6U Modular Multi-Axis Linear Amplifier Systems
The VRS-LA6U Varedan Rack Systems build upon the proven performance and reliability of Varedan Technologies linear amplifiers and VPS power supplies by enabling the creation of compact and modular multi-axis packages in the industry standard rack mountable 6U form factor. The LA6U Linear Servo Amplifier Series are the perfect choice for systems requiring low radiated noise and zero distortion. These high power linear amplifiers are well suited to drive loads such as brushless and brush servo motors or voice coils. Our designs incorporate class AB linear output stages for true linear output.
The design of these amplifiers includes an onboard high-speed DSP that monitors all key system functions in real time, and provides protection for the outputs by limiting output power to a “Safe Operating Area”. An intelligent user interface allows setup and storage of all system parameters via the serial interface. Non-volatile memory provides storage of the parameters during power off conditions.
A complete multi-axis system of up to five LA6U linear amplifier modules and one VPS-LA6U power supply module can be installed in a standard 19 inch rack reducing system wiring and system complexity. The pluggable LA6U linear amplifier modules are available in multiple power levels and motor configurations including three-phase brushless, single-phase brush/voice coil, and the new “Independent” configuration capable of driving three separate single phase loads from each LA6U amplifier module. This allows the engineer to create and configure up to an astonishing 15 axis high power precision linear motion control solution with one 6U size 19 inch rack mountable enclosure.
Modes of Operation
In current mode the amplifier is commutated by an external controller. Our Linear Amplifier Series are designed to drive single & 3-phase loads by analog input commands.
These current mode linear amplifiers are available in the following standard configurations:
“T-Mode” – Three-phase current output. This configuration is used for driving three phase rotary or linear motors with a full-bridge output configuration. In this configuration the amplifier receives two sinusoidal current commands for phases A and B (ABSine). The phase C command is generated internally in the amplifier.