To Next PageTo Next PageWhat to do if VAT Control Unit CLOSE VALVE does not work?
If the VAT valve does not CLOSE, it may be due to safety mode or maintenance mode being active. If safety mode is active, indicated by a 'D' on the display, provide power to the motor. If maintenance mode is active, refer to “Display shows «M C»”.
Why ZERO does not work on my VAT 651 Control Unit?
If the VAT Control Unit's ZERO function does not work, check if the valve is in the open position (indicated by an 'O' on the display). If it is, open the valve and bring the chamber to base pressure before performing ZERO. Also, verify that ZERO is enabled in the settings.
Why remote operation does not work on VAT Control Unit?
If the VAT Control Unit's remote operation is not working, it might be because local operation via the service port is active; switch to remote operation. Alternatively, safety mode might be active, indicated by a 'D' on the display. In this case, provide power to the motor.
Why PRESSURE CONTROL does not work on my VAT 651?
If the VAT Control Unit's PRESSURE CONTROL does not work, first ensure that the safety mode is not active by checking for a 'D' on the display, and provide power to the motor if needed. Also, confirm that PRESSURE CONTROL mode is selected, indicated by a 'P' on the display. Finally, make sure that LEARN has been performed.
Why is the VAT 651 PRESSURE CONTROL not optimal?
If the VAT Control Unit's PRESSURE CONTROL is not optimal, ensure that the setup procedure has been completed fully. Perform LEARN, making sure ZERO was performed before LEARN, and repeat LEARN if it was interrupted or the gas flow was unstable during the process. Tune the valve for the specific application and verify that the sensor range is suitable. Also, ensure a shielded sensor cable is used to minimize noise on the sensor signal.
How to fix «E 20» error on VAT 651 Control Unit?
If the VAT Control Unit display shows «E 20», it indicates a fatal error where the limit stop of the valve unit was not detected. To solve this, reset the control unit by cycling the power (OFF-ON) or sending a reset command locally via the service port with CV/CPA/Service Box2. If the reset is unsuccessful, replace the actuator.
What to do if VAT 651 displays «E 22» error?
If the VAT Control Unit display shows «E 22», it signifies that the rotation angle of the valve plate is limited during operation. Check for any mechanical obstructions of the valve plate and resolve them. Then, reset the control unit by cycling the power (OFF-ON) or sending a reset command locally via the service port with CV/CPA/Service Box2.
General| Brand | VAT |
|---|---|
| Model | 651 Series |
| Category | Control Unit |
| Language | English |
Details on how to identify the valve, including fabrication and order numbers.
Explains the intended applications and limitations for this throttling pendulum valve.
Lists common abbreviations like CPA, PFO, SPS, ADC found in the manual.
Lists other documents relevant to the product, such as data sheets and drawings.
Highlights important statements requiring particular attention, often referring to other sections.
Specifies electrical and power input requirements for the control unit.
Details technical specifications for the valve unit, including pressure range and materials.
Emphasizes the importance of reading and understanding safety information before operation.
Defines different risk levels (Danger, Warning, Caution, Notice) and associated hazards.
Specifies the required qualifications for personnel working with the valve.
Identifies safety labels and their locations on the valve.
Illustrates the physical components and assembly of the valve unit.
Explains how the valve operates as a throttling element and for isolation.
Provides a schematic and functional overview of the pressure control system.
Details the operational principle of the pressure control system, including PID control.
Instructions for safely unpacking the valve and checking its contents.
Guidelines and warnings for installing the valve into the vacuum system.
Specifies the necessary clearance around the valve for installation and maintenance.
Shows the system schematic and controller connection points for wiring.
Step-by-step instructions for physically installing the valve into the vacuum system.
Provides torque values for mounting screws based on valve size and flange type.
Specific torque values and procedures for mounting with centering rings.
Specific torque values and procedures for mounting with O-rings.
Defines the maximum axial and bending forces the valve body can withstand.
Specifies requirements for connecting pressure sensors for optimal performance.
General warnings and guidelines for electrical connections to the valve.
Recommendations for proper grounding of the valve controller to the system chassis.
Outlines the three alternative concepts for supplying power to the sensor(s).
Details wiring for connecting +24 VDC sensors via the controller or externally.
Wiring instructions for ±15 VDC sensors without the optional SPS module.
Wiring instructions for ±15 VDC sensors with the optional SPS module.
How to connect the valve to a computer via the RS232 service port.
Explains logic interface functions and wiring for remote operation using digital signals.
Details the functions and pin assignments for digital inputs on the valve.
Describes the functions and pin assignments for the valve's digital outputs.
Explains the analog inputs for setpoints and analog outputs for status readings.
Outlines the necessary setup steps to enable the valve for pressure control.
Lists the sequence of steps required for initial valve setup and configuration.
How to configure the logic interface for remote operation based on application needs.
How to adapt basic valve configuration to specific application requirements.
How to adapt basic sensor configuration to specific application needs.
How to compensate for sensor offset voltage and set pressure to zero.
How to adapt the PID controller to the vacuum system characteristics.
Describes different pressure control configurations (Downstream, Upstream, Soft Pump).
How to configure the pressure controller type (adaptive, fixed, soft pump).
Details the parameters for different pressure control algorithms.
Explains the adaptive, fixed 1, fixed 2, and soft pump control algorithms.
Guidance on adjusting control parameters to optimize valve performance.
Step-by-step guide to tune adaptive pressure control performance.
How to adjust the gain factor to affect stability and response time.
How to adjust sensor delay to improve stability.
How to adjust setpoint ramp time to improve pressure response.
How to adjust valve speed for optimal pressure control response.
How to optimize P gain and I gain for fixed PI pressure control.
How to optimize P gain for pressure control ramps during pump down.
General description of the valve's operation in pressure or position control modes.
How to operate the valve using a computer or Service Box 2.
How to operate the valve remotely using its logic interface.
Procedures for closing the valve locally or remotely.
Procedures for opening the valve locally or remotely.
How the valve position is controlled based on the setpoint.
How to prepare and perform pressure control operations.
How the valve operates with two pressure sensors for extended range.
Explains the information displayed on the valve's panel during operation.
Describes the initial display information shown when the valve powers up.
Details the display codes for different operational modes and statuses.
Lists and explains error codes displayed on the valve panel.
How the valve enters and behaves in safety mode, e.g., during maintenance.
How the valve indicates when cleaning or an obstruction is present.
Describes the valve's behavior and display during power up.
Explains how the valve behaves during power loss, with and without PFO.
Warnings and guidelines for operating the valve at elevated temperatures.
Describes the valve's reaction to a drop in compressed air pressure.
Information on recommended maintenance intervals and factors affecting them.
Outlines preventive maintenance tasks, including seal replacement and cleaning.
Detailed steps for replacing isolation seals and cleaning the valve.
Detailed steps for replacing actuator shaft seals.
Instructions for replacing or retrofitting option boards like SPS and PFO.
General procedure for retrofitting or replacing electronic boards within the unit.
Steps and precautions for safely dismounting the valve from the system.
Recommendations for proper storage conditions to prevent product damage.
Guidelines for packaging the valve for return or transport.
General advice on handling and transporting the product to prevent damage.
Diagram showing the components of the valve unit with numbered parts.
Lists part numbers for seals, O-rings, and grease for the valve unit.
Lists part numbers for control units, option boards, and related kits.
Lists part numbers for accessories like power supplies, cables, and software.
