IBA 940143201模擬量輸入輸出模塊,IBA怎么使用
DIN導軌安裝抑制器，用于負載強行起下鉆和線路浪涌
保護IBA 940143201
如果噪聲是由僅在異常情況下工作的保護觸點產(chǎn)生的，而不是作為零件
在正常機器循環(huán)中，處理可能發(fā)生的控制停機的最佳方法
機器故障取決于應用。正常情況下，重新循環(huán)模塊控制電源將啟用恢復操作。
混合控制和功率級布線的問題在于，雖然穩(wěn)態(tài)電壓和電流產(chǎn)生的高電場很少是問題，但高電平開關瞬態(tài)可以通過
接線。源可能很難識別，并且由于高
涉及的功率級別。耦合量取決于導線的長度和接近程度。
安裝時，因導管內接觸而導致問題的導線可能不會有問題
在電纜槽中相隔幾英寸。電氣布線和安全規(guī)范規(guī)定了隔離
根據(jù)電壓和/或功率水平確定是否存在電擊和易燃危險，但不解決干擾問題。
大多數(shù)PLC輸入/輸出應視為低功率遠程控制；美國國家電氣公司示例
法典第725條，或加拿大電氣法典第16節(jié)。可能需要適度的隔離
足以減少對噪聲標準使用的典型環(huán)境水平的干擾。
PLC布線實踐文件包含在國際標準的第4部分中
PLC IEC1131-4。IBA 940143201模擬量輸入輸出模塊
other manufacturers make DIN rail mounted suppressors for both load snubbing and line surge
protection.
If noise is generated by a protective contact that operates only in abnormal conditions, not as part
of the normal machine cycle, the best way to handle possible control shutdown which may occur
during machine faults depends on the application. Normally, re-cycling module control power will
enable resumption of operation.
The problem with mixing control and power-level wiring is that while high fields due to steady
state voltage and currents are seldom a problem, high-level switching transients can couple through
the wiring. The source can be difficult to identify, and nearly impossible to suppress due to the high
power levels involved. The amount of coupling depends on the length and proximity of the wires.
Wires that cause a problem because of contact within a conduit may be no problem when installed
separated by a few inches in a cable tray. The electrical wiring and safety codes specify separation
by voltage and/or power levels for shock and flammability hazards, but do not address interference.
Most PLC I/O should be treated as low-power remote control; example USA National Electric
Code Article 725, or Canadian Electric Code Section 16. The modest segregation required is likely
sufficient to reduce the interference to the typical environmental levels used by the noise Standards.
A documentation of PLC wiring practices is contained in part 4 of the International Standard for
PLCs IEC1131-4.
