Tight speed regulation for novel servo design
A
Midwest Motion Products product story
Edited by the Engineeringtalk editorial team
Aug 14, 2002
The Model M815-BR servo drive is a novel unique velocity loop encoder feedback device.
The Model M815-BR PWM servo amplifier accepts input voltages ranging from 20 to 80V DC (unregulated), and features a continuous output current of 8A, with and a peak of 15A for 1s.
The amplifier accepts a typical input command signal of +/-10V DC, or up to 35V DC maximum.
Measuring just 5.4 x 1.0 x 3.2in, the Model M815-BR is armed with a number of useful standard features that include adjustable peak and continuous current limiting, a scaleable input command signal, tachometer scaling, and built in diagnostics with protection against overvoltage, overtemperature, and ground faults.
The feature that sets the Model M815-BR apart from all the rest, however, is it's new E-FOB circuit.
This unique design employs Midwest Motion Products' standard encoder feedback onboard circuit, a frequency to analogue voltage convertor that allows the user to employ a DC motor with an optical encoder in a closed loop velocity servosystem.
Very tight speed regulation can be obtained, despite typical torque disturbances, in a velocity-controlled servosystem.
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