment Valve speed effects: Response time Default value is 1000. Adjustment range is from 1 to 1000. This parameter effects valve plate actuating speed. Speed adjustment is effective for PRESSURE CONTROL and POSITION CONTROL. Normally best pressure control response is achieved with max.
Series 642 OPERATION Operation WARNING Unqualified personnel Inappropriate handling may cause serious injury or property damage. Only qualified personnel are allowed to carry out the described work. WARNING Valve opening Risk of serious injury. Human body parts must be kept out of the valve opening and away from moving parts. Do not connect the controller to power before the valve is installed complete into the system.
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 is required. You can use our Software (freeware) 'Control Performance Analyzer' which can be downloaded from: http://www.vatvalve.com/customer-service/informations-and-downloads/control-performance-analyzer.
Series 642 OPERATION 5.1.2 Remote operation This product is equipped with a Logic interface to allow for remote operation. See section «Logic interface» for details. 'Control Performance Analyzer' software or 'Service Box 2' may be used for monitoring during remote control. 'Control Performance Analyzer' software 'Service Box 2' In case ‘Control Performance Analyzer’...
OPERATION Series 642 Close valve Local operation: Remote operation: (‘Control View’, ‘Control Performance Analyzer’ or (Refer to chapter «Digital inputs» for details) ‘Service Box 2‘) Push CLOSE button Send CLOSE VALVE Open valve Local operation: Remote operation: (‘Control View’, ‘Control Performance Analyzer’ or (Refer to chapter «Digital inputs»...
Series 642 OPERATION Display information There is a 4 digit display located on the panel. It displays configuration, status and position information. For details see following tables. 1 2 3 4 Display 5.6.1 Power up Description Digit 1 Digit 2 Digit 3 Digit 4 At first all dots are illuminated then...
642 . . - . .U . - ../ 642 . . - . .W . - ..Valve will close or open depending on valve configuration. Default is close. Provide that battery pack of the VAT controller is charged. Display indicates F. All parameters are stored in a power fail save memory.
OPERATION Series 642 Operation under increased temperature CAUTION 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.
TROUBLE SHOOTING Series 642 Trouble shooting Failure Check Action No dots lighted on display - 24 V power supply ok? - Connect valve to power supply according to «Electrical connection» and make sure that power supply is working. Remote operation does not work - Local operation via service - Switch to remote operation.
Page 48
TROUBLE SHOOTING Series 642 Failure Check Action Pressure reading is wrong - Sensor(s) connected? - Refer to «Electrical connection». - 2 sensor version present at - Check valve version on page 1. Verify configuration. pressure reading is negative valve controller? Refer to «Setup procedure».
Before carrying out any maintenance, please contact VAT. It has to be individually decided whether the maintenance can be performed by the customer or has to be carried out by VAT. Please write down the fabrication number of the valve before contact VAT. Refer to chapter «Identification of product»...
Replacement of gate seal (gate and bonnet seal) and valve cleaning Required frequency of cleaning and replacement of seals is depending on process conditions. VAT can give the following recommendations for preventive maintenance: Replacement of Recommendation Gate seal (gate and bonnet seal) Every 100’000 cycles...
Page 51
Series 642 MAINTENANCE Description Required tool Unfasten and remove the bonnet 2 × Open end wrench screws 13 mm § Remove valve bonnet and vulcanized bonnet seal Deposit both parts on a clean place Pull out the gate until the crank bolt can be reached 10.
Page 52
MAINTENANCE Series 642 Description Required tool 12. Pull out the gate assembly complete Caution! Take care that gate is not scratching at lever while pulling out 13. Place the gate on a clean place O-ring removal tool 14. Remove the gate o-ring Clean room wiper a 15.
Page 53
Series 642 MAINTENANCE Description Required tool Cleaning tool a little soaked with isopropyl alcohol 17. Clean the valve body inside (refer to chapter «Spare parts» for cleaning tool) Clean room wiper a 18. Clean the sealing surface of valve little soaked with isopropyl alcohol 19.
Page 54
MAINTENANCE Series 642 Description Required tool 22. Push in the gate assembly into valve body Clean room wiper a 23. Clean the valve bonnet little soaked with isopropyl alcohol 24. Clean the bonnet seal 25. Lubricate the seal side with 0.1 ml vacuum grease Clean room wiper If necessary use a new bonnet...
Series 642 MAINTENANCE 7.2.2 Replacement of Option board NOTICE Electrostatic discharge Electronic components could be damage. All work on the control and actuating unit has to be done under ESD protected environment to prevent electronic components from damage. NOTICE Burned connector pins (spark) Connector pins or electronic parts could damage, if plugged and unplugged under power.
Page 56
MAINTENANCE Series 642 7.2.2.1 Durability of power fail battery The curves in the graph show the estimated life of Ultra Cap PFO in the worst condition (max. sensor load = 1 A, valve heating temperature = 150 °C). If the SPS is not fully loaded (< 1 A) or heating temperature of valve body is lower than 150 °C, the corresponding life time curve will be somewhere in between the upper and the lower curve.
Series 642 MAINTENANCE 7.2.3 Retrofit / replacement procedure Top view on control and actuating unit with panel removed: Master board Connector board Option board Interface board Motor driver board All boards have a fixed position into control and actuating unit. It is not possible to fit a board in other position as shown in picture above! 7.2.3.1 Needed tools...
Page 58
MAINTENANCE Series 642 Description Required tool Attention to ESD protection! Disconnect all electrical connections Pozidriv screw driver size1 at controller. Open end wrench 7 mm Remove the panel screws. Pozidriv screw driver size1 Remove this screws and the cover. Screw driver size 2 Remove female screw locks from Open end wrench 4.5 mm connectors.
Page 59
Series 642 MAINTENANCE Description Required tool Remove or replace option board. (sample picture) Reassemble all parts in reverse order (see steps 6…3). Tighten panel screws with 1.1 Nm (see step 3). Pozidriv screw driver size1 Connect all electrical connections. Open end wrench 7 mm If you need any further information, please contact one of our service centers.
Series 642 Repairs Repairs may only be carried out by the VAT service staff. In exceptional cases, the customer is allowed to carry out the repairs, but only with the prior consent of VAT. Please contact one of our service centers. You will find the addresses on our website www.vatvalve.com.
Series 642 DISMOUNTING AND STORAGE Dismounting and Storage WARNING Unqualified personnel Inappropriate handling may cause serious injury or property damage. Only qualified personnel are allowed to carry out the described work. Dismounting NOTICE Contamination Gate and other parts of the valve must be protected from contamination. Always wear clean room gloves when handling the valve.
DISMOUNTING AND STORAGE Series 642 Storage NOTICE Wrong storage Inappropriate temperatures and humidity may cause damage to the product. Valve must be stored at: – relative humidity between 10% and 70% – temperature between +10 °C and +50 °C – non-condensing environment NOTICE Inappropriate packaging Product may get damaged if inappropriate packaging material is used.
If products are radioactively contaminated, the VAT form «Contamination and Radiation Report» must be filled out. Please contact VAT in advance. • If products are sent to VAT in contaminated condition, VAT will carry out the decontaminating procedure at the customer's expense. 10.1...
10.2 Transport NOTICE Inappropriate packaging Product may get damaged if inappropriate packaging material is used. Always use the original packaging material and handle product with care. VAT disclaims any liability for damages resulting from inappropriate packaging. 64/71 Edition 2014-11-24 603773EE...
Series 642 DISPOSAL Disposal WARNING Unqualified personnel Inappropriate handling may cause serious injury or property damage. Only qualified personnel are allowed to carry out the described work. 603773EE Edition 2014-11-24 65/71...
«Identification of product». This is to ensure that the appropriate spare parts are supplied. • VAT makes a difference between spare parts that may be replaced by the customer and those that need to be replaced by the VAT service staff. •...
Need help?
Do you have a question about the 64246-UECC-0001 and is the answer not in the manual?
Questions and answers