3ASC25H208 ABB

ABB A9-30-10,AC220V
ABB SDCS-IOB-3-COAT 3ADT220090R0020
ABB SDCS-IOB-22-COAT 3ADT220090R0013
ABB 8018545 PUMP, 4N, 230 V, 50/60 HZ
ABB 8018545 PUMP, 4N, 230 V, 50/60 HZ

分类: 标签:

Description

对于隔离性能差的系统,还将导致信号间互相干扰,引起共地系统总线回流,造成逻辑数据变化、误动和死机。PLC控制系统因信号引入干扰造成I/O模件损坏数相当严重,由此引起系统故障的情况也很多。接地是提高电子设备电磁兼容性(EMC)的有效手段之一。正确的接地,既能抑制电磁干扰的影响,又能抑制设备向外发出干扰;而错误的接地,反而会引入严重的干扰信号,使PLC系统将无法正常工作。

90 Day Warranty – Free Shipping If You Buy it Now

Extreme Networks Black Diamond 6808 MSM64i WDMi Switch
90 Day Warranty – We Accept Corporate PO’s

Enlarge
Cisco ESR-6CT3 6 Port Channelized T3 ESR10008 Rev 4
90 Day Warranty – Free Shipping!

Lucent GX 550 Multiservice WAN Switch
Juniper J6300 Router 2x JX-1DS3 1x JX-2FE-TX