西門子有源終端元件
SIEMENS上海勵(lì)輝自動(dòng)化科技有限公司
聯(lián)系人 :向道高( 銷售經(jīng)理 )
電話(Tel):021-61531018
傳真(Fax):021-33737848
商務(wù)( Q Q ):2880585011
24小時(shí)銷售技術(shù)服務(wù)熱線 :13701945634
郵箱(Email):xiangdaogao@li-h.com
地址(Add):上海市松江區(qū)文誠(chéng)路2188弄151號(hào)
有源 RS 485 端接電阻用來(lái)終接總線段。電源與站無(wú)關(guān)。終端電阻是單獨(dú)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(shí),可以有選擇地耦合和去耦合站(例如 ET 200S),而不會(huì)引起故障。
有源 RS 485 終端元件用于對(duì) PROFIBUS 實(shí)施終接,從而確保 RS 485 信號(hào)的規(guī)定水平并抑制線路反射。由于是單獨(dú)運(yùn)行,與現(xiàn)場(chǎng)設(shè)備無(wú)關(guān),因此可以無(wú)反應(yīng)地從總線中斷開。
Order number |
6ES7972-0DA00-0AA0 |
|
---|---|---|
SIMATIC S7, RS485 RESISTOR |
||
Product type designation |
||
Supply voltage |
||
Rated value (DC) |
||
|
Yes |
|
permissible range, lower limit (DC) |
20.4 V |
|
permissible range, upper limit (DC) |
28.8 V |
|
Input current |
||
Current consumption, typ. |
30 mA |
|
Power losses |
||
Power loss, max. |
0.72 W |
|
Interfaces |
||
Bus cables |
Screw terminal block |
|
PROFIBUS DP |
||
|
12 Mbit/s; 9.6 kbit/s to 12 Mbit/s |
|
Degree and class of protection |
||
Degree of protection to EN 60529 |
||
|
Yes |
|
Ambient conditions |
||
Ambient temperature in operation |
||
|
0 °C |
|
|
60 °C |
|
Ambient temperature during storage/transportation |
||
|
-40 °C |
|
|
70 °C |
|
Relative humidity |
||
|
95 %; at +25 °C |
|
Connection b |
||
Power supply |
Screw terminal block |
|
Dimensions |
||
Width |
60 mm |
|
Height |
70 mm |
|
Depth |
43 mm |
|
Weights |
||
Weight, approx. |
95 g |