基于plc電鍍行車自動控制系統設計-資料下載頁

【導讀】本設計利用德國西門子PLCS7-200進行電鍍行車自動化控制。且能適應多種環境的可編程控制器PLC來控制整個工作流程的方案。表及整體程序流程圖。并以STEP7Micro/WIN32為編程軟件設計出電鍍行車自動。鍍生產效率，降低了勞動強度。

　　

【正文】 ce (1) downtime, must be two or more monitoring operation。 (2) the way the CPU on the front panel select switch from the Run to stop position。 (3) Close the PLC power supply mains, and then close the other to the power supply module Osaka。 (4) connected to the power supply rack power cord clear line number in mind and remove the link location, then remove the power rack and rack screws connected, power rack can be removed。 (5) CPU motherboard and I / 0 board in the bottom of the screw rotation after template removed。 (6) Installed in reverse order[14]。 3. Maintenance process and technical requirements (1) Measure voltage, use a digital voltmeter or accuracy of 1% of the millimeter, measure (2) The power rack, CPU board can only be removed when the main power cut off。 (3) RAM module to remove or insert the CPU from the CPU prior to disconnect the Pac’s power supply, so as to ensure the data is not confused。 (4) before removing RAM modules, check the battery module is working correctly, if the battery fault light is removed when the PAM module content will be lost。 (5) input / output board should be removed before the first turn off the mains, but if the production of necessary I / 0 boards can be removed at runtime programmable controllers, but the CPU board QVZ (overtime) lights。 (6) Pluggable template, to be more careful, gently, and the goods shipped out of static electricity。 (7) The replacement of ponents not live action。 (8) Maintenance must be placed after the template installed in place Second, installment and wiring 40 (1) The power line, the pilot wire as well as the PLC power line and the I/O line should distinguish the wiring, between the insulating transformer and PLC and I/O should use the double rubberized wire connection. (2) PLC should be far away from the strong jamming source like electric welding machine, the high efficiency silicon rectifier unit and the large scale power equipment, cannot install with the highpressured electric appliance in the identical switch cabi. (3) The input and output of PLC are best separate the line, the switch quantity and the simulation quantity must separate the placing. The simulation quantity signal39。s transmission should use the shielded wire, the shielding layer should an end or the both sides earth, and the earth resistance should be smaller than the shielding layer resistance 1/10. (4) The PLC elemental area and the expansion unit as well as functional module39。s ties cable should lie alone, prevents the outside signal the disturbance. (5) The exchange output line and the directcurrent output line do not use the identical root electric cable, the output line to be far away from the high tension line and the power line as far as possible, avoids parallel. Third, I/O end wiring 1. Input wiring (1) inputs the wiring not to surpass 30 meters generally. But if the environment disturbance is small, when the loss of voltage is not big, the input wiring may suitable long. (2)Inputs/the output line not to be able to use the identical root electric cable, the input/output line to be separated. (3)Uses the normally opened contact form to connect the input end as far as possible, causes the establishment the trapezoidal chart to be consistent with the relay schematic diagram, is advantageous for reading. 2. Outgoing junction (1) The output wiring divides into the independent output and the public output. In not group, may use the different type and the voltage class output 41 voltage. But can only use the identical type, the identical voltage class power source in the identical group39。s output. (2) Because the PLC output element is sealed on the print circuit wafer, and connects to the terminal strip, if will connect output element39。s load short circuit, will burn down the print circuit wafer, therefore, application fuse protection output element. (3)Uses when the relay outputs, withstands inductive load39。s size, will affect relay39。s service life, therefore, time use inductive load the selective relay working life must be long. (4) The PLC output load possibly has the disturbance, must therefore take the measure to control, if directcurrent output39。s after flow guarantees protects, the exchange output anti acmodates the absorbing circuit, the transistor and the bidirectional thruster output bypassed resistor protection. Fourth, outside security electric circuit to guarantee that the overall system can under the secure state the reliable work, avoids, because the external power supply breaks down, PLC to present the heavy economic loss which and the person casualty exceptionally, the disoperation as well as outputs by mistake creates, PLC the outside should install the essential protection circuit. (1) Stops the electric circuit anxiously. Regarding can cause the user to cause the damage the dangerous load, besides performs in the control procedure to consider, but also exterior should design the emergency stop electric circuit, causes when PLC breaks down, can cause the injury load power source reliably to shut off. (2)Fragment. The forward and reverse revolution and so on reversible operation39。s control system must establish the exterior electric appliance interlock protection。 the reciprocation moves and rises and falls motion the control system, must establish the exterior spacing protection circuit. (3)The programmable controller has selfchecking functions and so on surveillance timer, when inspects exceptionally, outputs pletely the 42 closure. But when programmable controller CPU breakdown cannot control the output, therefore, regarding can cause the user to cause the damage the dangerous load, to guarantee that the equipment moves under the secure state, must design