Servo incorporates encoder feedback onboard
A
Midwest Motion Products product story
Edited by the Engineeringtalk editorial team
Sep 24, 2002
Designed to accept unregulated DC from 20 to 80V DC, the Model M815-BL PWM servo amplifier features a continuous output current of 8A, and a peak of 15A for 1s.
Designed to accept unregulated DC from 20 to 80V DC, the Model M815-BL PWM servo amplifier features a continuous output current of 8A, 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-BL 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 earth faults.
The feature that sets the Model M815-BL apart from all the rest, however, is its novel "encoder feedback onboard" circuit, a frequency to analogue voltage convertor that allows the user to employ a DC motor with an optical encoder or scale in a closed velocity loop servosystem.
Very tight speed regulation can be obtained, despite typical torque disturbances, in a velocity-controlled servosystem.
Motor commutation is accomplished by Hall-effect sensor biasing.
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