PROFIBUS - DP/FMS ¼³Ä¡µµ¿ò¸»
º» ³»¿ëÀº PROFIBUS-DP¿Í PROFIBUS-FMS network ¼³Ä¡¿¡ µû¸¥ °£·«ÇÑ
µµ¿ò¸»·Î½á PROFIBUS ¾È³»¼ÀÎ "Installation Guideline for
PROFIBUS-DP/FMS" (ÁÖ¹®¹øÈ£ 2.112 - ȸ¿øÇýÅöõ ÂüÁ¶)¿¡ »ó¼¼È÷
¼³¸íµÇ¾î ÀÖ½À´Ï´Ù.
PROFIBUS-PA´Â IEC 1158-2 Ç¥ÁØÀÌ Àû¿ëµÇ´Â °ü°è·Î ¿©±â¼ ¼³¸íÇϴ°Ͱú´Â
¼³Ä¡¹æ¹ýÀÌ ´Ù¸£±â ¶§¹®¿¡ º» ³»¿ëÀº PROFIBUS-PA¿¡ ÀûÇÕÇÏÁö ¾Ê½À´Ï´Ù.
1. ¼Ò °³
2. PROFIBUS ¼³Ä¡¹æ¹ý
3. PROFIBUS ÄÉÀÌºí ¼³Ä¡¹æ¹ý
4. Ãß°¡³»¿ë
5.
PROFIBUS
Cabling Guide - pdfÈÀÏ
1.
¼Ò°³
º» ³»¿ëÀº PROFIBUS-DP¿Í PROFIBUS-FMS system¸¦
¿Ã¹Ù¸¥ ¼³Ä¡¸¦ µ½±â À§ÇÑ ³»¿ëÀ¸·Î½á µð¹ÙÀ̽ºº°·Î Á¦°øµÇ´Â °¢
Á¦ÀÛ»çÀÇ °ü·Ã ¾È³»¼µµ Âü°íÇÏ¸é¼ ¼³Ä¡¸¦ ÇؾßÇÔ. ¶ÇÇÑ º» ³»¿ëÀº
safe system°ú °°ÀºPROFIBUS-PA¿¡´Â Àû¿ëÇÒ ¼ö ¾ø°í ´ë½Å Æø¹ßÀ§ÇèÁö¿ª
¼³Ä¡±âÁؼ¸¦ Àû¿ëÇÕ´Ï´Ù.
±¤´ë¿ªÀ¸·Î »ç¿ëµÇ´Â ¿ø°Å¸® Àü¼Û¿¡´Â ±¤ÄÉÀ̺íÀÇ »ç¿ëÀ»
±ÇÀåÇÕ´Ï´Ù.
´ÙÀ½ÀÇ ¼³Ä¡³»¿ëÀº À¯·´Ç¥ÁØÀÎ EN 50170¿¡ ¸í½ÃµÇ¾î ÀÖ´Â µ¿ÄÉÀ̺íÀ»
ÀÌ¿ëÇÑ RS-485 Àü¼Û¿¡¸¸ Àû¿ëÇØ¾ß ÇÏ°í ´õºÒ¾î¼ PROFIBUS ¿î¿µÀÚ´Â
°¡´ÉÇÑ PNO·Î ºÎÅÍ °ø½ÄÀÎÁõÀ» ¹ÞÀº Çʵå¹ö½º µð¹ÙÀ̽º¿Í
°ü·ÃÁ¦Ç°¸¸À» »ç¿ëÇϱ⠹ٶø´Ï´Ù. °ø½ÄÀÎÁõÀ» ¹ÞÀº Á¦Ç°µéÀº ¸¹Àº
½ÃÇèÀ» °ÅÃƱ⿡ ±× ½Å·Ú¼ºÀ» º¸Àå¹ÞÀ» ¼ö ÀÖ½À´Ï´Ù. PROFIBUS Data´Â
RS-485 Ç¥ÁØÀ¸·Î Àü¼ÛµË´Ï´Ù. PROFIBUS-DP/FMSÀÇ »ç¿ë Ư¡µéÀº EN 50170°ú
ÀÌÈÄ ¼³¸íµÇ´Â ³»¿ë¿¡¼ ¾Ë ¼ö ÀÖ½À´Ï´Ù. ±¤ÄÉÀÌºí »ç¿ë½Ã
À¯ÀÇÁ¡µµ °£´ÜÈ÷ ¼³¸íÇÕ´Ï´Ù.
2. PROFIBUS ¼³Ä¡¹æ¹ý
2.1 ÀϹݻçÇ×
Ç¥ 2-1Àº PROFIBUS ¼³Ä¡¹üÀ§¿¡ µû¸¥ ÀϹݻçÇ×À» Áß¿ä
Ư¡¿ä¼ÒµéÀ» º¸¿©ÁÖ°í ÀÖ½À´Ï´Ù. PROFIBUS RS-485 »ç¾ç¿¡¼ °¢ Bus Segment´ç
¿¬°áÇÒ ¼ö ÀÖ´Â µð¹ÙÀ̽º´Â ÃÖ´ë 32°³·Î½á ¸¹Àº ¼öÀÇ PROFIBUS DP/FMS
stationÀ» ¿¬°áÇϱâ À§Çؼ´Â Segment°¡ ÇʼöÀû ÀÔ´Ï´Ù. Segment´Â
µ¥ÀÌÅͽÅÈ£¸¦ ÁõÆø ¶Ç´Â º¹±¸½ÃÅ°´Â ¿ªÇÒÀ» ÇÏ´Â Repeater¿Í ¿¬°áµÇ¾î
ÀÖ°í Repeater´Â Bus segment ¶Ç´Â Bus sectionÀÇ galvanic isolation¿¡ »ç¿ëµË´Ï´Ù.
ÃÖ´ë station¼ö
- DP´Â 126°³(¾îµå·¹½º´Â 0 ¹øºÎÅÍ 125¹ø±îÁö ÇÒ´ç)ÀÌ°í FMS´Â
127°³(¾îµå·¹½º´Â 0 ¹øºÎÅÍ 126¹ø±îÁö)
Repeater°¡ ÀÖ´Â Segment´ç ÃÖ´ë StationÀÇ
¼ö
- 32°³
µ¥ÀÌÅÍ Àü¼Û¼Óµµ(kbit/s)
- 9.6/19.2/45.45/93.75/187.5/500/1,500/3,000/6,000/12,000 kBit/s
¿¬°áµÇ´Â SegmentÀÇ ÃÖ´ë¼ö
- EN 50170 Ç¥ÁØ¿¡ ÀÇ°ÅÇÏ¸é µÎ°³ÀÇ Station°£¿¡´Â ÃÖ´ë 4°³ÀÇ
Repeater°¡ ¼³Ä¡µÉ ¼ö ÀÖÁö¸¸ RepeaterÀÇ ÇüÅÂ¿Í Á¦Àۻ翡 µû¶ó 4°³ÀÌ»óµµ
°¡´ÉÇÏ´Ï Á¦Àۻ翡¼ Á¦°øµÇ´Â ±â¼úÁöħ¼¸¦ Âü°í ¹Ù¶ø´Ï´Ù.
Ç¥ 2-1: PROFIBUS ¼³Ä¡±âÁØ
±×¸² 2-1 Repeater¸¦ »ç¿ëÇÑ PROFIBUS ¼³Ä¡»ç·Ê(Repeater´Â
galvanic isolation »ç¿ë)
2.2 PROFIBUS Layer 1(Physical Layer)
PROFIBUS layer 1Àº µ¥ÀÌÅÍ Àü¼Û±â¼ú ³»¿ëÀ¸·Î½á Bus Ä¿³ØÅÍÀÇ pin
¹è¿ ¹× Àû¿ëµÇ´Â ±â¼úÀû parameter¸¦ ¼³¸íÇÑ ³»¿ëÀ¸·Î½á
PROFIBUS-DP/FMS deviceÀÇ ¼³°è±ÔÄ¢À» Æ÷ÇÔÇÏ°í ÀÖ½À´Ï´Ù.
2.2.1 PROFIBUS data Àü¼Û cable ¼±ÅÃ
Àû¿ëÇöÀå¿¡ µû¶ó »ç¿ëÀÚ´Â ÀϹÝÀûÀÎ Àü±âÀû Àü¼Û¹æ¹ý°ú
±¤Àü¼Û¹æ¹ýÁß¿¡ ¼±ÅÃÇÒ ¼ö Àִµ¥ ´ÙÀ½ÀÇ °æ¿ì´Â Àü±âÀûÀÎ
Àü¼Û¹æ¹ýÀ» ¼±ÅÃÇÑ °æ¿ìÀÔ´Ï´Ù.
Ç¥ÁØ bus cable
halogen-free ¿ÜÇǼÒÀç·Î ¸¸µç Ç¥ÁØ
bus cable(type FRNC)
½ÄÇ°°ú ÀǾàÇ° °øÁ¤¿¡ »ç¿ëµÇ±â
À§Çؼ PE ¿ÜÇǼÒÀç·Î ¸¸µç Cable (Ç¥ÁØ Cable°ú´Â ´Ù¸¥Á¡Àº ÄÉÀ̺í
¿ÜÇÇÀÓ)
ÁöÇÏ¿¡ ¹¯±âÀ§ÇÏ¿© ¿ÜÇÇ°¡
Æ°Æ°ÇÏ°Ô µÇ¾îÀÖ´Â cable.
Trailing cable(ÀÌ°ÍÀº
Ư¼öÄÉÀ̺í·Î½á °è¼ÓÇÏ¿© ¿òÁ÷ÀÌ°í ÀÖ´Â ±â°èºÎºÐ¿¡ »ç¿ëµÊ)
Festooned cable(trailing cable°ú °°Áö¸¸
strain relief element°¡ ºÎÂøµÇ¾î Àִ°ÍÀÌ ´Ù¸§)
bus cableÀº EN 50170 part 8-2¿¡ "Cable Type A"·Î ±ÔÁ¤µÇ¾î ÀÖ°í ´ÙÀ½
Ç¥ 2-2¿Í °°Àº Ư¼ºÀ» °¡Áö°í ÀÖ½À´Ï´Ù. EN 50170¿¡ ¼³¸íµÇ¾î ÀÖ´Â Cable
Type BÀº Áö±ÝÀº »ç¿ëµÇ°í ÀÖÁö ¾Ê½À´Ï´Ù.
Ç¥ 2-2 A Type Ç¥ÁØÄÉÀ̺í Ư¼º
*) cable cross-sectionÀº Bus ÀÎÅÍÆäÀ̽º Ä¿³ØÅÍÀÇ ±â°èÀû »ç¾ç°ú
ÀÏÄ¡ÇÔ
A Type ÄÉÀ̺íÀ» »ç¿ë½Ã °¢ Segment°£ÀÇ ÃÖ´ë±æÀÌ´ç µ¥ÀÌÅÍ Àü¼Û¼Óµµ´Â
´ÙÀ½Ç¥¸¦ ÂüÁ¶ ¹Ù¶ø´Ï´Ù.
À¯ÀÇÁ¡ : PROFIBUS-DP/FMS ¼³Ä¡½Ã »ç¿ëÀÚ´Â ¹Ýµå½Ã Bus¿¡ ¿¬°áµÇ¾î
ÀÖ´Â ¸ðµç µð¹ÙÀ̽ºÀÇ Àü¼Û¼Óµµ¸¦ À§Ç¥¸¦ ±âÁØÇÏ¿© ¼±ÅÃÇؾß
ÇÕ´Ï´Ù.
µÎ°³ÀÇ Bus station°£¿¡ ÃÖ´ë·Î Çã¿ëµÇ´Â °Å¸®ÀÇ»êÃâ¹æ½ÄÀº ´ÙÀ½°ú
°°½À´Ï´Ù.
(NO_REP + 1) * Segment ±æÀÌ
NO_REP = ¿¬¼ÓµÇ¾î ¿¬°áµÇ´Â RepeaterÀÇ ÃÖ´ë°¹¼ö(repeater type¿¡
µû¶ó ´Ù¸§).
¿¹ : Repeater Á¦ÀÛ»ç »ç¾ç¿¡ 9°³ÀÇ Repeater¸¦ °è¼ÓÇÏ¿© ¿¬°áÇÒ ¼ö
ÀÖ´Ù°í µÇ¾î ÀÖ°í µ¥ÀÌÅÍ Àü¼Û¼Óµµ°¡ 1,500 kbit/sÀÇ °æ¿ì µÎ°³ÀÇ Bus station°£¿¡
ÃÖ´ë·Î Çã¿ëµÇ´Â °Å¸®´Â ´ÙÀ½°ú °°½À´Ï´Ù.
(9 + 1) * 200 m = 2000 m
2.2.2 Bus stub line
Passive bus stub lineÀ» »ç¿ëÇÏ´Â °æ¿ì´Â »ý·«ÇÏ°í ¼³¸íÇÕ´Ï´Ù.
Bus¿¡ ¿¬°áµÈ Programming°ú diagnostic device´Â bus tap-off cable°ú °°ÀÌ
µ¿ÀÛÇÏ´Â ÀÚ½ÅÀÇ ÄÉÀ̺íÀ» »ç¿ëÇÏ¿© ¿¬°áµÇ´Âµ¥ ÀÌ·¯ÇÑ °æ¿ì¿¡
»ç¿ëÀÚ´Â bus tap-off device¸¦ »ç¿ëÇÒ ¼ö ÀÖ½À´Ï´Ù.(bus terminals, repeaters,
active cables µî)
±×¸² 2-2 : Connecting a diagnostic device to the bus using an active bus
terminal/repeater
2.2.3 Bus termination(EN 50170 Volume 2)
µ¥ÀÌÅÍ ¶óÀο¡¼ Noise¿Í ¿©·¯ °£¼·Çö»óÀ» ÃÖ¼ÒÈÇϱâ
À§Çؼ´Â µ¥ÀÌÅÍ ÄÉÀÌºí ¾ç´ÜÀ» ±×¸² 2-3°ú °°ÀÌ Terminating Resister¸¦
»ç¿ëÇÏ¿© ¹Ýµå½Ã TerminateÇØ¾ß ÇÕ´Ï´Ù.
±×¸² 2-3 : EN 50170¿¡ ÀÇ°ÅÇÑ PROFIBUS Cable
termination(9-pin SUB-D connector)
2.2.4 Bus connector¿Í PROFIBUS-DP/FMS interface
Bus connector´Â Bus CableÀ» PROFIBUS device¿¡ ¿¬°áÇϴµ¥ »ç¿ëµË´Ï´Ù. Bus
connector´Â ¿©·¯°¡ÁöÀÇ º¸È£µî±Þ°ú mechanical design¿¡ µû¶ó¼ ±¸ºÐµÇ°í
Ä¿³ØÅÍ´Â PROFIBUS µð¹ÙÀ̽º¿¡ µû¶ó °áÁ¤µË´Ï´Ù.(PC interface, PLC ¶Ç´Â
Ư¼öÇÑ fieldbus deviceµî).
EN 50170 Volume 2¿¡¼´Â 9-pin Sub-D connector »ç¿ëÀ» ±ÇÀåÇÏ°í ÀÖ½À´Ï´Ù.
Ç¥ 2-4 9-pin Sub-D connector¸¦ »ç¿ë½Ã pin assignment
Pin no. |
Signal |
¿ë µµ |
1 |
Shield |
Shield/functional ground |
2 |
M24 |
Ground for +24 V output voltage |
3 |
RxD/TxD-P *) |
Receive/Transmit data plus (B wire) |
4 |
CNTR-P |
Repeater control signal (direction control), RTS signal |
5 |
DGND *) |
Data ground (reference potential for VP) |
6 |
VP *) |
Supply voltage - plus (P5V) |
7 |
P24 |
Output voltage +24 V |
8 |
RxD/TxD-N *) |
Receive/Transmit data minus (A wire) |
9 |
CNTR-N |
Repeater control signal (direction control) |
*) Ç¥½Ã´Â Àǹ«ÀûÀ¸·Î Á¦°øµÇ´Â ½ÅÈ£
¸ðµç Çʵå¹ö½º µð¹ÙÀ̽º¿¡ »ç¿ëµÇ´Â Ç¥ÁØ 9-pin Sub-D connector´Â
ÀÔÃâ·Â½ÅÈ£¿Í ÇÔ²² VP¿Í DGND ½ÅÈ£¸¦ Á¦°øµÇÁö¸¸ ÀÌ¿Ü ´Ù¸¥Á¾·ùÀÇ
Ä¿³ØÅ͵éÀº ÀÔÃâ·Â½ÅÈ£¸¸ °¡´ÉÇÏ°Ô µÇ¾î ÀÖÀ¸´Ï Àü¼Û¼Óµµ¿¡ ¾Ë¸Â´Â
Ä¿³ØÅ͸¦ »ç¿ëÇØ¾ß ÇÕ´Ï´Ù. ¸¸¾à ÀÓÀÇÀÇ Æ¯Á¤½ÅÈ£°¡ ±³È¯µÈ´Ù¸é
¹Ýµå½Ã EN 50170 Volume 2 Ç¥ÁØ°ú ºñ±³ÇÏ¿© ºÎÇյǾî¾ß ÇÏ°í ¿¹¿Ü»çÇ×À»
GSD ÆÄÀÏ¿¡ ¸í½ÃÇÏ¿©¾ß ÇÕ´Ï´Ù.
µð¹ÙÀ̽º¿¡¼ ³ª¿À´Â EMC(ElectroMagnetic Compatibility) ÀÇ ¿µÇâÀ»
¹æÁöÇÏ·Á¸é Cable shield¿Í µð¹ÙÀ̽º Á¢Áö°¡ ¿¬°áµÇ¾î¾ß Çϴµ¥(ÀϹÝÀûÀ¸·Î
Àüµµ¼ºÀÌ ÀÖ´Â ÄÉÀ̽º) Sub-D connectorÀÇ ±Ý¼ÓÄÉÀ̽º¿Í Cable shield¸¦
¿¬°áÇÏ¸é µË´Ï´Ù. Bus connector´Â low-impedance·Î ÄÉÀ̺í Shield¿Í
¿¬°áµË´Ï´Ù. shielded twisted pair data cableÀ» »ç¿ëÇÏ´Â serial bus systemÀÇ
data Àü¼Û±â¼úÀº interference-immune RS 485 interface Ç¥ÁØ¿¡ ±â¼úµÇ¾î
ÀÖ½À´Ï´Ù. Bus TerminationÀ» Á¤È®ÇÏ°Ô ÇϱâÀ§ÇØ °¢ StationÀº Ä¿³ØÅÍÇÉ 5,6¹ø¿¡
DGND¿Í VP(5V) ½ÅÈ£°¡ ¹Ýµå½Ã ¿¬°áµÇ¾î¾ß ÇÕ´Ï´Ù. terminating resistors (VP)¿¡
°ø±ÞµÇ´Â 5V´Â 10mAÀÇ ÃÖ¼ÒÀü·ù¸¦ °®°íÀÖ°í(¸¸¾à NULL °ªÀÌ ¹ö½º¸¦
ÅëÇØ º¸³»Áö¸é Àü·ù°ªÀº 12mA·Î Áß°¡ÇÑ´Ù) ¸¸¾à ¹ö½º Å͹̳¯°ú
±¤ÄÉÀÌºí µå¶óÀ̹ö°°Àº ´Ù¸¥ Á¾·ùÀÇ µð¹ÙÀ̽º°¡ ÀÖ´Ù¸é current ratingÀº
app.90mA±îÁö Áõ°¡ÇÕ´Ï´Ù.
½ºÅ×À̼ÇÀÇ Àü±âÀû ¿ë·®°ú ÄÉÀÌºí¿µÇâÀ» °í·ÁÇÑ ´ÙÀ½ ±×¸² 2-5¿Í
°°Àº °ÍÀÌ ÀÖ½À´Ï´Ù.
±×¸² 2-5 : Bus Ä¿³ØÅÍ¿Í ÇÔ²² ¿ÏÁ¦Ç°À¸·Î ³ª¿Â terminating
resistors¿Í series inductors
2.2.5 Terminating resistor¿ë Power supply
µ¿ÀÛÁßÀÎ Bus TerminationÀº µ¥ÀÌÅÍ Àü¼ÛÁß ½ÅÈ£¹ÝÇâÀ» Â÷´ÜÇÏ´Â
resistor¸¦ »ç¿ëÇÏ°í, ¹ö½º»ó¿¡¼ µ¿ÀÛÇÏ´Â StationÀÌ ÀüÇô ¾øÀ»¶§´Â
Àü¾ÐÀÌ ¾ø´Ù´Â ½ÅÈ£·Î zero-signalÀ» µ¥ÀÌÅÍ ¶óÀο¡ º¸³»ÁÝ´Ï´Ù.
À̶§µµ °¢°¢ÀÇ RS-485 SegmentÀÇ ¾ç´ÜÀº ¹Ýµå½Ã Terminate µÇ¾î¾ß ÇÕ´Ï´Ù.
¸¸¾à TerminationÀÌ ¾ÈµÇ¾î ÀÖÀ¸¸é µ¥ÀÌÅÍ Àü¼Û¿¡·¯°¡ ¹ß»ýÇÏ°Ô µÇ´Âµ¥
³Ê¹« ¸¹Àº Terminationµµ Á¤»óÀûÀÎ µ¥ÀÌÅÍ Àü¼ÛÀ» ¹æÇØÇÏ´Â ¿äÀÎÀÌ µÉ
¼ö ÀÖ½À´Ï´Ù. °£È¤ Bus Segment°¡ ÃÖ´ë Station¼ö, ÃÖ´ë±æÀÌ,
ÃÖ´ë¼Óµµµî¿¡ ±ÙÁ¢ÇÏ¿© µ¿ÀÛÇÏ°Ô µÇ¸é ¿¡·¯°¡ ¹ß»ýÇÏ´Â °æ¿ìµµ
ÀÖ½À´Ï´Ù.
Bus Terminatin¿¡ ÇÊ¿äÇÑ Àü¿øÀº °¢ StationÀ¸·Î Àü´ÞµÇ´Â ¹ö½º¸¦ ÅëÇÏ¿©
Àü´ÞµË´Ï´Ù.¹ö½º µ¿ÀÛ¿¡ ÇÊ¿äÇÑ Power´Â Ç×»ó ¿µ±¸ÀûÀ¸·Î °ø±ÞµÇ¾î¾ß
Çϱ⿡ Power°¡ ºÒ¾ÈÁ¤ÇÒ¶§¸¦ ´ëºñÇÏ¿© ´ë¾ÈÀ» °¡Áö°í ÀÖ¾î¾ß ÇÕ´Ï´Ù.
¿¹¸¦µé¾î Bus Termination¿¡ Power¸¦ °ø±ÞÇϱâ À§ÇÏ¿© ´Üµ¶ StationÀÇ
¼³Ä¡ÀÇ °æ¿ì¿¡´Â ¹Ýº¹µÇ´Â switch µ¿ÀÛÀÌ ÇÊ¿äÇÒÁö ¸ð¸£±â¿¡
Á¶ÀÛ»óÀÇ Æí¸®¼ºÀ» À§ÇÏ¿© Bus¿¡¼ ºÐ¸®½ÃÄÑ¾ß ÇÏ´Â °æ¿ìµîÀÔ´Ï´Ù.
´Ù¸¥ ¿¹·Î´Â Bus Termination¿¡ ¿ÜºÎ Power supply¸¦ Á÷Á¢»ç¿ëÇϰųª Bus
Termination ´ë½Å¿¡ Repeater¸¦ »ç¿ëÇÏ´Â ¹æ¹ýÀÌ ÀÖ½À´Ï´Ù.
3. PROFIBUS Cable ¹èÄ¡±ÔÁ¤
À̹ø ³»¿ëÀº PROFIBUS ¼³Ä¡½Ã EMC(ElectroMagnetic Compatibility)¸¦ ¹æÁöÇϱâ
À§ÇÑ ÀϹÝÀûÀÎ ÀÌÇظ¦ ³ôÀ̱â À§ÇÑ°Í¿¡ ÃÐÁ¡À» ¸¶ÃƽÀ´Ï´Ù.
´õºÒ¾î¼ »ç¿ëÀÚ°¡ °¡Á®¾ß ÇÏ´Â ¾ÈÀü±ÔÁ¤°ú ÇÔ²² Á¦Àۻ翡¼
³ª¿À´Â ¾È³»ÁöħÀ» Âü°í¹Ù¶ø´Ï´Ù.
3.1 µ¿ÄÉÀ̺í(Copper Cable) ¹èÄ¡
Interference-immune symmetrical bus system¿¡ ±âÃÊÇÑ PROFIBUS
½Ã½ºÅÛÀÇ µ¥ÀÌÅÍ Àü¼ÛÀº RS 485¹æ½ÄÀ¸·Î½á shielded twisted pair cableÀ»
»ç¿ëÇÕ´Ï´Ù. ½Ã½ºÅÛÀÌ Á¤È®ÇÏ°Ô ¼³Ä¡µÇ¸é Á¤»óÀûÀÎ µ¥ÀÌÅÍ ±³È¯À»
¹æÇØÇÏ´Â ¿äÀεéÀº µ¥ÀÌÅÍ ¶óÀο¡ ¾Æ¹«·± ¿µÇâÀ» ÁÖÁö ¾Ê°í ÄÉÀ̺í
Shield¸¦ ÅëÇÏ¿© Á¢Áö·Î ¹æÃâµË´Ï´Ù.
switching processes, Á¤·ù±â, Â÷´Ü±â °°Àº°÷¿¡¼ ¹ß»ýÇÏ´Â ÀüÀÚ±âÀû
°£¼·Àº ÀåºñÀÇ µ¿ÀÛ¿¡ ³ª»Û ¿µÇâÀ» ¹ÌÄ¡°Ô µÇ°í, °úÀü¾Ð°ú ¹ø°³¿Í
°°Àº ¼ø°£Àü¾ÐµîÀº Çʵå¹ö½º µð¹ÙÀ̽º ÀüÀÚÀåÄ¡¸¦ °íÀå³À´Ï´Ù.
ÀιöÅÍ(variable speed drives)¸¦ Æ÷ÇÔÇÏ°í ÀÖ´Â ±âÁ¾Àº EMC ¼øÀÀÀ» À§ÇÑ
´ÙÀ½ÀÇ ÀåÄ¡°¡ ÀÖ´ÂÁö Á¦ÀÛ»ç ¸Þ´º¾óÀ» Àß »ìÆ캸¾Æ¾ß ÇÕ´Ï´Ù.
- Filters,
- Chokes¿Í Shielding
Ãß°¡ÀûÀÎ ÀåÄ¡·Î½á Control cabinet³»¿¡ Çü±¤·¥ÇÁ°¡ ¼³Ä¡µÇ¾î ÀÖ´Â
°æ¿ì¿¡´Â Electronic starter°¡ »ç¿ëµÇ°í ÀÖ´Â °ÍÀÔ´Ï´Ù.
´ÙÀ½ÀÇ cableÀº shielded twisted pair cableÀÔ´Ï´Ù. cable shield´Â ÀüÀÚ±âÀû
°£¼·À» ¹æÁöÇϴµ¥ »ç¿ëµÇ´Âµ¥ PROFIBUS cableÀº Àüµµ¼ºÀÌ ÀÖ´Â braid¿Í
foil·Î Shield µÇ¾î¾ß Çϸç "shield"¶ó°í ÇÏ¸é µÎ°¡Áö(braid¿Í foil)·Î
±¸¼ºµÈ°ÍÀ» ¸»ÇÕ´Ï´Ù. foil shield´Â ¸Å¿ì ¾ã¾Æ¼ ¼Õ»óµÇ±â ½¬¿î°ü°è·Î
´Üµ¶À¸·Î´Â »ç¿ëµÇÁö ¾Ê½À´Ï´Ù. cable shield´Â Àüµµ¼ºÀÌ ÁÁÀº Á¢Áö¿¡
ÄÉÀ̺í shield ¾ç´ÜÀÌ Á¢ÁöµÇ¾î¾ß ÇÕ´Ï´Ù. µÎ°¡´ÚÀÇ PROFIBUS data lineÀº
¼·Î´Ù¸¥»öÀÎ A¿Í B·Î ³ªÅ¸³»°í »ö±òº°·Î Çʵå¹ö½º µð¹ÙÀ̽º¿¡
¿¬°áÇؾßÇÏ´Â ±ÔÁ¤Àº ¾øÁö¸¸ °°Àº»öÀº °°Àº»ö³¢¸® ¿¬°áÇϴ°ÍÀÌ
ÁÁ½À´Ï´Ù. ¸¸¾à ÄÉÀ̺íÀÇ µÎ°¡´ÚÀÌ Àû»ö°ú ³ì»öÀ¸·Î µÇ¾îÀÖ´Ù¸é
´ÙÀ½ÀÇ °æ¿ìó·³ »ç¿ëµÉ ¼ö ÀÖ½À´Ï´Ù.
Data cable wire A - green
Data cable wire B - red
ÀÌ°ÍÀº ÀÔÃâ·Â µ¥ÀÌÅÍ ¶óÀÎ ¿¬°á¿¡ °øÈ÷ Àû¿ëµË´Ï´Ù.
3.1.1 Control cabinet³»¿¡ ÄÉÀÌºí¼³Ä¡
¸¸¾à Repeater ¶Ç´Â Çʵå¹ö½º µð¹ÙÀ̽º¸¦ control cabinet¿¡ ¼³Ä¡ÇÒ
°æ¿ì¿¡´Â ±×¸² 3-1À» ÂüÁ¶ÇÏ¿© ¼³Ä¡ Çϱ⠹ٶø´Ï´Ù.
±×¸² 3-1 : PROFIBUS cableÀ» Àüµµ¼º Ç¥¸é¿¡ Shield connection
¹æ¹ý
´ÙÀ½Àº PROFIBUS cableÀ» ijºñ³Ý¿¡ ¼³Ä¡ÇÏ´Â °æ¿ìÀÇ ±ÔÄ¢ÀÔ´Ï´Ù.
Ç¥ 3-1 : control cabinet³»¿¡ ÄÉÀÌºí ¼³Ä¡
3.1.2 control cabinet ¹Û¿¡ ÄÉÀÌºí ¼³Ä¡
ÄÉÀ̺íÀ» ¿ÜºÎ¿¡ ¼³Ä¡½Ã¿¡´Â(Ç¥ 3-1 ÂüÁ¶) ¸ðµç ÄÉÀ̺í´öÆ®´Â
Àüµµ¼ºÀÌ ÁÁÀº ÀçÁú·Î ±¸¼ºµÇ¾î Áö¹Ý¿¡ Á¢ÁöµÇ¾î¾ß ÇÏ¸ç ºÎ½Ä¿¡
°ÇÑ ÀçÁúÀ» »ç¿ëÇØ¾ß ÇÕ´Ï´Ù.
3.1.3 °Ç¹° ¿ÜºÎ¿¡ ÄÉÀÌºí ¼³Ä¡
°Ç¹°¿ÜºÎ¿¡ Bus¸¦ ¼³Ä¡½Ã¿¡´Â ±¤ÄÉÀ̺íÀ» »ç¿ëÇϴ°ÍÀÌ ÁÁ½À´Ï´Ù.
°Ç¹°°ú °Ç¹°»çÀÌ¿¡ ¼³Ä¡µÇ´Â °æ¿ì¿¡´Â ¾Ë¸Â´Â Ưº°ÇÑ TypeÀÇ
±¤ÄÉÀ̺íÀ» »ç¿ëÅä·Ï ÇÏ°í ±¤ÄÉÀ̺íÀ» »ç¿ëÇÒ ¼ö ¾øÀ»¶§´Â
µ¿ÄÉÀÌºíµµ »ç¿ëÇÒ ¼ö ÀÖ½À´Ï´Ù¸¸ ±¤ÄÉÀÌºí¸¸ÅÀÇ ½Å·Ú¼ºÀº °®°í
ÀÖÁö ¾Ê½À´Ï´Ù. ¿ÜºÎ¼³Ä¡½Ã¿¡´Â »ç¿ëµÇ´Â ÄÉÀ̺íÀÌ Çã¿ëÇÒ ¼ö
ÀÖ´Â ÃÖ´ë,ÃÖ¼Ò Çã¿ë¿Âµµ¿¡ À¯ÀÇÇϱ⠹ٶø´Ï´Ù.
±×¸² 3-2 : °Ç¹°¹Û¿¡ ¼³Ä¡ bus cable ¼³Ä¡
¿øÄ¢ÀûÀ¸·Î °Ç¹°³»¿ÜºÎ¿¡ ÄÉÀ̺íÀ» ¼³Ä¡½Ã ±ÔÄ¢Àº
µ¿ÀÏÇÏÁö¸¸ °Ç¹°¿ÜºÎ ¼³Ä¡½Ã¿¡´Â ÄÉÀ̺íÀ» ÇÁ¶ó½ºÆ½ °üµîÀ¸·Î º¸È£
¹Ù¶ó¸ç ¿ÜºÎ¼±ÀÌ ³»ºÎ·Î ÀÎÀԵɶ§´Â º¸Á¶ Å͹̳¯ ºí·°À»
»ç¿ëÇÕ´Ï´Ù. ÄÉÀ̺íÀÌ ³»ºÎ·Î ÀÎÀԵǴ°÷¿¡´Â ¹ø°³µî¿¡ ÀÇÇÑ
¿ÜºÎ¿µÇâÀ¸·ÎºÎÅÍÀÇ ¼Õ»óÀ» ¹æÁöÇϱâ À§ÇÑ ÀåÄ¡¸¦ ¼³Ä¡ÇØ¾ß Çϴµ¥
ÀÌ°ÍÀÌ º¸Á¶ Å͹̳Πºí·°ÀÌ°í ³»ºÎ¿¡´Â °úÀü·ù¹æÁö ÀåÄ¡°¡
µé¾îÀÖ½À´Ï´Ù.
3.1.4 Potential equalization°ú screening
ÄÉÀÌºí ¾ç´ÜÀ» Á¢Áö¿¡ ¿¬°áÇصµ °è¼ÓÇÏ¿© °£¼·¹®Á¦°¡
¹ß»ýÇÑ´Ù¸é ±¤ÄÉÀ̺íÀ» »ç¿ëÇϴ°ÍÀÌ °¡Àå ÁÁÀº ¹æ¹ýÀÌÁö¸¸
°¡´ÉÇÏÁö ¾Ê´Ù¸é Low impedance potential equalization cableÀ» »ç¿ëÇÕ´Ï´Ù.
´ÙÀ½ÀÇ °æ¿ì´Â °£¼·Çö»ó¿¡ ÀÇÇÑ ¹®Á¦°¡ ³ªÅ¸³¯¼ö ÀÖ´Â °æ¿ìÀÔ´Ï´Ù.
³ÐÀº Áö¿ªÀ¸·Î È®ÀåµÈ Plant
¼·Î´Ù¸¥ µ¿·Â°ø±Þ¿øÀ¸·Î ºÎÅÍ
µ¿·ÂÀ» Á¦°ø¹ÞÀ»¶§
¿©·¯ °Ç¹°·Î È®ÀåµÈ Network
À§ °æ¿ìÁß Çϳª·Îµµ ÇØ´çµÈ´Ù¸é potential equalization systemÀ» ¼³Ä¡ÇÏ°í
Potential equalization cableÀÇ °£¼·ÀÛ¿ë ¹æÁöÈ¿°ú¸¦ ÃÖ´ë·Î ¾òÀ¸·Á¸é
¼³Ä¡½Ã ÁÖÀǸ¦ ±â¿ï¿©¾ß ÇÕ´Ï´Ù. °¡´ÉÇÑ potential equalization cableÀ»
data cable (µÇµµ·ÏÀÌ¸é µ¿ÀÏÇÑ ÇÁ¶ó½ºÆ½°ü³»)¿¡ Á¢±Ù½ÃÄÑ º´·Ä·Î
¼³Ä¡Çϸç Cable screenÀº potential equalizationÀ» ¼³Ä¡ÇÑ °æ¿ì¿¡´Â Àý´ë
»ç¿ëÇÏÁö ¾Ê½À´Ï´Ù.
±×¸² 3-3 : Plant¿¡¼ EMC ¼øÀÀÀ» À§ÇÑ ¼³Ä¡
3.2 ÄÉÀ̺íÀÇ ¼±Åðú Bus Connector
º¸È£µî±ÞÀº ÀÀ¿ë¿µ¿ª¿¡ µû¶ó ´Ù¸£¸ç Á¤±âÀûÀ¸·Î
°»½ÅµÇ´Â PROFIBUS Product Catalogue¿¡ »ç¿ëµÇ´Â ÄÉÀ̺í°ú Ä¿³ØÅÍÀÇ
Á¾·ù¸¦ »ó¼¼È÷ °ÔÀçÇÏ°í ÀÖÀ¸´Ï »ç¿ëÀÚ²²¼´Â Âü°í¹Ù¶ø´Ï´Ù.
Çʵå¹ö½º µð¹ÙÀ̽º¸¦ Bus¿¡ Á¢¼Ó½ÃÅ°±â À§Çؼ´Â ÃÖ¼ÒÇÑ Bus segment´ç
ÇϳªÀÇ Bus Ä¿³ØÅÍ°¡ ÀÖ¾î¾ß ÇÕ´Ï´Ù. Bus ÄÉÀÌºí¿¡ Bus Ä¿³ØÅ͸¦
Á¢¼Ó½ÃÅ°±âÀü¿¡ Ä¿³ØÅÍÀÇ ±â°èÀû ±¸Á¶¿Í ±â´ÉÀ» °ËÅäÇØ¾ß Çϴµ¥
ÀϹÝÀûÀ¸·Î ¼±°¡´ÚÀÌ Ä¿³ØÅͳ»¿¡ A¿Í B·Î Ç¥½ÃµÇ¾î Àִ°ÍÀ»
Àüü½Ã½ºÅÛ¿¡ °øÅëÀûÀ¸·ÎÀ¸·Î µ¿ÀÏ»ö³¢¸® ¿¬°áÇØ Áִµ¥(3-1Àå
³»¿ëÂüÁ¶) À̶§ Åë½Å°¡´ÚÀÌ Shield¿¡ Á¢Ã˵ÇÁö ¾Êµµ·Ï ÁÖÀǹٶø´Ï´Ù.
3.3 Grounded reference voltage ¼³Ä¡¹æ¹ý
ÀϹÝÀûÀ¸·Î ÀåÄ¡µéÀº grounded system°ú °°ÀÌ ¹èÄ¡µÈ´Ù.
Àü¿øÀü´Þ Á¢Áö´Â functional ground¿¡ ¿¬°áµË´Ï´Ù. (±×¸² 3-4). ±×¸² 3-3¿¡¼
º¸µíÀÌ ¹ö½ºÄÉÀ̺í Shield´Â ÄÁÆ®·ÑÄɺñ³Ý¿¡ µé¾îÀÖ´Â potential
equalization system¿¡ ¿¬°áµË´Ï´Ù. potential equalization railÀº °¢ ÄÁÆ®·Ñ
Äɺñ³Ý³»¿¡¼ Á¢ÁöµÇ°í ´Ù¸¥ ÄÁÆ®·Ñ ijºñ³Ý¿¡ ÀÖ´Â potential
equalization rails°ú ¿¬°áµÈ´Ù.
±×¸² 3-4 : Grounded reference voltage Plant ¹è¼±µµ
3.4 Non-grounded reference voltage
¼³Ä¡¹æ¹ý
¿¹¿ÜÀûÀÎ »óȲ¿¡¼´Â non-grounded systemÀ» ¼±ÅÃÇÒ ¼ö
Àִµ¥ ÀÌ°ÍÀº high short-circuit Àü·ù°¡ ¹ß»ý½Ã ÇÊ¿äÇÕ´Ï´Ù.(induction
furnacesµî). non-grounded system¿¡¼´Â voltage limiter°¡ ÀÖ´Â monitoring device°¡
ÇÊ¿äÇϸç(±×¸² 3-5) "non-grounded"´Â Á¢Áö¿Í PE°£¿¡ µé¾îÀÖ´Â R/C
ȸ·Î¿¡µµ »ç¿ëµË´Ï´Ù. ¸¹Àº Á¾·ùÀÇ deviceµéÀº °£¼·Çö»óÀ» ¹æÁöÇϱâ
À§ÇÏ¿© ÀÌ°°Àº R/C ȸ·Î°¡ µé¾îÀÖ½À´Ï´Ù.
±×¸² 3-5 : Non-grounded reference voltage Plant ¹è¼±µµ
3.5 Repeater ¿¬°á
Repeater´Â ÀϹÝÀûÀ¸·Î ¿ÜºÎ¿¡¼ Àü¿øÀ» °ø±Þ¹Þ½À´Ï´Ù.
Repeater´Â non-grounded system¿¡ ¿¬°áµÇ¾î µÎ°³ÀÇ Bus segment »çÀÌ¿¡¼
galvanic isolationÀ» °¡´ÉÇÏ°Ô ÇÏ´Â ¿ªÇÒÀ» ÇÕ´Ï´Ù. ¼³Ä¡½Ã Á¦ÀÛ»ç
¾È³»¼¸¦ ÂüÁ¶¹Ù¶ó¸ç Repeater´Â °¡´ÉÇÑ ÄÁÆ®·ÑÄɺñ³Ý¾È¿¡ top-hat rail¿¡
Á¢ÇÏ¿©¼ À§Ä¡ÇØ¾ß ÇÕ´Ï´Ù. ohmmeter¸¦ »ç¿ëÇÏ¿© Á¢Áö°¡ Á¤»óÀûÀ¸·Î
µÇ¾ú´ÂÁöµµ È®ÀÎ ¹Ù¶ø´Ï´Ù.
4. Ãß°¡³»¿ë
ÀÌ¿Ü¿¡ ´ÙÀ½°ú °°Àº ³»¿ëÀÌ PROFIBUS guideline¿¡ ¼³¸íµÇ¾î ÀÖ½À´Ï´Ù.
- Commissioning of PROFIBUS equipment
- PROFIBUS cable°ú bus connector ½ÃÇè
- Determining the loop resistance
- Testing for correct bus termination
- Determining the segment length and cable route
- ¿©·¯°¡Áö ½ÃÇè¹æ¹ý
- Example of an equipment report
PROFIBUS guideline¿¡ ÀÖ´Â "PROFIBUS-DP/FMS ¼³Ä¡Áöħ" (ÁÖ¹®¹øÈ£ 2.112)À»
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