drive electronics SK 500E - Modular frequency inverter

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SK 500E - Modular frequency inverter

Following its introduction in the market the SK 500E product series has become successfully established and now the power range has been extended to 90kW. This extends the success factors of these components to a wider field of applications.


Modular compact inverter: SK 500E

With the SK 500E series of frequency inverters, Getriebebau NORD offers intelligent and costeffective drive solutions with scaleable equipment options, which are all fully compatible with regard to motor performance range, supply voltage and sizes. The basis for all models is a well-equipped basic unit with expansion possibilities through optional modules. SK 500E inverters are suitable for all application areas and can be easily adapted to specific requirements with plug-in technology units.


Performance grading:

The SK 500E product series offers a wide range of features which are necessary for application-specific drive solutions. Through different configuration levels, these can be used "in the same box". The inverters include the following functions, which are state-of-the-art for industrial applications.

  • "Safe stop" (STO) as per EN ISO 13849-1 Cat.4,
    Performance level e EN 61508 SIL3

  • CANopen interface on board

  • Incremental encoder input (TTL) on board

  • Absolute encoder via CANopen, SSi, BiSS, Hiperface, EnDat

  • POSICON positioning control

  • External 24V power supply for control board

  • Synchronous motor operation (PMSM)

  • PLC logic function


Sizes 1 - 4 (0.25 - 7.5 kW):
Frequency inverter SK 500E with integrated mains unit / SK 505E with external 24V supply

SK 500E / SK 505E basic equipment:

  • Sensorless current vector control (ISD control)

  • Line filter Class C2, Class C1 up to 5 m

  • Brake management, electro-mechanical motor brakes

  • Brake chopper for braking resistor

  • RS 232 PC diagnostic interface

  • 4 switchable parameter sets

  • All normal drive functions

  • Automatic flux optimisation (energy saving function).

  • Process controller / PID controller

  • Consistent parameter structure

  • Simple to operate

  • All common field bus systems

  • Factory setting for parameters for standard applications

  • Scalable display values

  • High quality regulation and short reaction times


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Q:How is the single chip machine controlled
The single chip machine only outputs the signal, after the isolation circuit, the power switch circuit drives the motor. Control ordinary three asynchronous motor can microcontroller output signal after the triode drive a small power relay, ac contactor, driven by relay and motor control. It can also be used as a single chip to drive the power relay directly after the triode is enlarged. There are a lot of methods. As for the driver servo, the signal of the single chip port can be directly driven by the decoupled isolation, and the actuating signal required by the servo driver itself is a weak signal.
Q:What does the DIR in the step motor drive mean
The upstairs answer is absolutely right! DIR is abbreviated in English, meaning direction; CP is an abbreviation for forward pulse. FREE is the motor FREE release signal
Q:The frequency of stepping motor drives decreases, and why does the stepping in electrical opportunity vibrate?
Points frequency increased, to increase the pulse frequency accordingly, otherwise the motor speed will decline. Stepper motor as the name suggests is step by step to go can also be understood as a pause, jitter will obviously increase when speed is slow, but not creating turn, slow down if the motor won't turn, that's your connection error, or there is something wrong with the machine. Or the driver has a problem.
Q:Step motor drive, static current setting, what is the difference between setting ON or OFF?
Stepper motors are mostly used constant current control, the motor is not running, winding through the setting of current, still can cause motor calorific particularly severe, if it is a horizontal axis, can flow through a half way, reduce the motor to stop running current, reduce energy consumption and fever, if it is a vertical axis to consider to keep the torque of motor output to choose whether to half the size of the flow. The na control EZM series drive, the user can according to the size of the need to set a flow and flow into the half time, can minimize the fever of the machine.
Q:Is there a ring pulse distributor in the step motor drive?
There is a circular pulse distributor in the motor drive, as long as a single chip is given the direction signal and the pulse signal. If the "drive" that is used is not a real drive, it is simply a drive that amplifies the power, That would require a single chip program to do the pulse allocation without the need for additional directional and pulse signals.
Q:How do you get a broken stage
If you choose to intelligent stepper drive such as the British EZM series drives, this kind of problem is very easy to recognize: if the motor internal short circuit, the drive will be submitted to the over-current fault; If the motor winding opens, the driver fails to report. If the internal parts of the motor have problems, they will be noisy and abnormal.
Q:Does the servo motor drive need 3C certification
The actuator voltage is greater than or equal to 36 volts required for 3C certification.I hope my answer will help you.
Q:The servo motor drive is compared to the cylinder drive, which is more energy saving energy?
So this is also going to be better than that, right? The servo motor is expensive, the cost is not proportional, but how can the precision cylinder ratio? The legendary servo cylinder accuracy is only 0.1 mm. Besides, energy consumption, if you have the gas supply system, that needless to say, cylinder and energy saving, but if you don't have a gas supply system, then you need to provide a gas supply system, air compressor, energy consumption is very much, and the energy consumption of the servo motor is dead, is 400 w, 400 w. In short, these two things are too far apart to be comparable.
Q:How does the car drive motor choose?
From the point of view, you are not a small car. How to supply electricity is a problem. The power of 4Kw is not small, the power is rated so large, the dc motor is too heavy and the size is not small. Consider the choice of ac servo motors
Q:What is the difference between the speed control mode of servo drive and the position control mode?
Speed control is analog quantity control, position control is pulse control. The speed control mode USES 0-10 voltage to adjust the speed, which is the analog quantity control mode. The one that your teacher says is pulse control regardless of speed or position, it's just in position control mode. The velocity is the frequency of your pulse, the number of pulses that you send out. Does that make sense?

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