To Next PageTo Next PageWhat to do if no dots are lighted on the display of my VAT 612 Control Unit?
Connect the valve to the power supply according to the «Electrical connection» instructions and ensure that the power supply is working correctly.
What does it mean if the Module Status LED is flashing green on my VAT 612?
If the Module Status LED is flashing green, the controller needs commissioning because of a missing, incomplete, or incorrect configuration.
What to do if the Module Status LED is off on my VAT 612 Control Unit?
Connect the valve to DeviceNet® according to the «DeviceNet® connection» instructions and ensure that power is provided.
What to do if the Network Status LED is off (Device is not on line) on my VAT Control Unit?
Connect the valve to DeviceNet® according to the «DeviceNet® connection» instructions and ensure that power is provided.
Why is the VAT 612 remote operation not working?
The remote operation might not be working because local operation via the service port is active, indicated by a 'D' on the display. To fix this, switch to remote operation. Also, ensure the motor is receiving power. Check the «Electrical connection» for more details.
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).
What to do if the VAT 612 display shows 'D 0' Motor Interlock is open?
If the display shows 'D 0', it means the motor interlock is open. Ensure that power is supplied to the motor. For details, refer to «Electrical connection».
How to improve VAT 612 Control Unit PRESSURE CONTROL if it's not optimal?
To optimize pressure control, perform the «Setup procedure» completely. Ensure that you perform LEARN. Also, make sure ZERO was performed before LEARN; if not, perform ZERO and then repeat LEARN. If LEARN was interrupted, repeat it. Ensure stable gas flow during LEARN. Tune the valve for your specific application. Check that the sensor range is suitable for the application and address any noise on the sensor signal by using a sensor with a suitable range.
What does 'SR' on the VAT Control Unit display mean and how to resolve it?
The 'SR' display indicates a service request. This can be due to a heavily contaminated valve unit. Clean the valve unit according to the «Maintenance procedures». Alternatively, reset the control unit by cycling the power (OFF-ON) or sending a reset command via the service port with CV/CPA/Service Box2.
What does error code 'E 21' mean on a VAT 612 Control Unit and how do I fix it?
Error 'E 21' indicates that the rotation angle of the valve plate is limited during power up. This could be because the valve plate is not centric adjusted, so adjust the valve plate according to «Maintenance procedure». The valve unit might be heavily contaminated, so clean it according to « Maintenance procedure ». There might be a mechanical obstruction of the valve plate, so resolve the obstruction. You can also reset the control unit by cycling the power (OFF-ON) or sending a reset command via the service port with CV/CPA/Service Box2.
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.
