Rexroth HMS01.1N-W0110-A-07-NNN

Rexroth Rexroth Drive Power Unit HMS01.1N-W0110-A-07-NNN

Rexroth industrial control module/component DCS servo system first-hand source

5.5 kW... 132 kW power range

12.1 A... 250 A continuous current

12 A... 350 A. Maximum current

540 V... 750 V DC line voltage

Protection level IP20

The Rexroth Rexroth driver power unit HMS01 single axis inverter is powered by DC and generates controlled AC output voltage with variable frequency amplitude through DC, which is used to operate the motor. This device is equipped with a control unit slot with various interfaces for connecting to automation environments, suitable for encoder systems, safety technology, and other digital and analog signals. The firmware of the control unit controls the inverter and provides various additional functions. In multi axis applications, the inverter is powered by the DC bus of the HMV01 or HMU05 power supply equipment. In addition, the inverter is powered by the DC bus of the HCS converter (for smaller shaft packages) and appropriate power storage in the HCS.

Rexroth servo drive, brief description of REXROTH

Characteristic Overview:

The accuracy of open-loop systems is relatively low due to the step error, start stop error, and mechanical system error of servo drives, which directly affect the positioning accuracy. Compensation type improvement should be adopted, which has the advantages of both open-loop and closed-loop systems, namely open-loop stability and closed-loop accuracy. It will not cause system oscillation due to resonance frequency, crawling, or loss of motion of the machine tool. Feedback compensation type open-loop control does not require gap compensation and pitch compensation.

For closed-loop control systems, reasonable design can achieve reliable stability and high accuracy, but directly measuring the position signal of the workbench requires the use of position detection devices with high installation and maintenance requirements, such as gratings, magnetic rulers, or linear induction synchronizers. By measuring the angular displacement of the transmission shaft or screw, the equivalent feedback signal of the position output can be indirectly obtained. Due to the fact that the errors caused by this part of the transmission cannot be automatically compensated by the closed-loop system without including the transmission chain from the rotating shaft to the worktable, the errors caused by this part of the transmission cannot be automatically compensated by the closed-loop system. Therefore, this closed-loop control system composed of equivalent feedback signals is called a semi closed loop servo drive, and this control method is called a semi closed loop control method.

Servo drive, also known as' servo controller 'or' servo amplifier ', is a type of controller used to control servo motors. Its function is similar to that of a frequency converter acting on a regular AC motor, and it is a part of the servo system, mainly used in positioning systems. The positioning of the transmission system is generally achieved by controlling the servo motor through three methods: position, speed, and torque. Currently, it is a transmission technology product.

Currently, mainstream servo drives use digital signal processors (DSPs) as the control core, which can implement complex control algorithms, achieve digitization, networking, and intelligence. Power devices commonly use drive circuits designed with intelligent power modules (IPMs) as the core. IPMs integrate drive circuits internally and have fault detection and protection circuits for overvoltage, overcurrent, overheating, undervoltage, etc. Soft start circuits are also added to the main circuit to reduce the impact of the start-up process on the driver. The power drive unit rectifies the input three-phase power or mains power through a three-phase full bridge rectifier circuit to obtain the corresponding DC power. After rectification, the three-phase power or mains power is used to drive the three-phase permanent magnet synchronous AC servo motor through a three-phase sine PWM voltage type inverter frequency conversion. The entire process of the power drive unit can be simply described as the AC-DC-AC process. The main topology circuit of the rectifier unit (AC-DC) is a three-phase full bridge uncontrolled rectifier circuit.

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