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Servo Drives are crucial components in motion control systems that take a low power command signal from a motion controller and amplify it into high power current or voltage to produce torque through the servo motor windings.
There are two key categories of servo drives, analog and digital. Analog servo drives function within the analog domain, with limited processing capability. They execute all drive functionality strictly in the analog realm, delivering power based on an analog control signal.
On the other hand, digital servo drives have additional intelligence, allowing them to offer more functionality, enhanced diagnostic capabilities, and easier configuration compared to their analog counterparts. They work based on digital signals, providing precise control over the servo motor's position, velocity, and torque.
Beyond these two, there's another kind of servo drive known as Intelligent Drives or Smart Drives. These are a type of digital drives that incorporate a portion, or all, of the motion controller functionality with the high power electronics of a motor drive. They vary in the amount of control functionality and the type of communication interface, with two major types being fieldbus-based and deterministic bus-based.
Fieldbus-based intelligent drives integrate all components of a motion controller and communicate via a serial port or a fieldbus network. They are typically used for non-coordinated motion control applications. Servo2Go® offers a range of network options for connecting servo drives in a multi-axis configuration, with choices depending on various factors like required bandwidth, update rate, performance, and cost.
Deterministic bus-based intelligent drives incorporate interpolation and control loop into the drive but rely on a motion controller for trajectory generation. The benefits of both types of intelligent drives include all-digital communication, detailed diagnostics, reduced cabling, high axes count, and short wiring distance between the drive and motor.
Resources
Servo Drive Categories
 | 100A4080-400 VDCput; 50A continuous / 100A peak | 19kW Output @ 400 VDC Request Quote | View Details |
| | 120A1020-80 VDCput; 60A continuous / 120A peak | 4.6kW Output @ 80 VDC Request Quote | View Details |
 | AB100C20040-175 VDCput; 100A continuous / 100A peak | 16.6kW Output @ 175 VDC Request Quote | View Details |
| | AB125A20040-175 VDCput; 80A continuous / 125A peak | 13.3kW Output @ 175 VDC Request Quote | View Details |
 | AB15A10020-80 VDC Input, 7.5 A Cont. (15 Peak) Request Quote | View Details |
| | AB200A10020-80 VDCput; 125A continuous / 200A peak | 9.5kW Output @ 80 VDC Request Quote | View Details |
| | AB20A20040-175 VDC Input, 12 A Cont. (20 Peak) Output Request Quote | View Details |
| | AB250A06020-54 VDCput; 150A continuous / 250A peak | 7.7kW Output @ 54 VDC Request Quote | View Details |
| | AB25A10020-80 VDC Input, 15 A Cont. (25A Peak) Output Request Quote | View Details |
 | AB30A10020-85 VDC Input; 15A continuous / 30A peak | 2.5kW Output @ 80 VDC Request Quote | View Details |
| | AB30A20040-175 VDCput; 15A continuous / 30A peak | 2.5kW Output @ 175 VDC Request Quote | View Details |
 | AB30A200AC30-125 VAC (50/60 Hz, 3ph) Input {optionally 40-175 VDC}; 10A continuous / 30A peak Request Quote | View Details |
| | AB30A200I40-175 VDCput; 15A continuous / 30A peak | 2.5kW Output @ 175 VDC Request Quote | View Details |
| | AB50A10020-80 VDCput; 25A continuous / 50A peak | 2.0kW Output @ 80 VDC Request Quote | View Details |
| | AB50A20040-175 VDCput; 25A continuous / 50A peak | 4.2kW Output @ 175 VDC Request Quote | View Details |