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如果必須要在上面的環(huán)境使用，則要為PLC制作合適的控制箱，采用規(guī)范和必要的防護措施。如果需要在野外極低溫度下使用，可以使用有加熱功能的控制箱。如何做這些防護箱或控制箱，各制造商和和資格的系統(tǒng)集成商將會為客戶提供相應(yīng)的供應(yīng)和設(shè)計。
在使用控制箱時，在控制箱內(nèi)OpenPLC安裝的位置要注意如下事項：控制箱內(nèi)空氣流通是否順暢（各裝置間須保持適當?shù)木嚯x），變壓器、馬達控制器、變頻器等是否與PLC保持適當距離，動力線與信號控制線是否分離配置，組件裝設(shè)之位置是否利于日后之檢修，是否需預(yù)留空間，供日后系統(tǒng)擴充使用。
除了上述注意事項之外，還有其它注意事項要留意。
首先比較重要的是靜電的隔離。靜電是無形的殺手，但可能因為不會對人造成生命危險，所以許多人常常忽視它。在中國的北方、干燥的場所，人體身上的靜電都是造成靜電損壞電子組件的因素。雖然你被靜電打到的話，只不過是輕微的酥麻，但這對PLC和其它任何電子器件就足以致命了。
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鄭娟萍
廈門仲鑫航自動化設(shè)備有限公司
要避免靜電的沖擊有下列三種方式：在進行維修或更換組件時，請先碰觸接地的金屬，以去除身上的靜電；不要碰觸電路板上的接頭或是IC接腳；電子組件不使用時，請用有隔離靜電的包裝物，將組件放置在里面。想象PLC里的元器件是一個嬌嫩的嬰兒，而那些靜電會導(dǎo)致這個嬰兒死亡，你就會更容易以正確的態(tài)度對待這個問題了。
基座安裝（RACK）時，在決定控制箱內(nèi)各種控制組件及線槽位置后，要依照圖紙所示尺寸，標定孔位，鉆孔后將固定螺絲旋緊到基座牢固為止。在裝上電源供應(yīng)模塊前，必須同時注意電源線上的接地端有無與金屬機殼連結(jié)，若無則須接上。接地不好的話，會導(dǎo)致一系列的問題，靜電、浪涌、外干擾，等等。由于不接地，往往PLC也能夠工作，因此，不少經(jīng)驗不足的工程師就誤以為接地不那么重要了。這就像登山的時候，沒有系上保護纜繩一樣，雖然你正常前進的時候，保護纜繩沒有任何作用，但一旦你失足的時候，沒有那根繩子，你的生命就完結(jié)了。PLC的接地，就相當于給PLC系上保護纜繩。
Sugino Selfeeder Mechatric Self-feeding Drill Package, # MSX-113S, Used WARRANTY
Sugino Selfeeder Drill Unit, # S26011, # ES5-4A-1307UC, WARRANTY
SUHNER Economaster Pneumatic Automatic Drill Unit w/ Motor, Tapping Head, Used
SUHNER Economaster Pneumatic Automatic Drill Unit w/ Motor, Used, WARRANTY
Sugino Newtric Selfeeder Drilling Unit, Model SN4U, 1/2 HP, w/ Multi Drill Head
CNC Drill Unit, 1/2 HP Drive Motor, 5.5" Quill Travel, DA20 Collet Holder, Used
Sugino Newtric Selfeeder Drilling Unit, Model SN5U, 1 HP, 1400 RPM, Used
1 HP Hypneumat Drilling Unit, DQ350EHB P/L 6013-B, Used, Warranty
Sugino Selfeeder Mechatric Drill w/Multi Head, # MSX-113S, WARRANTY
Bellows-Locke Drilling Unit, Mod# F202-1301, 1/2 HP, 230/460V, 1/2" Chuck, Used
Electro-Mechano Precision Gear Head Drill Press, Mod 111W, 115V, 15,000 RPM Max.
Electro-Mechano Precision Gear Head Drill Press, Mod 113E, 115V, Used
Bellows-Locke Drilling Unit, Mod# 5E, 1/2 HP, 230/460V, 3/8" Chuck, Used
Sugino Selfeeder Mechatric Self-feeding Drill, MSX-113S, Used, WARRANTY
Sugino Selfeeder Mechatric Self-feeding Drill, # MSX-113S, WARRANTY
Bellows-Locke Drilling Unit, Mod# 5E, 1/2 HP, 230/460V, 3/8" Chuck NO PULLEYS
Schrader Bellows Pneumatic Drill Unit, # B20131423, Used, WARRANTY
Hypneumat M200EHB Air Feed / Electric Driven Drill Unit, 1/2 HP, Used, Warranty
Sugino Selfeeder Mechatric Self-feeding Drill MSX-124SE
Rockwell 21L 803C Pneumatic Self-Feed Drilling Unit, 2800 RPM, Used, Warranty
6"x18" Reid Hydraulic Surface Grinder, Mod# 618HYD, Chuck, Downfeed, Used
6" x 18" Boyar-Schultz Hydraulic Surface Grinder, Mod# 2A618, Used
Baldor Bench Grinder / Tool Sharpener, Cat# 8123WD, 3/4 HP, 3 Ph 230/460V Used
Mazak Quick Turn 20 Universal CNC Turning Center Hydraulic Tailstock, Used,
NEW Riken Collet Chuck w/ Accessories, AD-40E, NIB, O-CHS-244, 7H003012
NEW Riken Collet Chuck, AD-40E, NIB, O-CHS-244, 7H003012
MicroCentric CB65-D Collet Chuck off Okuma LT25 CNC Center, Mfg'd: 1998
1995 Toyoda FA550 CNC Horizontal Machining Center, 10000 RPM, 2 - Pallets, Used
Stama MC 326 Milling Spindles, (2) HSK63 w/ Siemens Drives, Mfg'd: 2004,
LeBlond Makino MC-86 MC 86/ CNC Horizontal Machining Center Pallet, 1995, Used
Matsuura MC-600VDC 20 Position Tool Changer Assembly, Complete, Right Side, 1995
Matsuura MC-600VDC 20 Position Tool Changer Assembly, Complete, Left Side, 1995
Tsubakimoto Emerworm Gearbox, 60:1 Ratio, ED60GCV60LD, for Tool Changer
Matsuura MC-600VDC BT40 Spindle Assembly, w/ Draw Bar Unit, Right Side, 1995
Matsuura MC-600VDC BT40 Spindle Assembly, w/ Draw Bar Unit, Left Side, 1995
Machine Pallet for Hitachi Seiki HC-400 Horizontal Machining Center 15.7"x15.7"
Tsugami CNC Machine Pallet for Machining Center, 17-5/8" x 17-5/8", Used
6" x 18" x 2-3/4" Hitachi Electro-Magnetic Chuck w/Controller, HL-618C, WARRANTY
6" x 18" x 3-1/4" Hitachi Electro-Magnetic Chuck w/Controller, HR-618C, USED
8" x 14" x 4-5/8" Walker Electro-Magnetic Univ. Tilting Chuck, Used, WARRANTY
6" x 18" x 3-13/16" Magna-Lock Electro-Magnetic Chuck, 115 VDC, Used
Setco 3500 RPM Milling Spindle w/ Fanuc Built In Drive Motor, Used, WARRANTY
First (Bridgeport) Vertical Mill, 42" Table, 80-2760 RPM, R8 Taper, Used
Hurco BMC 40M Milling Spindle Assembly, Cat 40 Spindle Taper, Used
Mazak VQC 2050B Machining Center Milling Headstock, CAT 50 Spindle, Used
Setco 6000 RPM Reversible Milling Spindle, # 4604BY.22556, Used, WARRANTY
EI Hagiwara CPU 8CB PC Board, C-8172-1030G, Used, WARRANTY
Shinko Motolock Power Draw Bar Unit, # M-3000S2, Used, WARRANTY
Sharnoa Tiger IV (4) CNC Control PC Board, SE-162, Used, WARRANTY
Sharnoa Tiger IV (4) CNC Control PC Board, SE-63-X, Used, WARRANTY
Sharnoa Tiger IV (4) CNC Control PC Board, SE 60X, Used, WARRANTY
Sharnoa Tiger IV (4) CNC Control PC Board, SE300-l, SE300-1, Used, WARRANTY
Sharnoa Tiger IV (4) CNC Control PC Board, SE-138L, USED, WARRANTY
Sharnoa Tiger IV (4) CNC Control PC Board, SE-171, Used, WARRANTY
Sharnoa Tiger IV (4) CNC Control PC Board, SE-170, Used, WARRANTY
Sharnoa Tiger IV CNC Control PC Board, SE 60K, Used, WARRANTY
Sharnoa Tiger IV (4) CNC Control PC Board, SE-170K, Used, WARRANTY
Sharnoa Tiger IV (4) CNC Control PC Board, SE-63K, Used, WARRANTY
Sharnoa Tiger IV (4) CNC Control PC Board, SE-171K, Used, WARRANTY
Sharnoa Tiger IV (4) CNC Control PC Board, SE-162, Used, WARRANTY
Sharnoa Tiger IV (4) CNC Control PC Board, SE176L, USED, WARRANTY
Sharnoa Tiger IV (4) CNC Control PC Board, SE-151K, Used, WARRANTY
Sharnoa Tiger IV (4) CNC Control PC Board, SE-138-x, Used, WARRANTY
Sharnoa Tiger IV (4) CNC Control PC Board, SE-148K, Used, WARRANTY
Sharnoa Tiger IV (4) CNC Control PC Board, SE-158K, Used, WARRANTY
Sharnoa Tiger IV (4) CNC Control PC Board, SE-151x, Used, WARRANTY
Sharnoa Tiger IV (4) CNC Control PC Board, SE 136K, Used, WARRANTY
Sharnoa Tiger IV (4) CNC Control PC Board, SE-154x, Used, WARRANTY
Sharnoa Tiger IV (4) CNC Control PC Board, SE-158x, Used, WARRANTY
Sharnoa Tiger IV (4) CNC Main Rack Control Base Board, SE-62X, Used, WARRANTY
Sharnoa Tiger IV (4) CNC Control PC Board, SE174L, Used, WARRANTY
Sharnoa Tiger IV (4) CNC Control PC Board, SE174 CS, Used, WARRANTY
CNC Control PC Board, SE 175, Used, WARRANTY
