a) Control of two motors (interlocking) Two motors that are controlled with separate start and stop pushbuttons must be able to run in two different ways: • If motor no. 1 is started, motor no. 2 must...

pls programing


a) Control of two motors (interlocking) Two motors that are controlled with separate start and stop pushbuttons must be able to run in two different ways: • If motor no. 1 is started, motor no. 2 must not be able to start • Is motor no. 2 started, motor no. 1 should not be able to start. • Two lamps must show which motor is running. Draw control current diagram and connect according to the diagram. Present the coupling to the lab engineer and test the coupling. b) Control of two motors with time relay A motor M1 is started and stopped with pushbuttons. Another engine M2 should start automatically 10 sec. after engine M1. When motor M1 is stopped, motor M2 must also stop. Two lamps should indicate that the motors are running, and a third lamp should illuminate when the relay is active, ie while it counts the 10 seconds. Draw control current diagram and main current diagram and connect according to the diagrams. Also draw assembly drawings for the contactors and relays you have used, with contact numbering. Then number all the contacts in the main power diagram and control current diagram. Present the coupling to the lab engineer and test the coupling. c) Level control The water level in a tank shall be controlled as follows: When a inverter is set to position 1, the filling pump P1 shall be controlled by two level switches so that the pump starts at a defined low level and stops at a defined high level. When a inverter is set in position 2 , the filling pump P2 shall be controlled in the same way as described above, ie by the same two level switches.3 Department of Computer and Electrical Technology If the pump that is running stops because the associated motor protection switches off, the other pump must start automatically when the lower level switch is activated again. Two lamps must indicate which pump is running. To simulate the level, use two pressure switches as level switches where the one indicating the lowest level must (of course) have a holding contact. Draw a control current diagram and connect according to the diagram. Present the coupling to the lab engineer and test the coupling d) Two pumps Two pumps P1 and P2 must each have their own set of start and stop pushbuttons. Due to the load on the mains, it must not be possible to start both at the same time. A time delay of 5 sec. will be sufficient. That is, regardless of which motor is started first, it should not be possible to start the other until after 5 sec. Draw the control current form and connect according to the form. Present the coupling to the lab engineer and test the coupling. e) Direction turner for three-phase motor You must connect a three-phase motor so that it can rotate one way or the other. Use three lights that indicate these three conditions. Use thermal motor protection to protect the motors. Fuses are connected to your 230 V power outlet. • First connect without a time relay and lamps, so that the motor rotates clockwise when you press S1, where you then have to press S0 before you can turn the direction of rotation by pressing S2 (and vice versa). .If you press the pushbutton for the opposite rotation while the engine is running the scaling thing happen • Now use a time relay (delayed on engagement) so that you delay the impact of rotation the other way when you stop the rotation one of the roads. It is desired that the motor should slow down the rotation speed in that it cannot connect voltage for rotation the other way before a certain set time has elapsed, eg 5 sec. This reduces the load on the motor. Connect three lamps so that they show when 1) the motor is running clockwise, 2) the motor is running counterclockwise and 3) while the waiting time to turn the direction of rotation is active. Draw control current diagram and main current diagram and connect according to the diagrams. The preview coupling to the lab engineer and test the coupling.