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Control circuit with forward and reverse rotation, reverse braking and hierarchical speed regulation functions
Source: InternetPublisher:三月小雨 Keywords: Control circuit speed regulation current relay BSP Updated: 2020/12/20
The circuit is shown in Figure 3-168. It uses the controller SA to adjust the speed in stages and control the forward and reverse rotations; the reverse braking is controlled by the overcurrent relay KI connected in the rotor
circuit ; the current relays KIi~KI3 are used as the three relays of the motor. Phase overcurrent protection;
zero-voltage relay KA is used for undervoltage protection.
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