To Next PageTo Next PageWhat to do if the VAT 612 does not respond to DeviceNet® commands?
If the VAT Control Unit doesn't respond to DeviceNet® commands, check if the node number and baud rate are correct. If not, proceed according to the «Setup procedure, DeviceNet® CONFIGURATION».
Why POSITION CONTROL does not work on VAT 612?
If the VAT Control Unit POSITION CONTROL does not work, ensure that power is supplied to the motor. Refer to «Electrical connection» for details. Select POSITION CONTROL mode, referring to «Position control» for details.
Why is pressure not ‘0’ after ZERO PRESSURE CONTROL on VAT 612 Control Unit?
If the VAT Control Unit pressure is not ‘0’ after ZERO PRESSURE CONTROL, wait until the sensor voltage stabilizes before performing ZERO. OPEN the VALVE and bring the chamber to base pressure before performing ZERO. If the sensor offset voltage exceeds ±1.4V, replace the pressure gauge. Ensure power is supplied to the motor and refer to «Electrical connection». Select PRESSURE CONTROL mode, referring to «Pressure control». Perform LEARN, referring to «Setup procedure».
How to fix remote operation on VAT 612?
To resolve a non-functioning remote operation on the VAT Control Unit, switch to remote operation and provide power to the motor. Refer to «Electrical connection» for details.
What to do if the pressure reading is wrong or negative on my VAT Control Unit?
First, check the electrical connections. Then verify the valve version and configuration. Perform ZERO after base pressure is reached. Finally, verify the sensor supply voltage. Ensure that the sensors are connected, the correct 2-sensor version is present at the valve controller (if applicable), and the sensor power supply provides enough power.
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.
What to do if my VAT 612's Network Status LED is flashing red (time out)?
If the Network Status LED is flashing red, it indicates a time-out. Reestablish I/O connections to resolve this issue.
What to do if the VAT 612 controller does not respond or responds unexpectedly to DeviceNet® commands?
If the VAT Control Unit controller isn't responding as expected to DeviceNet® commands, it might be a configuration issue. Send a FACTORY RESET and redo the complete configuration. Refer to «Explicit messaging control commands, FACTORY RESET» and «Setup procedure, DeviceNet® configuration» for details.
What to do if ZERO does not work on VAT 612 Control Unit?
If ZERO does not work, ensure the valve is in the open position and the chamber is at base pressure before performing ZERO. Also, check if ZERO is enabled. If not, enable ZERO. Refer to «Valve configuration» for details.
What to do if pressure is not ‘0’ after ZERO on my VAT 612 and PRESSURE CONTROL does not work?
If the pressure isn't ‘0’ after performing ZERO and PRESSURE CONTROL isn't working, first wait until the sensor voltage stabilizes before performing ZERO. Ensure the system is pumped to base pressure. If the sensor offset voltage exceeds ±1.4V, replace the pressure gauge. Also, ensure that the safety mode is not active and that PRESSURE CONTROL mode is selected. Finally, perform LEARN.
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.
