... such circumstances as overvoltage, overcurrent, short circuit, excessive temperature, abnormal feedback, etc.. Main ParametersControl power voltage AC:Series 110 AC 110V ... 20AOutput Voltage Accuracy: 0.1%Given input signal: 0±10VSpeed feedback voltage7V/1000R 9.5V/1000R13.5V/1000R 20V/1000RCan be ... must be taken.Table 1 DC servo control system tachogenerator feedback