To Next PageTo Next PageWhat to do if VAT Control Unit display shows «SR»?
If your VAT Control Unit displays 'SR' (Service Request), it indicates that the valve unit may be heavily contaminated or the gate seal is sticking. Clean the valve unit according to maintenance procedures. Then, reset the control unit either by cycling the power off and on, or by sending a reset command locally via the service port with CV/CPA/Service Box2.
What to do if VAT 612 display shows «D 0»?
If the VAT Control Unit displays «D 0», which indicates the Motor Interlock is open, ensure that power is supplied to the motor.
Why is PRESSURE CONTROL not optimal on VAT 612?
To optimize PRESSURE CONTROL on your VAT Control Unit, perform the setup procedure completely, perform LEARN, and ensure ZERO was performed before LEARN. Repeat LEARN if it was interrupted or if the gas flow was unstable. Tune the valve for your application and verify the sensor range is suitable. Also, ensure a shielded sensor cable is used. These steps address potential issues such as incomplete setup, improper LEARN execution, unstable gas flow, incorrect tuning, unsuitable sensor range, or noise on the sensor signal.
What to do if the VAT Control Unit display shows «E 40» (fatal error - motor driver failure detected)?
If the VAT Control Unit display shows «E 40», it indicates a fatal error due to a motor driver failure. Replace the control and actuating unit according to «Maintenance procedure».
Why is my VAT 612 pressure reading wrong or negative?
A wrong or negative pressure reading can occur if the sensor(s) are not properly connected. Refer to «Electrical connection». It may also happen if you are using a 2 sensor version, so check the valve version and verify the configuration. Refer to «Setup procedure». Ensure that ZERO has been performed when base pressure is reached. Refer to «ZERO» for details. Verify the sensor supply voltage to ensure it provides enough power for the sensor(s).
Why is the VAT Control Unit PRESSURE CONTROL not optimal?
PRESSURE CONTROL might not be optimal due to several reasons. Perform the setup procedure completely. Ensure that you have performed LEARN and ZERO before LEARN. If LEARN was interrupted, repeat it with stable gas flow. Tune the valve for your application. Use a sensor with a suitable range, ensuring the controlled pressure is between 3% and 98% of the sensor's full scale. Also, make sure a shielded sensor cable is used to minimize noise.
Why pressure reading is wrong on VAT 612?
To fix a pressure reading that is wrong or negative on your VAT Control Unit, check the electrical connections, verify the valve version and configuration, perform ZERO after reaching base pressure, and verify the sensor supply voltage. The issue may stem from unconnected sensors, an incorrect sensor version, an unperformed ZERO, or insufficient sensor power.
Why ZERO does not work on VAT 612?
If ZERO does not work on your VAT Control Unit, open the valve and bring the chamber to base pressure before performing ZERO. Also, ensure that ZERO is enabled.
What to do if pressure is not ‘0’ after ZERO on VAT Control Unit?
If the pressure is not ‘0’ after performing ZERO on your VAT Control Unit, wait until the sensor voltage stabilizes before performing ZERO. Ensure the valve is open and the system is pumped to base pressure before performing ZERO. If the sensor offset voltage exceeds ±1.4V, replace the pressure gauge.
How to fix «E 40» error on VAT 612?
To resolve the 'E 40' error on your VAT Control Unit, indicating a motor driver failure, replace the control and actuating unit.
General| Input Voltage | 24 VDC |
|---|---|
| Output Voltage | 24 VDC |
| Current Rating | 10 A |
| Operating Temperature | -20°C to +60°C |
| Protection Class | IP20 |
| Series | VAT 612 |
Emphasizes safety reading and defines danger levels (DANGER, WARNING, CAUTION, NOTICE).
Details the pressure control system, including components and operational modes.
Outlines the step-by-step procedure for installing the valve, including connections and grounding.
Presents critical notices regarding wrong connections and burned connector pins.
Details wiring for +24 VDC sensors via the controller, including connector information.
Details wiring for ±15 VDC sensors without an optional SPS module.
Details wiring for ±15 VDC sensors with an optional SPS module.
Explains the EtherCAT interface connection, including network and cable specifications.
Outlines the setup steps required for the valve to perform pressure control.
Explains the ZERO function for compensating sensor offset voltage to zero pressure.
Describes the LEARN routine for adapting the PID controller to vacuum system characteristics.
Guides the selection of pressure control configurations based on gas flow availability.
Explains how to set up the pressure controller using CPA software or EtherCAT.
Details tuning procedures for adaptive pressure controllers, including gain factor and sensor delay.
Explains how to adjust the gain factor to affect stability and response time.
Describes adjusting sensor delay to improve stability, noting it can slow control response.
Explains how to adjust setpoint ramp time to improve pressure response, especially during decreases.
Details adjusting valve speed for optimal pressure and position control response.
Guides tuning pressure control performance for fixed PI controllers.
Explains how to optimize P gain and I gain for PI controller mode based on system characteristics.
Details tuning pressure control performance for soft pump controllers.
Explains how to adjust the P gain for pressure ramps during pump down.
Guides on preparing for pressure control, tuning performance, and using the PID controller.
