Mechanical power slide control circuit with reverse working feed

The painting manipulator is controlled step by step using a step sequencer. First, the step sequence controller is introduced.
    (1) Step sequence controller The step sequencer (ss) can start the subsequent 7 internal relay coils (ST) one by one in order to
form a step sequencer. When the first internal relay marked (ss) is energized, the subsequent seven coils are released. Subsequently
, when the next internal relay marked (SrD) is energized, the other relays in this group of step sequencers are released. The energization sequence must be from
small to large, one by one. Therefore, the step sequencer is Combine several consecutive internal relays to coordinate their actions. Their
graphical symbols in the RLL diagram are shown in Table 2-1. ;-.
    In the EPS software, it is not specified which internal relay number the step sequencer starts from, nor There must be 7 (ST) relays following the (ss) coil , but the maximum is 7. If more than the guide step is required, two involved sequencers can be connected in series.     1f     (2), Chiqi manipulator The positioning control circuit is equipped with a factory. There are three colors of paint spray guns: green and blue. The manipulator moves in a channel with 4 stations. The manipulator can spray 3 colors, and 4 colors are sprayed on the 4 positions. Color, as shown in Figure 2T20a. A position sensor is set at the junction of each workstation . In addition, a position sensor is also set at the starting point and end point, for a total of 5 position sensors.