PFSA140 3BSE003816R1 Digital Input Output Module

PFSA140 3BSE003816R1 When braking, press the stop button SB2, the normally open contact of X401 disconnects the coil of Y430, so that KM1 is de-energized and released, while the normally closed contact of Y430 connects the coil of Y431, the coil of the contactor KM2 for braking is energized to adjust the phase sequence of the two-phase power supply, and the motor is in the state of reversed braking. At the same time, the normally open contact of Y430 disconnects the coil of Y432, KM3 is de-energized and released, and the series resistance R limits the braking current.

PFSA140 3BSE003816R1 When the motor speed decreases rapidly to a certain value, the KS1 normally open contact is disconnected, the X402 normally open contact disconnects the coil of M100, the normally open contact of M100 disconnects the coil of Y431, the KM2 is de-energized and released, and the motor stops quickly. Overload, the thermal relay FR normally open contacts closed, X403 two pairs of normally closed contacts disconnect Y430 and M110 coil, so that the KM1 or KM2 loss of power release, play a role in overload protection.

PFSA140 3BSE003816R1 is a scanning mode of operation, that is, the PLC signal input, data processing and control signal output, respectively, in a scanning cycle in different time intervals, in a batch mode, which not only makes the user programming is simple, not easy to error, but also makes the PLC’s work is not easy to be affected by the external interference; at the same time, the PLC is processing At the same time, the data processed by the PLC is more stable, which reduces errors in processing; in addition, the input and output control of the PLC is simpler, and is less likely to cause problems due to inappropriate timing.