English
فارسی
العربية
Power supply`s running in PLC module
The low-pass filter can absorb most of the " burrs " of the power supply .L1 and L2 in the figure are used to suppress
high-frequency differential mode voltage . L1 and L2 are reversely wound on the same magnetic ring with equal
length wires , The magnetic flux generated by the power frequency current in the magnetic ring cancels each other,
and the magnetic ring will not be saturated.
The magnetic flux generated by the common-mode interference current in the two lines is superimposed in this ring,
and the common-mode interference is blocked by L3 and L4. C1 and C2 in the figure are used to filter out the
common-mode interference voltage, and C3 is used to filter out Differential mode interference voltage. R is a varistor,
its breakdown voltage is slightly higher than the highest voltage of the power supply, and it is usually quite open. It is
broken down when it encounters a peak interference pulse, and the interference voltage is clamped by the varistor.
At this time, the terminal voltage of the varistor is equal to its breakdown voltage.
Have interest in the following parts? get in touch with Vivi (sh_plc@163.com).
Siemens 6ES7322-1BL00-0AA0 SIMATIC S7-300 Digital Output Module, B&R X20DC2396 Controller Counter Module, Allen Bradley 1756-ENBT Ethernet I/P Communication Module, Siemens 6ES7321-1FH00-0AA0 Digital Input Module
Scan to wechat :
Home
Products
whatsapp