A20B-2001-0931電路板
A20B-2001-0931電路板
A20B-2001-0931電路板
數字量信號連接應注意的問題
變頻器的輸入信號中包括對運行/ 停止、正轉/ 反轉、點動等運行狀態進
行操作的數字量輸入信號(開關型指令信號),這些信號常來自PLC 的數
字量輸出信號。PLC 通常利用其內部的繼電器接點(繼電器輸出型P L C
)或具有開關特性的元器件(晶體管輸出型PLC)與變頻器相連,得到運行
狀態指令,如圖1 和圖2 所示。在進行數字量信號的連接時應注意:
(1)使用繼電器輸出型P L C 與變頻器相連時,應注意接觸不良常帶來變
頻器誤動作,因此在實際接線中要注意連接可靠。
(2)使用晶體管輸出型P L C 與變頻器相連時,應注意晶體管本身的電壓
的高低、電流的大小等限制條件在其範圍內,保證係統的可靠性。
(3)設計變頻器的輸入信號電路時,應盡量避免採用繼電器等感性負載,
因繼電器開閉產生的浪涌電流可能引起變頻器的誤動作。
(4)當P L C 輸出的開關信號進入變頻器時,有時會發生外部電源和變頻
器控制電源之間的串擾,應注意對P L C和變頻器分開接地,避免兩者使用
共同的接地線。
A068-6110-H015 1
6ES7953-8LL20-0AA0 1
1769-OB16 8 面價3690
6SL3100-0BE21-6AB0 1
6SL3120-1TE21-0AD0 1
6AG4141-5AB17-0FA0 1
6FC5303-1AF10-8AA0 1
6FC5247-0AA43-1AA0 1
6FC5303-0AF14-0AA0 1
6GK5208-0BA00-2CA2 1
6GK5208-0BA00-2AC2
6GK5216-0BA00-2CA2 1
216-0BA00-2AC2
6ES7647-8BB31-7CA3 1
6ES7158-3AD10-0XA0 1
6ES7193-6AR00-0AA0 2
6ES7155-6AA01-0BN0 2
6ES7131-6BF00-0CA0 12
6ES7132-6BF00-0CA0 9
6ES7193-6BP00-0DA0 16
6ES7193-6BP00-0BA0 17
6ES7136-6BA00-0CA0 6
6ES7136-6DB00-0CA0 6
PSTX470-600-70 1
6FX8002-2CA31-1CF0 2
6FX8002-2CH00-1CE0 1
6FX8002-5CN26-1CC0 1
6FX8002-2DC30-1CF0 1
6FX8002-2CG00-1CA0 1
6FX8002-5DN36-1BF0 1
1489-M2D200 52個面價:1160
1489-M3D350 10個面價:1772
1489-M3D600 26個面價:2308
YOKOGAWA 3760-31-02/D/RS-232C/REM/AK-02/LMP 37603102DRS232CR
YASKAWA ELECTRIC USASEM-30AS2K USASEM30AS2K
YASKAWA ELECTRIC DDSCR-GL70H3 DDSCRGL70H3
YASKAWA ELECTRIC CIMR-SSA-4055 CIMRSSA4055
YASKAWA ELECTRIC CACR-PR03BC3ES CACRPR03BC3ES
WINSMITH A-44381X0GC A44381X0GC
WESTINGHOUSE S140D481G02 S140D481G02
WESTINGHOUSE DBL-25-1200 DBL251200
WESTINGHOUSE 2067A02G06 2067A02G06
TOTAL CONTROL PRODUCTS QPL-CGA-E0000 QPLCGAE0000
TOSHIBA VT130G2U5270 VT130G2U5270
TEXAS INSTRUMENTS PLC MON-4614-SM MON4614SM
TEXAS INSTRUMENTS PLC 560-2120W 5602120W
TEXAS INSTRUMENTS PLC 505-ATM-0440 505ATM0440
TELEMECANIQUE TSX-P87-425 TSXP87425
TB WOODS WF2C4075-0A WF2C40750A
TAYLOR ELECTRONICS 6214PZ00005A 6214PZ00005A
TAYLOR ELECTRONICS 6204BZ10100G 6204BZ10100G
TAYLOR ELECTRONICS 6202NZ10000C 6202NZ10000C
TAYLOR ELECTRONICS 6202NZ10000 6202NZ10000
SYMBOL TECHNOLOGIES VRC6940-00V651US VRC694000V651US
SYMBOL TECHNOLOGIES VRC6940 VRC6940
SYMAX 8881-MLI-224 8881MLI224
SYMAX 8030-ROM-871 8030ROM871
SYMAX 8020-SCP-631 8020SCP631
SYMAX 8010-SFW-473 8010SFW473
SYMAX 8010-SFW-472 8010SFW472
SQUARE D MHL3670035DC2351 MHL3670035DC2351
SQUARE D 8639NSA4SSPL1SPL2 8639NSA4SSPL1SPL
SIEMENS 6SE9-523-7DH40 6SE95237DH40
SIEMENS 6SE7643-7HC33-3KX0 6SE76437HC333KX0
SIEMENS 6SE7-031-8TF50-1AA0 6SE70318TF501AA0
SIEMENS 6SE7023-8TP50-Z 6SE70238TP50Z
SIEMENS 6FC5357-0BB34-0AE1 6FC53570BB340AE1
SIEMENS 6ES7-650-0BA13-0BX0 6ES76500BA130BX0
SIEMENS 6ES7650-0BA10-0BX0 6ES76500BA100BX0
SIEMENS 6ES5-943-7UB21 6ES59437UB21
SIEMENS 6ES5-943-7UB21 6ES59437UB21
SIEMENS 6DS1-220-8AA 6DS12208AA
SIEMENS 6AV3-627-1JK00-0AX0 6AV36271JK000AX0
SIEMENS 1PH4168-4NF26 1PH41684NF26
ROBO CYLINDER ISPA-MZM-A-200-10-200-T1-AQ-B ISPAMZMA20010200
REXROTH 1-070-083-221-304 1070083221304
RELIANCE ELECTRIC UVZ3475 UVZ3475
RELIANCE ELECTRIC S-D4006-C SD4006C
RELIANCE ELECTRIC S6R-9006 S6R9006
RELIANCE ELECTRIC 86466-60T 8646660T
RELIANCE ELECTRIC 8371324BTP 8371324BTP
RELIANCE ELECTRIC 45C-313A 45C313A
RELIANCE ELECTRIC 45C-231 45C231
RELIANCE ELECTRIC 3RA2015 3RA2015
RELIANCE ELECTRIC 30V4260 30V4260
RELIANCE ELECTRIC 24C4140U 24C4140U
RELIANCE ELECTRIC 0-5285-0 052850
POWERTEC INDUSTRIAL MOTORS INC M6HLEN-00090-00 M6HLEN0009000
PARVEX MC19PA7326 MC19PA7326