全新原裝西門子RS485 電阻器
SIEMENS上海勵輝自動化科技有限公司
聯(lián)系人 :向道高( 銷售經理 )
電話(Tel):021-61531018
傳真(Fax):021-33737848
商務( Q Q ):2880585011
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地址(Add):上海市松江區(qū)文誠路2188弄151號
6ES7972-0DA00-0AA0
有源 RS 485 端接電阻用來終接總線段。電源與站無關。終端電阻是單獨由其它I/O部件持久地供電或用上游I/O引出的電壓。在終接總線系統(tǒng)時,可以有選擇地耦合和去耦合站(例如 ET 200S),而不會引起故障。
有源 RS 485 終端元件用于對 PROFIBUS 實施終接,從而確保 RS 485 信號的規(guī)定水平并抑制線路反射。由于是單獨運行,與現(xiàn)場設備無關,因此可以無反應地從總線中斷開。
Order number |
6ES7972-0DA00-0AA0 |
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SIMATIC S7, RS485 RESISTOR |
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Product type designation |
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Supply voltage |
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Rated value (DC) |
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Yes |
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permissible range, lower limit (DC) |
20.4 V |
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permissible range, upper limit (DC) |
28.8 V |
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Input current |
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Current consumption, typ. |
30 mA |
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Power losses |
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Power loss, max. |
0.72 W |
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Interfaces |
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Bus cables |
Screw terminal block |
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PROFIBUS DP |
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12 Mbit/s; 9.6 kbit/s to 12 Mbit/s |
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Degree and class of protection |
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Degree of protection to EN 60529 |
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Yes |
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Ambient conditions |
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Ambient temperature in operation |
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0 °C |
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60 °C |
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Ambient temperature during storage/transportation |
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-40 °C |
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70 °C |
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Relative humidity |
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95 %; at +25 °C |
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Connection b |
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Power supply |
Screw terminal block |
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Dimensions |
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Width |
60 mm |
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Height |
70 mm |
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Depth |
43 mm |
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Weights |
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Weight, approx. |
95 g |