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| Electronics |
| Components for Control Systems |
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| Building a complete control solution for an intelligent electrohydraulic system may require various signal conditioners, relays, and other electronic devices. Rexroth provides many of these items to simplify the total system integration, as well as hydraulics applications assistance, to help you design and build your system to match your unique manufacturing requirements.
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Command Valves and Controllers
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Data Sheet (PDF)
RE 30 146
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Model VT-HACD-DPQ Digital Injection Axis Control for Hydraulic Molding Machines
Series 2X
A digital controller card that provides a complete hydraulic injection axis control solution; uses injection velocity profiles that are controlled completely by use of closed loop position control. An advanced position command profile is calculated automatically based on the velocity profile input by the operator.
Common applications include plastics injection molding, transfer molding, extrusion, broaching, rubber molding, and accumulator head blow molding.
Key features:
- Actual value acquisition possible by means of SSI encoder, incremental or analogue position measuring system
- Free configuration for valve spool
- Loop tuning with ramps
- Jog mode
- Separate menus for Injection, “Pack and Hold“ and Back Pressure
- Pressure transfer by position, cavity pressure, hydraulic pressure activated by position, or discrete input
- ±10 V reference voltage output
- Front display with keys for displaying and changing parameters and diagnosis purposes
Download VT-HACD-DPQ Digital Injection Axis Controller Data Sheet
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Data Sheet (PDF)
RE 30 147
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Model VT-HACD-DPC digital hydraulic Clamp Unit Control Card
Series 2X
Digital control card for clamp control type applications.
Key features:
- Proven control techniques and advanced options for controlling the hydraulic axis.
- Optimizes control of hydraulic axis for velocity and pressure force-/pressure control, for open loop and closed loop motion sequences.
- Constant acceleration-type ramping for smooth acceleration of the clamp.
- Force/pressure-limiting control that can be configured to work with a 2-pressure transducer or a load cell.
- Advanced control techniques like Active Damping, for precise closed loop control of the most demanding low-natural frequency systems.
Download the VT-HACD-DPD Digital Hydraulic Clamp Unit Controller Data Sheet
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Data Sheet (PDF)
RE 30 058
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Model VT-VARAP1 p/Q Amplifier
Series 2X
Specialized hydraulic servo valve amplifier designed for actuating directly operated and pilot operated servo solenoid valves.
Key features:
- Output stage with closed-loop control
- Rapid energizing and de-energizing for fast response times
- Enabling input
- Short-circuit-proof outputs
- External control shutoff
- Open-circuit detection for feedback signal cable and pressure sensor
- Suitable for pressure sensors
- Closed-loop position control with PID action
Download the VT-VARAP1 p/Q Servo Amplifier Data Sheet
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Data Sheet (PDF)
RE 30 134
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Model VT-VACAP p/Q Controller
Series 2X
Designed to control p/Q-type closed loop hydraulic motion sequences, suitable for servo solenoid valves with on-board electronics.
Key features:
- Closed-loop position control with PID action
- Short-circuit-proof outputs
- External deactivation for pressure controller
- Suitable for pressure sensors (1...6 V, 0...10 V, 4...20 mA)
- Supply for pressure sensors
- Detection of open circuit to pressure sensors
Download the VT-VACAP p/Q Controller Data Sheet
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Data Sheet (PDF)
RA 30 050
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Model VT-MACAS Analog Position Controller
Series 1X
Analog position controller supports simple position or velocity control loops for hydraulic motion systems, in combination with Bosch Rexroth servo cylinders and analog position measurement systems (potentiometers).
Signals are processed in an analog manner and module is equipped with only those features required for performing a control action, providing a low-cost option for simple hydraulic motion.
Key features:
- DIN-rail mountable
- Open-circuit detection for feedback signal cable
- Short-circuit-proof interfaces
- Measurement taps on front panel
- Deadband compensation can be deactivated
- Position: PT1 control
- Velocity control possible in conjunction with a speedometer: PI control
- Cylinder area ratio adjustment
Download the VT-MACAS Analog Position Controller Data Sheet
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Data Sheet (PDF)
RA 29 902
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Model VT-SWMA-1 Analog Command Value Module
Series 1X
Suitable for controlling valves with integral electronics
- Supports realizing simple hydraulic functions via digital controlling
- Adjustment elements:
- 1 potentiometer for zero point adjustment (command value offset)
- 1 potentiometer for command value attenuation (for differential input)
- 4 potentiometers for command value preselection
- 5 potentiometers for ramp time adjustment
- Measuring sockets for command value and ramp time
- Differential input
- 4 call-up possibilities each for command value and ramp time
- Ramp generator with 5 ramp times; 4-quadrant recognition
- Control signal output
- Power supply unit without raised zero point
Download VT-SWMA-1 Analog command value module Data Sheet
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For more information or to order brochures and catalogs, contact your nearest distributor.
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