How to solve the displacement problem of hydraulic press?

How to solve the displacement problem of hydraulic press?

How to solve the displacement problem of the hydraulic press? The abnormality of the hydraulic press is generally reflected in the following three aspects: sensor, amplifier unit and system setting failure. Therefore, the maintenance process is mainly divided into three steps.

1. Check the system settings: The display in the workstation shows that the travel of the actuator is only 10 mm, which should be 50 mm under normal conditions, so the system needs to be considered, and if there is a problem with the settings, the system needs to be reset. After resetting the actuator's travel to +50mm, it was in the workstation and the values ​​displayed on the display board were still incorrect, so thought just repositioning the system would fix the problem.

2. Check the sensor: Since the tension testing machine system is a closed-loop system, the system must be disconnected before judging which part of the system is faulty. This cycle makes the system an open loop system. If the sensor signal is normal, disconnect the feedback signal of the sensor, after repeating several times, the feedback data of the sensor is measured as a linear change line, and the sensor is judged.

3. Check the amplifier unit: After eliminating the fault of the sensor, it is now necessary to check whether the amplifier unit is normal. First, disconnect the output signal of the amplifier unit system. Remove the output wiring, add a DC input signal to the amplifier unit through the workstation, and then measure the amplifier, after several repetitions, the output signal of the amplifier unit changes linearly to determine whether the amplifier unit is normal.

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