... (mm) Features:1. By using of DSP chip.2. Communication with RS485.3. Wide velocity ratio, constant torque ratio, speed regulation ... /R with U, V,W signal(standard)Control modePosition, Speed,Test, JOG runDynamic brakeBuilt-in (60w, 40Ω)Speed Frequency200Hz or moreSpeed fluctuation ... keep running)One suitable servo motor picture : AC Servo Drives with 1kw 220V