To Next PageTo Next PageWhat to do if the VAT Control Unit controller doesn't respond or responds unexpectedly to DeviceNet® commands?
If your VAT Control Unit controller is not responding or behaving unexpectedly to DeviceNet® commands, the configuration might be incorrect. To resolve this, send a FACTORY RESET command and redo the complete configuration.
What to do if the VAT 650 Control Unit display shows «D C» or «D999» and the Motor Interlock is open?
If the VAT Control Unit displays «D C» or «D999», indicating the Motor Interlock is open, ensure that power is supplied to the motor. Refer to the «Electrical connection» section for detailed instructions.
What to do if ZERO does not work on VAT 650?
If the ZERO function is not working on your VAT Control Unit, it might be due to the valve being in the open position or ZERO being disabled. To fix this, open the valve, bring the chamber to base pressure, and then enable ZERO.
How to fix a COMPRESSED AIR FAILURE «AIRf» on VAT Control Unit?
A 'COMPRESSED AIR FAILURE AIRf' error on your VAT Control Unit indicates insufficient air pressure at the valve's air input. To resolve this, connect an air supply or increase the air pressure, ensuring it exceeds 4 bar (55 psi).
What to do if pressure is not '0' after ZERO on my VAT 650 Control Unit, and PRESSURE CONTROL isn't working?
If the pressure reading isn't '0' after performing ZERO and pressure control isn't functioning correctly on your VAT Control Unit, consider these potential causes: * Sensor voltage shifting. * System not pumped to base pressure. * Sensor offset voltage exceeding ±1.4V. * Safety mode active. * PRESSURE CONTROL not selected. * LEARN not completed. To address this, wait for the sensor to stabilize before performing ZERO, ensure the system is at base pressure by opening the valve, replace the pressure gauge if necessary, verify that power is supplied to the motor, and select PRESSURE CONTROL mode. Finally, perform LEARN.
Why is the VAT 650 pressure control not optimal?
Suboptimal pressure control in your VAT Control Unit can stem from several factors: * Incomplete setup. * Improper execution of LEARN. * Not performing ZERO before LEARN. * Interruptions during LEARN. * Unstable gas flow during LEARN. * Improper tuning. * Using an unsuitable sensor range. * Noise on the sensor signal. To resolve this, perform the setup procedure completely, ensure ZERO is performed before repeating LEARN with stable gas flow, tune the valve for your application, use a shielded sensor cable, and verify that the sensor range is appropriate (controlled pressure should be >3% and < 98% of sensor full scale).
How to fix no dots lighted on VAT Control Unit display?
Connect the valve to the power supply according to «Electrical connection» and ensure that the power supply is working.
What does «E 40» mean on VAT 650 Control Unit?
If the display shows «E 40» (fatal error - motor driver failure detected), replace the control and actuating unit according to « Maintenance procedure ».
What does «E 20» mean on VAT Control Unit and how can I fix it?
If the display shows «E 20» (fatal error - limit stop of valve unit not detected), it might be caused by the valve plate not being properly mounted. Replace the control and actuating unit according to « Maintenance procedure ».
What does «E 22» mean on VAT Control Unit and how to fix it?
If the display shows «E 22» (fatal error - rotation angle of valve plate limited during operation), it could be due to a heavily contaminated valve unit or a mechanically obstructed valve plate. You should: * Clean the valve unit according to « Maintenance procedure ». * Resolve any obstruction.
General| Supply voltage | 24 VDC |
|---|---|
| Digital inputs | 8 |
| Digital outputs | 8 |
| Analog inputs | 4 |
| Analog outputs | 2 |
| Mounting | DIN rail |
| Output Voltage | 24 VDC |
| Current Rating | 2 A |
| Weight | 0.5 kg |
| Communication interface | RS-485 |
| Protocols | Modbus RTU |
| Protection | Short-circuit, overload |
Provides detailed specifications for the control and actuating unit.
Covers unpacking, system installation, and connector panel overview.
Details tightening torque, admissible forces, and mounting requirements.
Covers sensor connection requirements and electrical wiring details.
Covers CC-Link cable installation, connectors, network, and valve cluster connection.
Overview of valve cluster, operational modes, and basic behaviors.
Describes valve behavior during power up/failure and display information.
Essential steps for configuring the valve cluster for operation.
Configures unique cluster addresses and CC-Link parameters.
Adapting valve configuration and setting up ZERO/LEARN.
Managing position control, pressure control, and performance tuning.
Detailed adjustments for gain factor, sensor delay, setpoint ramp, and valve speed.
Details on CC-Link schematics, handshaking, buffers, and communication timing.
Overview and details of OUTPUT and INPUT buffers for PLC communication.
Identifies common failures, troubleshooting steps, and CC-Link warnings.
Recommended maintenance schedules for seals and valve cleaning.
Information on option boards, battery life, and replacement procedures.
A labelled diagram showing the main components of the valve.
Lists spare parts for control and valve units, including seals and boards.
Details available accessories like power supplies, software, and centering rings.
Outlines the warranty terms and conditions for VAT products.
