hydromec motor Germany hydromec model hydromec price

hydromec motor is a discrete value control motor that converts electrical pulse excitation signals into corresponding angular or linear displacement. This motor moves one step for each input electrical pulse, so it is also called a pulse motor. It is a special micro motor that converts electrical pulse signals into angular displacement to control rotor rotation. It serves as an actuator in automatic control devices. For each input pulse signal, the stepper motor advances one step, hence it is also known as a pulse motor. Stepper motors are widely used in peripheral equipment of digital computers, as well as in printers, plotters, and disk drives. The drive power supply of a stepper motor consists of a variable frequency pulse signal source, a pulse distributor, and a pulse amplifier, which provide pulse current to the motor windings. The operating performance of a stepper motor depends on the good coordination between the motor and the drive power supply. The advantages of stepper motors include no cumulative error, simple structure, convenient use and maintenance, low manufacturing cost, and high ability to drive load inertia. They are suitable for small and medium-sized machine tools and applications with low speed and precision requirements. The disadvantages are lower efficiency, significant heat generation, and occasional "step loss".

hydromec motor commissioning method

Motor commissioning: 1, initialize parameters. Before wiring, initialize the parameters first. On the control card: select the control mode; clear the PID parameters; ensure the enable signal is disabled by default when the control card is powered on; save this state to ensure it is restored upon subsequent power-ups. On the servo motor: set the control mode; set enable control to external; set the gear ratio for encoder signal output; set the proportional relationship between the control signal and motor speed. Generally, it is recommended that the maximum design speed during servo operation corresponds to a control voltage of 9V. 2, wiring. Power off the control card and connect the signal lines between the control card and the servo. The following lines must be connected: the analog output line of the control card, the enable signal line, and the encoder signal line output from the servo. After rechecking that the wiring is correct, power on the motor and the control card (as well as the PC). At this point, the motor should not move and should be easily rotated by external force. If this is not the case, check the enable signal settings and wiring. Rotate the motor by external force to check if the control card can correctly detect changes in motor position; otherwise, check the encoder signal wiring and settings. 3, test direction. For a closed-loop control system, incorrect feedback signal direction will have disastrous consequences. Enable the servo via the control card. The servo should rotate at a low speed, which is known as "zero drift." Most control cards have commands or parameters to suppress zero drift. Use this command or parameter to see if the motor speed and direction can be controlled. If not, check the analog wiring and control mode parameter settings. Confirm that a positive number causes forward rotation and increased encoder count, while a negative number causes reverse rotation and decreased encoder count. If the motor has a load with limited travel, do not use this method. Do not apply excessive voltage during testing; it is recommended to keep it below 1V. If the directions are inconsistent, modify the parameters on the control card or motor to align them. 4, suppress zero drift. In closed-loop control, zero drift affects control performance and should be suppressed. Use the zero drift suppression parameters on the control card or servo to carefully adjust the motor speed close to zero. Since zero drift has some randomness, absolute zero speed is not required. 5, establish closed-loop control. Re-enable the servo via the control card and input a small proportional gain on the control card. What constitutes "small" is subjective; if unsure, input the minimum value allowed by the control card. Enable the control card and servo. The motor should now roughly respond to motion commands. 6, adjust closed-loop parameters. Fine-tune the control parameters to ensure the motor moves according to the control card's commands. This is essential work that relies largely on experience, so details are omitted here.

hydromec motor classification

Motors are classified into reactive and Sawyer types. The Sawyer linear stepper motor consists of a stationary part (called the reaction plate) and a moving part (called the mover). The reaction plate is made of soft magnetic material with uniformly distributed teeth and slots. The motor mover consists of permanent magnets and two coil-carrying magnetic poles A and B. The mover is supported by an air cushion to eliminate mechanical friction during movement, ensuring smooth operation and improved positioning accuracy. The maximum moving speed of this motor can reach 1.5 m/s, acceleration can reach 2g, and positioning accuracy can exceed 20 microns. Two Sawyer linear stepper motors assembled perpendicularly form a planar motor. By applying different combinations of control currents to the motors in the x direction and y direction (Figure 3), the motor can perform arbitrary geometric trajectory movements in the plane. Large automatic plotters are new devices combining computers and planar motors. Planar motors can also be used in laser cutting systems, with control accuracy and resolution reaching tens of microns.

hydromec motor speed regulation

An impeller is added between the motor shaft and the load shaft. Adjusting the pressure of the liquid (usually oil) between the impellers achieves the purpose of regulating the load speed. This speed regulation method is essentially a slip power consumption approach. Its main disadvantages are decreasing efficiency as speed drops, the need to disconnect the motor from the load for installation, heavy maintenance workload, and the need to replace components such as shaft seals and bearings periodically. The site is generally dirty, making the equipment appear low-grade, and it is considered an obsolete technology. Manufacturers interested in speed regulation technology in the early days either had no high-voltage speed regulation options or considered cost factors, leading to some applications of hydraulic couplings, such as water pump stations, boiler feed pumps and induced draft fans in power plants, and dust removal fans in steel mills. Today, some old equipment is gradually being replaced by high-voltage frequency converters during retrofits. The frequency converter is a low-voltage type, using input step-down transformers and output step-up transformers to interface with the high-voltage grid and motor. This was a transitional technology when high-voltage frequency conversion technology was immature. Due to the low voltage of low-voltage frequency converters, the current cannot increase indefinitely, limiting the converter's capacity. The presence of the output transformer reduces system efficiency and increases footprint. Additionally, the magnetic coupling capability of the output transformer weakens at low frequencies, reducing the converter's load-bearing capacity during startup. There is significant harmonic distortion to the grid. Using 12 pulse rectification can reduce harmonics but may not meet strict harmonic requirements. The output transformer amplifies the dv/dt generated by the converter equally during step-up, requiring filters for use with standard motors to prevent corona discharge and insulation damage. Using special variable frequency motors can avoid this situation, but high-low type frequency converters are preferable.

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