ABB變頻器培訓資料

1、ABB變頻器培訓資料IGBT Supply Unit (ISU) IGBTIGBT Supply Unit (ISU) IGBT整流單元整流單元ACICUConverter RMIOISU1 L 1242 rpm ISPEED 1242 rpmCURRENT 76 ATORQUE 86 %Filter unitFIUDCIGBT Supply Unit (ISU) IGBTIGBT Supply Unit (ISU) IGBT整流單元整流單元ISU Block Diagram ISUISU Block Diagram ISU框圖框圖Charging circuit充電回路LCL filterL

2、CL濾波器Line Converter電源側變流器 IGBT Power SwitchesIGBT Power Switches IGBT IGBT功率開關器件功率開關器件 ACS 800 MultiDrive Hardware ACS 800 MultiDrive Hardware ACS800 ACS800多傳動硬件多傳動硬件 Input Filter Input Filter 輸入側濾波器輸入側濾波器 DTC Based Control DTC Based Control 基于基于DTCDTC技術的控制技術的控制 Power Rating 70 - 5450 kVA Power Rati

3、ng 70 - 5450 kVA 功率范圍功率范圍 70705450kVA5450kVACore Technology Core Technology 核心技術核心技術Main Switch Main Switch 主回路開關主回路開關The cabinet (1/3) contains The cabinet (1/3) contains 輔助控制柜和輸入柜輔助控制柜和輸入柜qCircuit breaker or contactorCircuit breaker or contactor斷路器斷路器 或或 接觸器接觸器qDisconnector (if not withdrawable Di

4、sconnector (if not withdrawable circuit breaker)circuit breaker)隔離開關（如果不使用可抽出的斷路器）隔離開關（如果不使用可抽出的斷路器）qAuxiliary power distributionAuxiliary power distribution輔助電源配電輔助電源配電qOptions like emergency stop circuitsOptions like emergency stop circuits急停電路等可選件急停電路等可選件LCL Filter LCLLCL Filter LCL濾波器濾波器The cabi

5、net (2/3) contains LCLThe cabinet (2/3) contains LCL濾波器濾波器: :qFilter (LCL) for buffering switching Filter (LCL) for buffering switching frequency from net. frequency from net. LCLLCL濾波器用于隔離高頻開關頻率進入電濾波器用于隔離高頻開關頻率進入電網(wǎng)網(wǎng)qVentilator for filterVentilator for filterLCLLCL濾波器風道濾波器風道IGBT Supply Module IGBTIG

6、BT Supply Module IGBT整流模塊整流模塊The cabinet (3/3) contains IGBTThe cabinet (3/3) contains IGBT整流整流: :qRegenerative IGBT converter for Regenerative IGBT converter for supplying DC power. The converter supplying DC power. The converter is hardware compatible with motor is hardware compatible with motor i

7、nvertersinverters可回饋可回饋IGBTIGBT整流器提供直流能量。整流器提供直流能量。IGBTIGBT整流器與電機側逆變器硬件兼容。整流器與電機側逆變器硬件兼容。qUltra fast (25 microsecond) control Ultra fast (25 microsecond) control for DC voltage and gives supreme for DC voltage and gives supreme voltage dip immunityvoltage dip immunity快速（快速（2525微秒）的直流電壓控制提供完微秒）的直流電壓控

8、制提供完美無波動的直流電壓。美無波動的直流電壓。qInverter ventilatorsInverter ventilatorsIGBTIGBT整流模塊風道。整流模塊風道。IGBT Supply Module IGBTIGBT Supply Module IGBT整流模塊整流模塊Power ratings Power ratings 功率等級功率等級Regenerative operation by selfcommutating IGBT bridgeRegenerative operation by selfcommutating IGBT bridge通過自換向通過自換向IGBTIGB

9、T橋實現(xiàn)能量回饋橋實現(xiàn)能量回饋440, 460, 500 V440, 460, 500 V525, 575, 660, 690 V525, 575, 660, 690 V100 - 2490 kVA100 - 2490 kVA100 - 2960 kVA100 - 2960 kVA70 - 5450 kVA70 - 5450 kVA380, 400, 415 V380, 400, 415 V400V IGBT Supply Units400V IGBT Supply Units400V IGBT400V IGBT整流單元整流單元500V IGBT Supply Units500V IGBT S

10、upply Units500V IGBT500V IGBT整流單元整流單元690V IGBT Supply Units690V IGBT Supply Units690V IGBT690V IGBT整流單元整流單元R6i - 4 x R8i ISUR6i - 4 x R8i ISU模塊產品供貨情況介紹模塊產品供貨情況介紹從 60 kVA 到 1840 kVA, 400V, 500V 和 690V 和電機側相同的逆變器模塊只有一種模塊規(guī)格用于 60 到 140 kVA只有一種模塊規(guī)格用于 170 到 1840 kVA獨立單元需要外部充電電路LCL-濾波器是獨立落地式帶輪子的單元 (R8i)輔助控

11、制電路可以通過 I/O 或現(xiàn)場總線控制外部 I/O 和控制 (RDCU-02)易于服務和維護與電機側相同的逆變器模塊和控制部分 - 更少的備件插接式連接端子 (R8i + LCL 濾波器 )主要的元件可以從一個方向更換可以通過控制盤或 DriveWindow 調試優(yōu)越的低諧波性能優(yōu)越的低諧波性能DTCDTC 和和 LCL LCL 濾波器一起濾波器一起- - 諧波小諧波小LCL LCL 濾波器去除高頻和中頻諧波濾波器去除高頻和中頻諧波 ( (高于高于 1 1 kHz)kHz)基于基于DTC DTC 技術的進線側逆變器去除低頻諧波技術的進線側逆變器去除低頻諧波 (1 kHz (1 kHz 以下以下

12、) )結果結果: : 性能遠遠優(yōu)于多脈波二極管整流器性能遠遠優(yōu)于多脈波二極管整流器MLCL LCL 濾波器濾波器進線側逆變器進線側逆變器( (整流橋整流橋) )電機側逆變電機側逆變器器電機電機R6i, R7i 和 4x R8i ISU 模塊 + LCL 濾波器R6i , R7iR8i 170 - 1840 kVA380V - 690V70 - 140 kVA380V - 690VLCL-濾波器用于 R8i- 4 x R8iIGBT IGBT 供電單元供電單元: : 結構結構ISU供電單元: R8i - 12xR8i + LCLISU 模塊是一種尺寸裝有輪子和插接式連接器LCL模塊是一種尺寸裝有

13、輪子兩種柜體形式:600 mm 寬, 1 x ISU / R8i + 1 x LCL (小型號)800 mm 寬, 2 x ISU / R8i + 1 x LCL (大型號)ABB ABB 多傳動多傳動: : LCL LCL 正弦波濾波模塊正弦波濾波模塊進線側電抗器進線側電抗器電容器電容器逆變器側電抗器逆變器側電抗器ABB ABB 多傳動多傳動: : LCL LCL 正弦波濾波模塊正弦波濾波模塊n nLCLLCLmmR8i Quick Connector KITsR8i Quick Connector KITsLCLLCLR8iR8iLCLLCL2 2R8iR8iLCLLCL2 2R8i RI

14、TTALR8i RITTAL2 2LCLLCL3 3R8iR8i2 2LCLLCL3 3R8i RITTALR8i RITTALALCL_1X_X Quick ALCL_1X_X Quick Connector KITConnector KITRITTAL TS8 example / R8i assembly kitsl RITTAL TS8 example / R8i assembly kitsl = Mounting kit = Plug connector kit ISUISU的基本原理的基本原理ISU的基本原理通過一個交流電抗器的等效電路和矢量圖的來表述。 這里：_ 電動 _ _ _

15、發(fā)電 U1 電網(wǎng)電壓矢量 U2 變頻器電壓矢量UL交流電抗器電壓矢量y1 電網(wǎng)磁通矢量 y2變頻器磁通矢量 yL交流電抗器磁通矢量 d功率轉換角 ISUISU的基本原理的基本原理ISU 的主要功能是控制電網(wǎng)和直流母線之間的能量轉換。交流電抗 器的使用目的(電抗的表達式 X = jwL)是平波以及給開關式供電單元 工作做能量儲存。在電網(wǎng)和ISU 之間的能量轉換方程如下所示：僅當在兩個電壓矢量之間存在角度差時，傳遞有功功率。無功功率的傳遞方程如下所示意： ISUISU的基本原理的基本原理為了得到所需的幅值和有功無功的流向，必須控制變頻器的電壓矢量幅值及其相位d (相對線電壓矢量) 。通過保持電纜和

16、傳動設備之間的功率( 能量)平衡，對直流母線電壓進行控制。 相角符號決定了功率流向,這樣，ISU既能夠從電網(wǎng)獲取能量，也能發(fā)出能量返回電網(wǎng) 。 為了在對應的輸出電壓等級實現(xiàn)COS = 1.0通過設置磁通的大小，來控制交流輸入電壓。 對ISU進行控制必須測量直流母線電壓和兩個線電流。定子磁通（ISU 電壓矢量的積分）的計算是通過對電壓矢量（用來產生ISU的輸出電 壓）積分得到的，這是因為電網(wǎng)上存在的電壓可以認為是由繞組的旋轉磁場所產生的。 每個繞組是線電壓的一相。繞組上的電壓能用下面的 公式來表達： ISUISU的基本原理的基本原理ISU 所產生的實際轉矩是通過磁通和電流的矢量積計算得到的： 功

17、率是由轉矩和角速度的乘積得到的，這樣，ISU既能夠從電網(wǎng)獲取能量，也能發(fā)出能量返回電網(wǎng)： P = wT 如果電網(wǎng)的頻率是一個常量，那么功率就直接和轉矩成正比。通過控制 轉矩，在ISU和電網(wǎng)之間所傳送的功率就可以設置成某個值，從而保證直流環(huán)節(jié)電壓的穩(wěn)定。這些基本條件就使得通過磁通和轉矩實現(xiàn)直接轉矩控制。 DTC Applied to Line ConverterDTC Applied to Line ConverterDIRECT TORQUE CONTROL = DIRECT POWER CONTROLDIRECT TORQUE CONTROL = DIRECT POWER CONTROL直接

18、轉矩控制直接功率控制直接轉矩控制直接功率控制THE VOLTAGE AT NETWORK IS GENERATED BY THE FLUX THE VOLTAGE AT NETWORK IS GENERATED BY THE FLUX 通過磁通控制電網(wǎng)側電壓通過磁通控制電網(wǎng)側電壓THE POWER CAN BE INTERPRETED DIRECTLY TO TORQUETHE POWER CAN BE INTERPRETED DIRECTLY TO TORQUE功率與轉矩具有直接對應的關系功率與轉矩具有直接對應的關系UddtllPTilcwwDTC DTC 整流技術整流技術DTC Contr

19、ol loop DTCDTC Control loop DTC控制環(huán)控制環(huán)Controls amplitude of flux (=voltage) Controls amplitude of flux (=voltage) and torque (=power)and torque (=power)控制磁通（電壓）與轉矩幅值（功率）控制磁通（電壓）與轉矩幅值（功率）sr34UU5U6U2U1Uxyrotation direction sHysteresis Control Hysteresis Control 滯環(huán)控制滯環(huán)控制Load Step Load Step 負載階躍負載階躍 Main

20、 goal is to stabilize dc voltage Main goal is to stabilize dc voltage Load step of 40 kW (P nom=50 kW)Load step of 40 kW (P nom=50 kW)主要目標為穩(wěn)定的直流電壓主要目標為穩(wěn)定的直流電壓負載階躍為負載階躍為40kW (P nom=50 kW)40kW (P nom=50 kW)Current Waveform Current Waveform 電流波形電流波形SMALL HARMONIC CONTENTS (THD 5 %)SMALL HARMONIC CONTEN

21、TS (THD 5 %)低諧波含量（低諧波含量（THD5%)THD100000 h 壽命壽命 100000 h100000 hn Capsulated in module with cooling fan模塊內置冷卻風機模塊內置冷卻風機Filter construction Filter construction 濾波器結構濾波器結構Technology, control features Technology, control features 控制特性控制特性DTC based control, 3 kHz average fSW 基于DTC的控制，平均開關頻率3kHzFast contr

22、ol, 25 us time level for measurements and control loop高速控制，25微秒級的測量和控制環(huán)New current control methodNew current control method produces sinusoidal line current and damps the filter resonance (patent pending)新的電流控制方式產生正弦波電流，阻尼濾波器諧振Voltage raise: 400 V input and 690 V output電壓提升，400V輸入電壓可690V輸出電壓Q power

23、compensation無功補償Advanced control principleAdvanced control principle -1.5-1-0.500.511.5-1.5-0.50.51.5flux-1500-1000-500050010001500-1500-1000-500050010001500IFlux circleVoltage frameCurrent circle-800-600-400-2000200400600800-8000800I/O-ConnectionsI/O-ConnectionsDI1-Ack. of converter fanDI1-Ack. of

24、converter fan 整流模塊風機確認信號整流模塊風機確認信號DI2-ON/OFF ControlDI2-ON/OFF Control 啟動啟動/ /停止停止DI3-Ack. of main ContactorDI3-Ack. of main Contactor 主接觸器確認信號主接觸器確認信號DI4-Earth faultDI4-Earth fault 接地故障接地故障DI5-Aux. voltage faultDI5-Aux. voltage fault 輔助電壓故障輔助電壓故障DI6-Reset DI6-Reset 復位復位DO1-Charging contactor ctrlDO

25、1-Charging contactor ctrl 充電接觸器控制充電接觸器控制DO2-Fault indicationDO2-Fault indication 故障指示故障指示DO3-Main contactor controlDO3-Main contactor control 主接觸器控制主接觸器控制默認默認I/OI/O連接連接I/O control Starting Sequence 1I/O control Starting Sequence 1I/O I/O 控制啟動時序控制啟動時序 1 1啟動按鈕啟動按鈕DI2DI2接收到接收到啟動信號啟動信號2.52.5秒秒RO3RO3主接觸主

26、接觸器閉合器閉合 風機風機DI3DI3主接觸器確認主接觸器確認DI1DI1風機確認風機確認IGBTIGBT開始調制開始調制斷開充電接觸器斷開充電接觸器I/O control Starting Sequence 2I/O control Starting Sequence 2I/O I/O 控制啟動時序控制啟動時序 2 2 ON: DI2 START:DI7 ON: DI2 START:DI7 ISU Signals and Parameters ISU Signals and Parameters 信號和參數(shù)信號和參數(shù) - frequency, current etc. 頻率,電流等 - so

27、ftware versions and converter data 軟件版本和整流器數(shù)據(jù) - bit three (B3) is used to start the converter 第三位啟動整流器 - ready, tripped etc. 就緒,故障等 - overcurrent, overvoltage etc. 過流過壓等 - Group 99 (start-up data) is the latest group Main Control Word Main Control Word 主控制字主控制字 MAIN CONTROL WORD (MCW)MAIN CONTROL WO

28、RD (MCW)7.017.01BitBitNameNameValueValueFunctionFunctionB0ONB1-B2B3B4-B6B7B8B9B10B11-B15101101100010Command to “RDY_RUNRDY_RUN”- stateCommand to “OFFOFF”- stateNot usedRUNNot usedRESETNot usedNot usedREMOTE_CMDNot usedCommand to “RDY_REFRDY_REF”- statesStop by coastingFault resetting with a positive

29、 edge 0Overriding computer is requested to control the converterOnly OFF OFF commands are valid Main Status Word Main Status Word 主狀態(tài)字主狀態(tài)字 Fieldbus Control Start Sequence stepA1Fieldbus Control Start Sequence stepA1現(xiàn)場總線控制的啟動時序圖第一步現(xiàn)場總線控制的啟動時序圖第一步1 1a rising edge of Main Control Word (MCW) bit 0 and a

30、nd simultaneous high level of digital input DI2 (i.e. the operating switch on cabinet door turned first to position START and thereafter left to position 1)主控制字第0位上升沿并且同時DI2保持高電平(柜門的操作三位開關先撥到START位置,然后保持在位置1.)Fieldbus Control Start Sequence StepFieldbus Control Start Sequence StepA 2A 2現(xiàn)場總線控制的啟動時序圖第

31、一步現(xiàn)場總線控制的啟動時序圖第一步 2 2a rising edge of digital input DI2 (i.e. the operating switch on cabinet door turned first to position START and thereafter left to position 1) and and simultaneous high level of Main Control Word (MCW) bit 0DI2上升沿 (柜門的操作三位開關先撥到START位置,然后保持在位置1.)并且同時主控制字第0位置1.Fieldbus Control St

32、art Sequence StepFieldbus Control Start Sequence StepB B現(xiàn)場總線控制的啟動時序圖第二步現(xiàn)場總線控制的啟動時序圖第二步 調制調制The modulator is started by high level of Main Control Word (MCW) bit 3, andstopped by low level of bit 3. The modulator can be started only after the charging of the DC bus is completed.主控制字第3位可以激活(1)/停止(0).只

33、有在直流母線充電完成后調制器才可以開始調制.Stop ISU ISU Stop ISU ISU 的停止的停止stop signal from the three-position operating switch on the cabinet door stops the modulator and opens the main contactor柜門上的三位操作開關的停止信號能停止調制器，分斷主接觸器 只有柜門上的開關可以分斷主接觸器The modulator can also be stopped from the Stop ( ) key on the control panel and

34、 from DriveWindow in local mode, and from an external control system in remote mode. These functions do not open themain contactor, but the line-side converter only shifts to the 6-pulse diode bridge mode (no regenerative braking is allowed/possible).調制器也能在本地控制模式下，通過控制盤上的Stop ( ) 鍵或DriveWindow軟件，以及在

35、遠程控制模式下的外部控制系統(tǒng)來停止。這些功能不能分斷主接觸器，但是進線側整流器能切換到 6 脈波二極管橋模式下 ( 不允許/ 不可能在再生制動模式下)DC Voltage REF DC Voltage REF 直流母線電壓給定值直流母線電壓給定值11.01 DC REF Select ( re-power) 直流電壓給定源23.01/AI/FB23.01 DC Volt REF 2.07 直流母線電壓給定值1) (65%.120%) sqrt(2) par. 4.04 CONV NOM VOLTAGE注意： 程序限制了 sqrt(2) UAC 的最小值，這里， UAC 是指實際的供電電壓。1)

36、 (approximately 65%.110%) sqrt(2) par. 4.04 CONV NOM VOLTAGENote: Note: The program limits the minimum value to sqrt(2) UAC,Reactive Power REF Reactive Power REF 無功功率給定值無功功率給定值11.02 Q REF Select 無功功率給定源 24.01/24.02/AI24.01 Q power REF (%PN) 無功功率給定值 (%PN) Positive value denotes capacitive load. 正值為容性

37、負載Negative value denotes inductive load. 負值為感性負載24.02 Q power REF2 單位由24.03設置的Q 給定值24.03 Q power REF2 Select24.04 Q power REF Add (kVar) 疊加在 Q power REF2Reactive Power REF Reactive Power REF 無功功率給定值無功功率給定值I/O setting I/O setting 基本基本I/OI/O設置設置Group13 Analogue Input 1-3 模擬輸入Group14 Digital Output DO2

38、 DO2 設置Group15 Analogue Output 1-3 模擬輸出Group18 LED Panel Control NLMD-01 NLMD-01 LEDLED顯示面板的顯示面板的控制控制LED PanelOutput （109）Scaled Panel （100）RDYRUNFLT050100150System Control Inputs System Control Inputs 系統(tǒng)控制輸入系統(tǒng)控制輸入16.01 RUN BIT Select (DI2/DI7) 運行信號給定16.02 Parameter Lock/ 16.03 Pass Code/ 16.06 Para

39、meter Backup16.08 Fan SPD control Mode (Const 50Hz/ Run Stop/ Controlled) 風機速度控制方式16.10 INT Config User (012) number of parallel connected converters 并聯(lián)連接運行的整流器的個數(shù)16.14 Power Sign Change 功率符號設置positive = power flow from supply network to intermediate circuit 從電網(wǎng)流向直流母線為正negative = power flow from int

40、ermediate circuit to supply network) 從直流母線流向電網(wǎng)為負16.15 I/O Start Mode (DI2 level/DI2 edge)21 Start / Stop 21 Start / Stop 起動起動/ /停止停止21.01 DC Level Start (No) 使用直流電壓激活IGBT功能21.02 DC Voltage Level 激活IGBT的直流電壓值,直流 電壓高于此值時,IGBT工作21.03 Stop Level Time 正向功率達到設定值后IGBT 停止工作的延遲時間 21.04 Stop Level Power IGBT停

41、止工作的正向(整流)功 率值21 Start / Stop 21 Start / Stop 起動起動/ /停止停止DC-level Start / Stop DC-level Start / Stop 直流電壓起動直流電壓起動/ /停止停止DCDC -start level highP-P0DC-stop level powerDC-stop level timeLC Running30 Fault Functions 30 Fault Functions 可編程故障保護功能可編程故障保護功能*30.01 Panel Comm Loss 控制盤通訊丟失30.02 Earth Fault 接地故

42、障或電流不平衡In parellel connection forced to FAULT, and display CUR NBAL . 多個模塊并聯(lián)時強置為FAULT，顯示CUR UNBAL . 30.03 Earth Fault Level（8/18% PW) 接地故障等級30.04 EXT Earth Fault 外部接地故障輸入口DI4 設置30.05 EXT Event 外部事件輸入口DI5設置30.11 DC OVERVOLT TRIP 直流過壓故障427 VDC for 240 V units, 740 VDC for 415 V units, 891 VDC for 500

43、V units, 1230 VDC for 690 V units30.12 DC UNDERVOLT TRIP 直流欠壓故障170 VDC for 240 V units, 293 VDC for 415 V units, 354 VDC for 500 V units, 488 VDC for 690 V units.31 Automatic Reset 31 Automatic Reset 自動復位自動復位31.01 Number of Trials(0) 31.01 Number of Trials(0) 自動復位次數(shù)自動復位次數(shù)31.02 Trial Time (30 s) 31.0

44、2 Trial Time (30 s) 自動復位時間間隔自動復位時間間隔31.03 Delay Time (0) 31.03 Delay Time (0) 故障后復位的延時故障后復位的延時31.04 Overcurrent (No) 31.04 Overcurrent (No) 過流自動復位過流自動復位31.05 Overvoltage (No) 31.05 Overvoltage (No) 過壓自動復位過壓自動復位31.06 Undervoltage (No) 31.06 Undervoltage (No) 欠壓自動復位欠壓自動復位If the start command is select

45、ed and it is ON, the converter may If the start command is selected and it is ON, the converter may restart immediately after automatic fault reset. restart immediately after automatic fault reset. 如果有啟動信號，自動如果有啟動信號，自動復位后整流立即啟動復位后整流立即啟動Do not use these parameters when the drive is connected to a Do

46、not use these parameters when the drive is connected to a common DC bus. The charging resistors may be damaged in an common DC bus. The charging resistors may be damaged in an automatic reset. automatic reset. 公共母線系統(tǒng)不應使用自動復位功能公共母線系統(tǒng)不應使用自動復位功能Communication Communication 現(xiàn)場總線通訊現(xiàn)場總線通訊98.01 COMMAND SEL

47、(MSW|I/O) 98.01 COMMAND SEL (MSW|I/O) 控制命令選擇控制命令選擇98.02 COMM. Module (NO /Fieldbus /ADVANT-N-FB 98.02 COMM. Module (NO /Fieldbus /ADVANT-N-FB /STD Modbus /Inverter) /STD Modbus /Inverter) 通訊適配器選擇通訊適配器選擇Group51 Master Adapter Group51 Master Adapter Group52 Standard ModbusGroup52 Standard ModbusGroup7

48、1 DriveBus COMGroup71 DriveBus COMGroup90 Data Set Receive Addresses Group90 Data Set Receive Addresses (ADVANT/N-FB)(ADVANT/N-FB)Group91 Data Set Receive AddressesGroup91 Data Set Receive AddressesGroup92 Data Set Transmit AddressesGroup92 Data Set Transmit AddressesGroup93 Data Set Transmit Addres

49、sesGroup93 Data Set Transmit AddressesGroup19 Data StorageGroup19 Data Storage70 DDCS Control DDCS70 DDCS Control DDCS通訊設置通訊設置70.01 CH0 Node Address CH070.01 CH0 Node Address CH0節(jié)點地址節(jié)點地址 連接連接N-FB N-FB 或或 DriveBusDriveBus70.02 CH0 Link Control CH070.02 CH0 Link Control CH0光強光強70.03 CH0 Baud Rate CH07

50、0.03 CH0 Baud Rate CH0波特率波特率70.04 CH0 Timeout CH070.04 CH0 Timeout CH0通訊故障延遲時間通訊故障延遲時間70.05 CH0 Comm Loss Ctrl CH070.05 CH0 Comm Loss Ctrl CH0通訊丟失控制通訊丟失控制70.19 CH0 HW Connection CH070.19 CH0 HW Connection CH0拓撲拓撲 star/ringstar/ring70.15 CH3 Node Address70.15 CH3 Node Address70.16 CH3 Link Control70.16 CH3 Link Contro