Chapter 5 Running Mode And Controlling Wiring
Chapter 5 Running Mode And Controlling Wiring
According to the command mode and operation characteristics of a servo drive, it can be
divided into three operation modes: position control operation mode, speed control operation
mode and torque control operation mode.
The position control mode usually determines the displacement of the movement by the
number of pulses, and the pulse frequency of the external input determines rotation speed.
Because the position mode can strictly control the position and speed, it is generally used in the
positioning device. It is the most popular control mode and mainly used in robot, table placement
machine, carving and milling, CNC machines and so on.
The speed control mode controls rotation speed through the given analog quantity, the
given digital quantity and the given communication speed. It is mainly used in the constant-speed
applications. For example, the upper computer adopts position control mode and the servo drive
adopts speed control mode in application of carving and milling machines.
The torque control mode controls torque through the given analog quantity, the given
digital quantity and the given communication speed. It is mainly used in winding and unwinding
devices which have strict requirements on the force of material, such as winding device or
drawing fiber equipment and other tension control applications. The setting of torque should be
changed at any time according to the radius of winding to ensure that the force of material will
not change with the change of winding radius.
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