MVME162-522A技术问题亿佳询

MVME162-522A技术问题亿佳询
在选择设备时，首先要选择有较高抗干扰能力的产品，其包括了电磁兼容性（EMC），尤其是抗外部干扰能力，如采用浮地技术、隔离性能好的PLC系统；其次还应了解生产厂给出的抗干扰指标，如共模拟制比、差模拟制比，耐压能力、允许在多大电场强度和多高频率的磁场强度环境中工作；另外是靠考查其在类似工作中的应用实绩。在选择国外进口产品要注意：我国是采用220V高内阻电网制式，而欧美地区是110V低内阻电网。由于我国电网内阻大，零点电位漂移大，地电位变化大，工业企业现场的电磁干扰至少要比欧美地区高4倍以上，对系统抗干扰性能要求更高，在国外能正常工作的PLC产品在国内工业就不能可靠运行，这就要在采用国外产品时，按我国的标准（GB/T13926）合理选择。


2综合抗干扰设计
主要考虑来自系统外部的几种如果措施。主要内容包括：对PLC系统及外引线进行以防空间辐射电磁干扰；对外引线进行隔离、滤波，特别是原理动力电缆，分层布置，以防通过外引线引入传导电磁干扰；正确设计接地点和接地装置，完善接地系统。另外还利用软件手段，进一步提高系统的可靠性。

Graco Bung SST Adapter 253146
Graco Fluid Pressure Regulator SST 214706 214-706 Foam & Paint Sprayers 250PSI
Graco Husky 1050 Stainless Steel SST Air-Operated Double Diaphragm Pump - 651009
Graco Husky 1590 Corrosion Resistant Stainless SST Double Diaphragm Pump DT4311
Graco Husky 1590 Double Diaphragm Pump - Aluminum / Hardened SST # DB3341
Graco Husky 1590 Double Diaphragm Pump - Polypropylene / Hardened SST #DT2341
Graco Husky 1590 Double Diaphragm Pump - Stainless Steel / SST # DB4311
Graco Kit Repair SST 235636
Graco Probler P2 2 Way Valve Ball 1/8 NPTF SST Part# GC2337
Graco Twistork SST Air-Operated Agitator with Built-In Return Tube 236629
Graco Twistork SST Air-Operated Agitator with Built-In Return Tube 236629
Graco, 236588, Valve Housing SST          
GRD100 Blk Tag, 3/4 x 2 In, Sil, 304 Sst, Rect, PK50
GRD102 Blk Tag, 3/4 x 3-1/2 In, Sil, 304 Sst, PK50
GRE043 Ltr Carrier, 3/8 In, Sil, 316 Sst, PK25
Greenwood Products 04-2SST241 Clear Glass 2oz Straight Sided Jar, with White of
Greenwood Products 05-8SST243 Amber Glass 8oz Straight Sided Jar, with White Cap
Ground Terminal Block 7" X 2.25" X .5" Thk, SST, 10-32 Tap, BOX 1 #1603A7
GroundsKeeper Outdoor Tuscan Cigarette Receptacle, Sandstone (RCP 9W30 SST)
Groundskeeper Tuscan Receptacle, 13 X 13 X 38 3/8, Sandstone
GroundsKeeper Tuscan Receptacle, 13 x 13 x 38 3/8, Sandstone
GroundsKeeper Tuscan Receptacle, 13 x 13 x 38 3/8, Sandstone 9W300SST
GSI ENCODER SST-11-E2-B96B *          OUT OF BOX*
GSI LUMONICS DRC SST-11-S4-91Z-S691 Encoder
GSR LUMONNICS SST-10-H4-96C-S558 *          OUT OF A BOX*
GUARDIAN 320-10F Sst Floor Flange
GUARDIAN AP050-079 Pull Rod, Sst, 29In.
GUARDIAN AP150-012B Drain Plate Assembly for Sst Bowl
GUARDIAN AP620-101H Sst 1/2In. Ball Vale with Handle
GUARDIAN AP620-335H Sst 1In. Shower Valve, Horizontal
GUARDIAN AP620-335V Sst 1In. Shower Valve, Vertical
HAM-LET 768LSS1/2X3/4 - 5 PCS - 316 SST Male Connector 1/2″ TUBE x 3/4″ MNPT
HAM-LET 768LSS1X1 - 5 PCS - 316 SST Male Connector 1″ TUBE x 1″ MNPT
HAM-LET 768LSS3/4X1 - 5 PCS - 316 SST Male Connector 3/4″ TUBE x 1″ MNPT
HAM-LET 768LSS3/4X3/4 - 5 PCS - 316 SST Male Connector 3/4″ TUBE x 3/4″ MNPT
HAM-LET 769LSS1/2X3/4 - 5 PCS - 316 SST Male Elbow 1/2″ TUBE x 3/4″ MNPT
HAM-LET 769LSS3/4X3/4 - 5 PCS - 316 SST Male Elbow 3/4″ TUBE x 3/4″ MNPT
HANNIFIN SST-3-BSPP NSPP SST3BSPP
HANNIFIN SST-3M NSPP SST3M
HANNIFIN SST-8        SST8
HANNIFIN SST-8    SST8
HANNIFIN SST-8M NSPP SST8M
HANNIFIN SST-8M    SST8M
HD BAUMANN 16-83811SA SANITARY ANGLE CONTROL VALVE SST
Heater IR Panel, 208 VAC 3KW SST, Quester Technology P/N 5720004
Hedland H626-016 EZ Flow meter 1/2" NPT SST water 1-16 GPM flowmeter RO plumbing
Helical 1/4" x 1" Vari. Pitch High Perf. Carbide End Mill w/C.R-SST,Titanium
Helical 3/8" x 1-1/4" Vari. Pitch High Perf. Carbide End Mill w/C.R-SST,Titanium
Helical 3/8" x 7/8" Vari. Pitch High Perf. Carbide End Mill w/C.R-SST,Titanium
HEX HEAD CAP SCREW - 1/4-20 X 1-1/2" SST (PK OF 100)
HMJ Ham-Let Motoyama 1/4" Male VCR-Male VCR Manual valve SST EVZS4R-BV
Hobart 00-475812 Kit Service SST 230V
Hobart 12 Quart Mixer Stainless Steel Wire Whip Whisk DWHIP-SST212
Hobart 80 Quart Stainless Mixing Bowl BOWL-SST080 P/N 00-275690           OS
Hobart DWHIP-HL4320 20 Qt Sst D Wire Whip
Hobart DWHIP-SST080 S/S "D" Wire Whip for L800 80 Qt Mixers
Hobart DWHIP-SST140 S/S "D" Wire Whip for 140 Qt Mixer
Hobart EDDOUGH-SST-030 Stainless Steel Dough Arm
Hobart SST112 12 Qt A-120-12 Classic Stainless Steel MIXING BOWL 425BOWLSST11
Hoffman/McLean SPECTRACOOL G28 Indoor Air Conditioner 6000U 4X G280626G151 SST
Hoffman/McLean SPECTRACOOL G57 Air Conditioner 20,000 U SS 4X SST G572026G102
Hoffman/McLean SPECTRACOOL G57 Air Conditioner 20,000 U SST 4X G572026G051
HOKE 0122A2C Unidirectional Reversible Electric Actuator PLUS 316SST VALVE          
HOKE 5000 PSI Shutoff Relief Valve 316SST 7223F6Y 419 1/4 Turn?           NOS