Description
Performance Characteristics
Power Supply Protection: It is powered through a 50mA fuse, which can effectively limit the current circulation on-site and improve safety.
Power Indication: With dual 24Vdc power feeding, the presence indication is provided by a green LED, which is convenient for users to understand the power supply status.
Control Function: It has programmable numerical control operations, supports the pressure contention of the position controller and NC language, and can achieve complex control tasks.
Communication Interface: It complies with -8, 16 or 24 digital inputs and outputs, supports PROFIBUS DP, has EC directives (CE marking), and can communicate with the PLC through CANopen or InterBus-S, making it convenient for integration with other devices.
Environmental Adaptability: It is a freely configurable controller variant, supporting subroutine technology and conditional alternate closed-loop control (position/pressure). It is suitable for harsh industrial environments and can resist the impacts of vibration and dry climate.
Application Areas: It is widely applied in industrial fields such as machine tools, plastic processing machinery, special measurement systems, and transmission lines, and can achieve precise control of related equipment. It can also be used in railway vehicles and situations with a large amount of liquid, including control scenarios such as incremental or absolute (SSI), analog 0 to ±10V and 4-20mA, and a reference voltage of 10V for presses.
Some common faults and corresponding troubleshooting guides:
Possible causes
- The external power supply is not connected or there is a power supply failure.
- The fuse inside the controller is blown.
- The power connection cable is loose, damaged, or has poor contact.
Troubleshooting methods - Check the external power supply. Use a multimeter to measure whether the power supply voltage is normal (it should be 24V DC). If the power supply is abnormal, check the power switch, power module, etc., and repair or replace the damaged components.
- Check the 50mA fuse inside the controller. If it is blown, replace it with a fuse of the same specification and investigate whether there are causes such as a short - circuit that led to the fuse blowing.
- Check the power connection cable to ensure it is firmly connected without looseness or damage. If it is damaged, replace the cable promptly.
Possible causes
- The power supply voltage is unstable and fluctuates.
- There is a fault in the internal power circuit of the controller.
Troubleshooting methods - Use a voltage monitoring device to monitor the power supply voltage. If the voltage fluctuates significantly, consider using a regulated power supply.
- If the power supply voltage is normal but the indicator is still abnormal, it may be a problem with the internal power circuit of the controller. Contact Rexroth's professional technicians for maintenance.
Possible causes
- The communication cable is incorrectly connected, loose, or damaged.
- The communication parameters are incorrectly set, such as the baud rate, station address, etc.
- The communication interface is damaged.
Troubleshooting methods - Check the connection of the communication cable to ensure it is correctly and firmly connected. You can use the replacement method. Replace the original cable with a normal one to determine if it is a cable problem.
- Check the communication parameter settings to ensure they are consistent with those of the PLC or other devices. You can refer to the device manual for parameter settings.
- If both the cable and parameter settings are normal, it may be that the communication interface is damaged. Contact a professional for repair or replacement.
Possible causes
- Electromagnetic interference affects the communication quality.
- The communication rate is too high, exceeding the communication capacity of the device.
- There is a fault in the device software.
Troubleshooting methods - Check if the communication line is close to strong electromagnetic interference sources, such as motors, transformers, etc. If so, take shielding measures or adjust the line position.
- Try reducing the communication rate and observe if the data transmission situation improves.
- Check if the device software needs to be updated. You can contact Rexroth to obtain the latest software version for update.
Possible causes
- The sensors are faulty, such as inaccurate signals from the position sensor or pressure sensor.
- The control parameters are unreasonably set.
- There is a fault in the actuator (such as a hydraulic drive or an electric drive).
Troubleshooting methods - Use professional detection equipment to check the output signals of the sensors. If the signals are abnormal, replace the faulty sensors.
- Readjust the control parameters. You can refer to the device manual and actual application requirements for setting.
- Check the working status of the actuator, such as the oil pressure of the hydraulic drive and the current of the electric drive. If there is a fault in the actuator, carry out corresponding maintenance or replacement.
Possible causes
- There is an error in the controller program.
- External interference causes the controller to malfunction.
Troubleshooting methods - Check and debug the controller program. You can use programming software to check if the program logic is correct. If there is an error, modify the program.
- Check if there are strong interference sources around the device, such as radio frequency interference, electrostatic interference, etc. Take measures such as shielding and grounding to reduce interference.
Main brands include: ABB, Bailey, GE, FOXBORO, Invensys TRICONEX, Bentley BENTLY, A-B Rockwell, EMERSON EMERSON, B&R, MOTOROLA, FUANC, REXROTH, KUKA, HONEYWELL, NI, DEIF, Yokogawa, WOODWARD WOODWARD, Ryan, SCHNEIDER SCHNEIDER, Yaskawa, MOOG, EPRO, PROSOFT and other major brands
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