凭借我们多年来在工控行业的经验，始终如一地提供最高品质的备品备件，我们
全新原装的产品均提供一年质保的服务，大量现货让我们备货及时。
这是我的PLC，你的呢？
1771-VHSC浙江余姚
1771-VHSC浙江余姚
在现代化的工业生产中，大量采用了可编程序控制系统，可编程序控制器能在恶劣
的工作环 境下正常工作，但其构成的控制系统由于设计、安装、干扰等因素有时会
出现故障。有些问 题是在系统设计时考虑不周造成的。根据实践中的经验和教训，
本文阐述可编程序控制系统 设计时应注意的问题。
1、一个系统中使用的成熟技术至少应占到75%以上
“成熟技术”一是经过一定的生产实践考验的可编程控制器产品或类似设计，或者确
定能在未来的生产实践中，经得起考验；二是设计工作人员对于需要使用的技术要有
经验或有掌握它的能力。设计与配置一个可编程序控制系统选用的技术与设计方案切
实可行。因为一个生产过程控制系统，一旦做出来，要长久使用下去，难以找到机会
反复修改。设计的硬件系 统和编程软件，其中某些缺欠，可能一直隐藏在已完成的
系统中。若遇到发生破坏作用的条件，后果难以预料。
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CR Industries 49928 Oil Seals. Qty. 3
RHB Recessed Bearing, PN: 6013-2R5. Qty. 2
NB Corporation P/N: SMSF-20WUU Slide Bush
NB Corporation P/N: SMST-16WUU Slide Bush
Browning Model: VF4S-223 Flange Ball Bearing
Vlier Model: SSS66N Standard Stainless Steel Plunger. ...
Thomson Model: SFB8 Supper Pillow Block. Damage Outer ...
EATON 17033160 REV. A BALL JOINT QTY (4) NEW SEALED
MARTIN 40B11 SPROCKET NEW
Vlier Model: S-48P Spring Plungers, Qty. 4. New...
MB Manufacturing KC 45 Krown Regal Series
FMC / Link-Belt Model: 216 Pillow Block Bearing
Hub City B250X 1" Pillow Block Bearings, 3. New
Fafnir Ball Bearings Model: 5308W Open Bearing. New Ol...
NSK Model: P208 Pillow Block Bearing
ESA NSK Megatorque Drive, Type: ESA-LYZ1T15-21. No. YZ...
Motion Industries 5/8" Chrome Alloy Bearings
MRC Bearings Model:203SZZ-H2?01 Bearing. New Old Stock
Dodge Model: 1615 X 1-? Taper Lock Bushing. New Old ...
Torrington Model: CRS-10 Cam Follower Bearing. New O...
RHB Bearing, PN: 6013-2R5 w/o Recess Casing
2 Dodge Model: 1610 1-7/17 Taper Lock Bushing. ...
Thomson Model: SPB 6 Super Linear Pillow Block Bearing
Lot INA Model: NK6/10TN Needel Roller Bearings. Qty 3
SKF: 5210 Bearing. 50mm (Out) X 25mm (In) X 12.5mm (Th...
Thomson AccuGlide Model: RG25NL-0220 Linear Rail
Torrington Modek: IR-1216 Cam Follower Bearing. New O...
Thomson: OPN81420-SS Ball Bushing Linear Bearing. New ...
INA: PCSLT20 Two-Bolt Flanged House Bearings
Dodge Model: 2517 Taper-Lock Bushing. 1".?
Dodge: 113575 / TL18L050-1108 DYNA-SYNC Pitch New Old ...
Mixed Fafnir BearingsL W204PP, 9103PPG & More
Mixed SKF: 6204 Bearrings. See List Below
Reid Supply Company: FR-37 L-Handle Spring Plunger
Torrington Model: CRSB-10 Cam Follower. Replaces CF-5/...
SKF Model: N-15 Bearing Sleeve Adapter
RBC HEIM CFHD6 S0# 9821510 067 ROD END BEARING NEW
Thomson Model: SSU16 Super Smart Linear Bearing
Browing Mounted Bearings Model: VPS-210 AH
Torrington Bearings : CRS-14 7/8" Cam Follower. New O...
TORRINGTON RCB-061014 ROLLER CLUTCH BEARING NEW
Hepco / HepcoMotion JA-7-E Concentric Bearings
NSK Model: 6201Z Bearing. Qty. 2. New Old Stoc...
Timken Model: A-6062 Cone Roller Bearing. New Old Stoc...
NDH Bearing / Delco Model: 55602 Ball Bearing. New Old...
Thomson Model: SPB-12 OPN Super Pillow Block
Thomson Model: SB-12 Shaft Support Block
ALINABAL PF-8-G ROD END SPHERICAL BEARING QTY (4) NEW
Vlier Model: SFRT625P Handle Steel Plunger. New Old St...
MRC Bearings Model:203SZZ-H4?03 Bearing. New Old Stock
SNR Model: 6202 EE J3Q Bearing. New Old Stock
Accurate Bushing Company Model: YR-1-XK
SKF Model: FY 3/4 WM Flange Bearing Unit. New Old Stoc...
Mixed Lot of: RBC & Smith CAM Followers. See Below
Browning Model: VF2S-212 Flange Ball Bearing
Browning Model: MPS-222 Flange Pillow Block Bearing
Shuttleworth Model: SK-2073B Bearing Unit. New Old Sto...
AMI Bearings Model: UCP211-35 High Temperature Bearing
MB Manufacturing Model: C25-5/8 Pillow Block Bearing. ...
Sea．ｍａｓｔｅｒModel: NP-15 Pillow Block Bearing. Part?
Sea．ｍａｓｔｅｒModel: NPL-19 Pillow Block Bearing. Part Nu...
Boston Gear PN: 64549 / XL2-3/4 Pillow Blocks
Boston Gear PN: 64689-SH-1 Pillow Blocks, Qty.2
Sea．ｍａｓｔｅｒ(Morse) NP-10 Pillow Block Bearings
SKF Model: YAR208-2F / FRM (ASE08) Pillow Block Bearing...
Star Model: 0668-016, 08P Linear Bearing
THOMSON TWN-8-BG SUPER PILLOW BLOCK REFURBISHED
Mixed Lot McGill Model: CFH-3/4 & MCFR 22, Qty 10
Thomson: Super 3 LB Ball Bushing Bearings
Browning Model: MF2S-212 Flange Bearing
Rexnord: ZT2-2100 Prelubricated Self-Aligning Beari
Spadone-Alfa, Model: MC3 Pillow Block Bearing
Spadone-Alfa, Model: MC7 Pillow Block Bearing
Spadone-Alfa, Model: MC6 Pillow Block Bearing
Spadone-Alfa, Model: MC5 Pillow Block Bearing
Spadone-Alfa, Model: T47 2-Bolt Flang Bearing
Thomson SPB 12 ADJ Super Pillow Blocks on 15.5" Rail
HYATT 455506 PRECISION ROLLER BEARING NEW
NDH 455506 02952586 PRECISION BEARING. New Old Stock
Reliance Electric / Dodge: F4B-8C-010 5/8" Flange Bear
W.M. Berg Part Number: G1-7 Drive Rollers, 6
SealMaster: LFT-12 Bronze Line Pillow Block Bearing
NB Linear Motion: SW-8OP Retainers, 3. New
NB Linear Motion: SWS- 12 Slide Bush, 4. New
INA Model: RASEY? Pillow Block Bearing. New Old Stock...
Hub City Model: FB260X? Flange Mounted Bearing. New Ol...
NB Bearing Model: SWK-10GUU Slide Bush
NB Bearing Model: SWK-12GUU Slide Bush
MRC Bearings Model: R10ZZ Bearing. Steel/CO/ABEC-1
Precision Bearings Model: 1621-ZZ
FAFNIR AS5KDD TORRINGTON AS5KDD BEARING QTY (3) NEW
Vlier Model: BL-62 Steel Plunger. Qty. 2. New ...
SKF Model: GEZ012ES Bearings. Qty. 2 New Old ...
Thomson TWN 12 Super Pillows (2) on Rail w/ SB12 * W
Vlier Kop-r-Klad Toggle Clamps. New In Bag. O...
Brewer Machine & Gear Co. Model: S01 Idler. New Old S...
Samick LM Case Unit, Model: SC20WUU Linear Bearing
Samick LM Case Unit, Model: SC20UU Linear Bearing
Nice Inch Ball Bearing: 1621-DSTN, Boxed & Unused
Lot (VLSI) Roller Bearings, PN: 74-00176. 26, New
Dodge Model: 25TT419 Torque Tamer Sprocket. New Old S...
Thomson: Super 10 OPN Ball Bushing Linear Bearing. New...
Browning Pillow Block Bearings, Qty. 3
Thomson Model: SSU12 Super Smart Linear Bearing. Open ...
Lot NTN Bearings Model: DB50LB / 720I, Qty. 4
INA Two Bolt Flange Bearing, PN: 01L0T803? 5/8" Bore
Mixed Lot McGill CamFollower & CamYoke Bearings. 11 Pie...
Timken Model: 23092 Tapered Roller Bearing. New Old St...
Timken: 23256 Tapered Bearings Cups, Qty. 4
DODGE SC 1-3/8 Mounted Ball Bearing 207, New =
DODGE 121022 AK44H FHP HA LT DUTY SHEAVE 4 1/4"OD NEW
Vlier Model: SPR375 Pull Ring Steel Plunger. New Old ...
Thomson: Super 4 Bearing. New Old Stock
Browning Model: 2AK32 V-Belt, Two Groove Sheave
Browning Model: BK52H V-Belt, Single Groove Sheave
Browning: VF4E-116. Four Bolt Flange Eccentric Locking...
ASM Kit #: 2573695-01 Assy Bearings / Seals HT
Star Model: Two 1671-814-10 Linear Table w/ Star Rail *...
Browning Bearing: VPS-216 AH & VF2S-108
Browing: VF4S-223 Flange Ball Bearing, 1 7/16" Bore
