Servo motors run on negative feedback, which means that the control inputs are closely compared to the actual position via sensors. If there is any difference between the physical value and the desired value, the error signal is amplified, converted, and used to drive the system in the direction needed to reduce or eliminate the error.
The servo motor is controlled by variable width pulses sent from the microcontroller output pins to the motor control line. The axis angle is determined by the duration of the pulse, also known as pulse width modulation (PWM). This pulse must have specific parameters: minimum pulse, maximum pulse, and repetition rate.
Given these constraints, neutral is defined as the position where the servo has exactly the same amount of potential rotation in the clockwise direction as it does in the counterclockwise direction. Note that different servomotors have different constraints on their rotation, but they all have a neutral position that is always around 1.5 milliseconds (ms).
High Overload Capability
Kinco servo drives can handle instantaneous load requirements up to three times the unit's rated power.
Communication Interface
A standard CAN bus interface is available in the FD AC servo drive, simplifying integration. Based on the Modbus protocol, up to 31 servo motors can be connected via the RS485 interface.
Transmission distances of up to 4,000 feet are possible when using the RS485 interface. Fieldbus and EtherCAT modules are also available. the Anaheim Automation Servo Drives can also communicate with PLCs, VFDs, another servo drive, HMIs/industrial touchscreens, and more.