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6SL3225-0BE37-5UA0
西門子產品訂貨號：6SL32250BE375UA0

西門子產品價格：168  RMB

西門子產品凈重：1.100 Kg

西門子產品承諾：質保一年，原裝*

西門子產品尺寸：270.00 x 225.00 x 85.00

概述

SINAMICS G120C, frame sizes FSAA to FSF, with Inligent Operator Panel IOP

SINAMICS G120C compact inverters offer a well-balanced combination of features to address a wide range of applications. They are compact, rugged devices that are easy to operate and can be optionally equipped with a basic or advanced operator panel.

SINAMICS G120C inverters are especially suitable when it comes to meeting the requirements of system integrators, OEMs and distributors regarding high productivity and tailored performance.

優勢

• Compact design
• Side-by-side design
• High power density, low envelope dimensions
• Simple installation in the tightest space
• Low space requirement
• Use in small control cabinets, close to the machine
• Optimized parameter set
• Optimized commissioning
• Getting Started document
• BOP?2 or IOP operator panels can be used
• Integrated USB connection
• Simple and fast software parameter assignment
• Simple to use during commissioning and in operation
• Minimized training costs, existing SINAMICS know-how can be used
• High degree of service friendliness, simple maintenance
• Plug-in terminals
• Cloning function using BOP?2, IOP or memory card
• Operating hours counter for "drive on" and "motor on"
• Fast mechanical installation
• Intuitive standard commissioning
• Component of Totally Integrated Automation
• Energy-efficient, sensorless vector control
• Automatic flux reduction with V/f ECO
• Integrated energy saving computer
• Safety Integrated (STO)
• Communications versions with PROFINET / EtherNet/IP, PROFIBUS DP, USS/Modbus RTU
• Coated modules
• Operation up to an ambient temperature of 60 °C (140 °F)

設計

SINAMICS G120C is a compact converter for control cabinet mounting in IP20 degree of protection where the Control Unit (CU) and Power Module (PM) function units are combined in one device.

The compact mechanical design and the high power density allow these devices to be installed in machine control enclosures and control cabinets for maximum space utilization. The SINAMICS G120C compact converter can be butt-mounted directly, without derating at temperatures up to 40 °C (104 °F).

SINAMICS G120C, frame size FSAA with BOP-2

SINAMICS G120C can be integrated into the widest range of applications, either using the integrated digital and analog inputs or via the integrated fieldbus interface (available in USS, Modbus RTU, PROFIBUS, PROFINET / EtherNet/IP versions). Especially the product versions with integrated PROFIBUS/PROFINET interface make full integration into the Siemens TIA family possible, therefore allowing the advantages of the seamless TIA product family to be fully utilized. SINAMICS G120C devices are preset in the factory so that they can be immediay connected to PROFIBUS and/or PROFINET fieldbus systems without parameterization.

SINAMICS G120C is also equipped with the safety function STO (Safe Torque Off) as standard, which is used to safely stop drives. As a consequence, machine manufacturers can simply comply with current machinery directives with minimum associated costs.

SINAMICS G120C can control asynchronous (induction) motors in the power range from 0.37 kW up to 132 kW (0.5 hp to 200 hp). Reliable and efficient motor operation is achieved by using state-of-the-art IGBT technology combined with vector control. The extensive range of functions integrated in the SINAMICS G120C also offers a high degree of protection for the converter and motor.

Line-side components

Line reactors

Line reactors smooth the current drawn by the converter and thus reduce harmonic components in the line current. Through the reduction of the current harmonics, the thermal load on the power components in the rectifier and in the DC-link capacitors is reduced as well as the harmonic effects on the supply. The use of a line reactor increases the service life of the converter.

Recommended line-side power components

Standard fuses can be used for the SINAMICS G120C. These must be dimensioned to comply with local regulations. In this chapter, you will find recommended components such as fuses and circuit breakers in compliance with IEC and UL regulations.

DC link components

Braking resistors

Excess energy in the DC link is dissipated in the braking resistor. The braking resistors are designed for use with the SINAMICS G120C. This has an integrated braking chopper (electronic switch).

Load-side power components

Output reactors

Output reactors reduce the rate of voltage rise (dv/dt) and the height of the current peaks, and enable longer motor cables to be connected.

Supplementary system components

Inligent Operator Panel IOP

Graphics-based, user-friendly and powerful operator panel for commissioning and diagnostics as well as local operator control and monitoring of SINAMICS G120C.

Basic Operator Panel BOP-2

A 2-line display to provide support when commissioning and troubleshooting the drive. The drive can be locally controlled.

Memory card

The parameter settings for an inverter can be stored on the SINAMICS SD memory card. When service is required, e.g. after the inverter has been replaced and the data have been downloaded from the memory card the drive system is immediay ready for use again. The associated memory card holder is integrated in the inverter.

PC inverter connection kit 2

For controlling and commissioning an inverter directly from a PC if the STARTER commissioning tool or SINAMICS Startdrive has been installed on the PC.

Spare parts

Shield plates

A set of shield plates is included in the scope of delivery for the motor and signal cables corresponding to the frame size of the SINAMICS G120C, and can also be ordered as spare parts.

Spare parts kit

This kit comprises four I/O terminals, one RS485 terminal, two pairs of Control Unit doors (1 × PN and 1 × other communication versions) and one blanking cover.

Set of connectors

A set of connectors for the line feeder cable, braking resistor and motor cable can be ordered corresponding to the frame size of the SINAMICS G120C inverter.

Roof-mounted fan

A roof-mounted fan (at the top of the device) comprising a pre-assembled unit with holder and fan can be ordered corresponding to the frame size of the SINAMICS G120C.

Fan unit

A replacement fan (at the rear of the device; heat sink) comprising a pre-assembled unit with holder and fan can be ordered corresponding to the frame size of the SINAMICS G120C.

集成

Connection example for SINAMICS G120C

USS/Modbus RTU communication interface

PROFIBUS DP communication interface

PROFINET, EtherNet/IP communication interface

6SL3225-0BE37-5UA0
西門子產品訂貨號：6SL32250BE375UA0

西門子產品價格：168  RMB

西門子產品凈重：1.100 Kg

西門子產品承諾：質保一年，原裝*

西門子產品尺寸：270.00 x 225.00 x 85.00

PM240, PM240?2 and PM250 Power Modules

西門子產品訂貨號：6SL32250BE375UA0

西門子產品價格：168  RMB

西門子產品凈重：1.100 Kg

西門子產品承諾：質保一年，原裝*

西門子產品尺寸：270.00 x 225.00 x 85.00

PLC在車床數控化改造中的應用

　　1 引言

　　PLC在機械制造的設備控制中應用非常廣泛，但在普通車床數控化改造中，用PLC作數控系統的核心部件還是一個新的課題。隨著PLC技術、功能不斷完善，這將是一種發展趨勢。本文對此加以討論。

　　2 車床的PLC數控系統控制原理設計

　　2.1 車床的操作要求

　　車床一般加工回轉表面、螺紋等。 要求其動作一般是X、Z向快進、工進、快退。加工過程中能進行自動、手動、車外圓與車螺紋等轉換;并且能進行單步操作。

　　2.2 PLC數控系統需解決的問題

　　車床的操作過程比較復雜，而PLC一般只適用于動作的順序控制。要將PLC用于控制車床動作，必須解決三個問題：

　　圖1 數控系統原理圖

　　1)如何產生驅動伺服機構的信號及X、Z向動作的協調;

　　2)如何改變進給系統速度;

　　3)車螺紋如何實現內傳動及螺紋導程的變化。

　　將PLC及其控制模塊和相應的執行元件組合，這些問題是可以解決的。

　　2.3 數控系統的控制原理

　　普通車床數控化改造工作就是將刀架、X、Z向進給改為數控控制。根據改造特點，伺服元件采用步進電機，實行開環控制系統就能滿足要求。Z向脈沖當量取0.01mm，X向脈沖當量取0.005mm。選用晶體管輸出型的PLC。驅動步進電機脈沖信號由編程產生，通過程序產生不同頻率脈沖實現變速。X、Z向動作可通過輸入手動操作或程序自動控制。車螺紋的脈沖信號由主軸脈沖發生器產生，通過與門電路接入PLC輸入端，經PLC程序變頻得到所需導程的脈沖。刀架轉位、車刀進、退可由手動或自動程序控制。圖1為數控系統原理圖。

　　3 PLC輸入、輸出(I/O)點數確定

　　所設計的車床操作為：起點總停、Z、X向快進、工進、快退;刀架正、反轉;手動、自動、單步、車螺紋轉換。因此，輸入需14點。根據圖1得輸出需9點。I/O連接圖如圖2所示(以三菱F1S-30MT)為例。

　　圖2 I/O連接圖

　　4 驅動程序(梯形圖)設計

　　4.1 總程序結構設計

　　手動、自動、單步、車螺紋程序的選擇采用跳轉指令實現。圖3是總程序結構框圖。若合上X12(X13、X14、X15斷開)，其常閉斷開，執行手動程序;若X12斷開，X13全上，程序跳過手動程序，指針到P0處，執行自動程序。

　　圖3 總程序框圖

　　4.2 手動程序梯形圖設計

　　手動程序、自動程序需根據具體零件設計，這里僅以Z向快進、工進、快退的動作為例加以說明。其梯形圖如圖4所示。

　　圖4 Z向手動程序梯形圖

　　在執行手動程序狀態下，按X0，Y1接通，作好起動準備。按X2，輔助繼電器M0接通。通過T63計時及Y2觸點組合，產生頻率為103/2i的脈沖信號(i為計時時間，根據需要設定，單位為ms)，驅動Z向快進。當按下X3時(M0斷開)，M1接通，M1與定時器T32組合使Y2產生頻率為103/2j的脈沖(j>i)，由Y2輸出，實現工進。按下X4時，M0、Y3同時接通，電機快速反轉，實現快退。限于篇幅，其它程序梯形圖略。[2]