The British witten IVC1 - In 2416 Mr Series PLC meal ladder - the application of the control system design Industrial control -

Preface meal ladder is a kind of sundries elevator, box body are made of stainless steel. Much for hotel restaurants, canteens, transporting goods between floors. Now requires meal ladder is more and more beautiful appearance, clear and reliable control.

1 introduction this PLC for the British witten IVC1 - 2416 Mr, shape size is 182 mm * 90 mm * 71 wide. 2 mm, containing 590 g. Can be mounted with 35 mmdin card slot, and can be mounted with screws. Is the shenzhen city witten automatic control technology co. , LTD. Through the industrial control network provides the experience of industrial control net products.

2 process principle analysis of the elevator control cabinet layout is shown in figure 1:

1 elevator system, the hardware structure of the system shows the function of each part is shown in figure 2:

in figure 2 below for control cabinet connection after the completion of the figure

2. 1 main circuit

main circuit consists of three-phase ac input, the total power open, sharing contactor, up/down operation contactor, thermal relay protection, traction machine and brake unit.

2。 2 the PLC control circuit

2. 3

elevator position control circuit as a kind of special equipment, except for safe and reliable, also calls for smooth operation and accurate stop layer. This system adopts the magnetic plate installed on the capsules of isolation and installation YG - in the shaft 1 magnetic switch joint action determines the location of the capsules. Due to the magnetic switch and magnetic isolation plate movements can sometimes cause data loss floor, so add the total run time in program protection and floor more layer of protection, to increase the reliability of the elevator.

programming: X14 - X16 for floor stop - ping command input position switch, the error is convenient for field adjustable flat layer, can be adjusted by adjusting the timer delay time to bed.

below corresponding points for the input and output wiring diagram:

X1 input for the safety stop circuit. X2 corresponding to the input of door lock loop for safe and reliable operation, plus the time relay to validate input X2. X3 - X4 for upper and lower limit switch, which was nearly, can stop the layer under the stairs, and forced to display a, three floor indicator. X11- X13 1 - The three layers of floor input button. X7- X10 for the output contactor on-off testing function corresponds to verify the normally closed contact, can run on the upper and lower contactor can't absorb, release errors and common output contactor can't absorb, release error testing verification. X0 for normal/maintenance switch, X5 - X6 for overhaul, inching button switch on the state. Y10 for elevator to buzzer output, when X17 overload switch action will have the alarm buzzer output, and drive Y7 action to overload the lamp power supply. Y0, Y1 for upper and lower running contactor output corresponding points. Y2- Y4 button lights, Y14 - Y16 open the door for each floor lights, Y11 - Y12 light for upper and lower running direction. This program also design the elevator the total running time is no more than 25 s, otherwise will protect, make the elevator can not start. When the elevator to protect or contactor cannot absorb and release a mistake, the elevator will not be able to run, and the elevator floor indicator is flashing, only after 10 s failure to remove.

3 USES feeling after the British witten PLC or nice appearance, reasonable design, safe and reliable. If the output of the channel can be subdivided under is better, so you can output a variety of voltage, instead of using the relay. In this I didn't use relay, contactor under, but used normally open auxiliary contact run in parallel to drive the main contactor. If can run directly from the PLC to drive the main contactor so much the better.

technology section of the British witten IVC1 - 2416 Mr Series PLC controller in the control system of the meal ladder application design the British witten PLC in the application of pressure filter design industrial advantage in intelligent gateway is used in the PLC data acquisition system in PLC remote monitoring system for automobile gear manufacturing brought what advantage sea H01ZB for PLC + Zigbee wireless module, application in sewage treatment process design
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