Description
The DECS-200 offers all the features togetherwith flexibility and programmability expectedfrom one of today’s latest state-of-the-artmicroprocessor based products. The DECS200 is a total excitation control system in oneenclosure and contains all the functionalitynecessary to limit, control, and protect a motoror generator from operating outside of themachine’s capability. This gives the DECS200 the possibility to be installed in allconceivable applications on virtually any sizeof machine. STANDARD FEATURES • Microprocessor-based design • True RMS sensing, single or three phase • Up to 125Vdc output at 15Adc • 0.25% Voltage Regulation Accuracy • 20 standard stability selections • User customizable stability selection • Paralleling compensation • U/F compensation or V/Hz Ratio Limiter • Soft start build-up • FCR Mode (Built in Manual Mode) • Auto tracking between operating modes • Auto tracking between 2 DECS-200 units • Minimum Excitation Limiter • On and off-line Maximum Excitation Limiters • Stator Current Limiter • Var and Power Factor Controllers • Exciter Diode Monitoring (EDM) • Sequence of Events Recording • Oscillography • Voltage Matching • Eight generator protection features • Programmable output contacts • Front panel backlit LCD display • Front panel mounted RS-232 comm port • Side panel mounted RS-485 comm port • Modbus • protocol for RS-485 up to 1km • Setup from front panel HMI or by PC with free BESTCOMS user friendly setting software • Meets C37.90.1-1989 for Surge Withstand and Fast Transien • UL recognized, CSA certified, CE compliant
servo drives (servo drives), also known as "servo controller", "servo amplifier", is a controller used to control the servo motor, its role is similar to the frequency converter acting on the ordinary AC motor, is a part of the servo system, mainly used in high-precision positioning system. Generally, the servo motor is controlled through three ways of position, speed and torque to achieve high-precision transmission system positioning, and it is currently a high-end product of transmission technology.
In the speed closed loop of servo drive, the real-time speed measurement accuracy of motor rotor is very important to improve the dynamic and static characteristics of speed control of speed ring. In order to find the balance between measurement accuracy and system cost, incremental photoelectric encoder is generally used as the speed measurement sensor, and its corresponding common speed measurement method is M/T speed measurement. Although M/T velocity measurement method has a certain measurement accuracy and a wide measurement range, but this method has its inherent defects, including: 1) the speed measurement cycle must detect at least one complete code pulse, limiting the minimum measurable speed;
2) The timer switches of the two control systems used for speed measurement are difficult to maintain strict synchronization, and the accuracy of speed measurement cannot be guaranteed in the measurement occasions with large speed changes. Therefore, it is difficult to improve the performance of servo drive speed following and control by using the traditional speed loop design method.
Servo driver principle: At present, the mainstream servo drivers all use digital signal processor (DSP) as the control core, which can realize more complex control algorithms, and realize digitalization, networking and intelligence. Power devices generally use intelligent power module (IPM) as the core design of the drive circuit, IPM internal integrated drive circuit, and has overvoltage, overcurrent, overheating, undervoltage and other fault detection protection circuit, in the main circuit also add a soft start circuit to reduce the impact of the start process on the driver.
The power drive unit first rectifies the input three-phase or mains through the three-phase full-bridge rectifier circuit to obtain the corresponding direct current. The three-phase permanent magnet synchronous AC servo motor is driven by the three-phase sinusoidal PWM voltage inverter after the rectified three-phase power or mains. The whole process of the power drive unit can be simply said to be the AC-DC-AC process. The main topological circuit of the rectifier unit (AC-DC) is the three-phase full-bridge uncontrolled rectifier circuit.
The company focuses on DCS, PLC, robot, large servo four systems
The main products are various modules/cards, controllers, touch screens, servo drivers
Company advantage: Supply imported original products, professional production of spare parts
One year warranty, fast delivery time, complete supply !！！
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② For shipment outside Asia, please contact the seller.
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