Electromagnetic relay 2 open 2 closed what it means
As shown below, 2 open 2 closed electromagnetic relays generally have 8 terminals, respectively, 1,5,9,13,4,8,12,16. Where 13, 16 are connected to the coil, 1 and 9, 4 and 12 are normally closed contacts; 5 and 9, 8 and 12 are normally open contacts. When 13,16 is energized, 5 and 9 are engaged, 8 and 12 are pulled together, and 1 and 9 are disconnected, 4 and 12 are disconnected. 2 normally open contacts, 2 normally closed contacts
2 open 2 closed 2 normally open contacts, 2 normally closed contacts.
Often open also known as dynamic type (H type), the coil is not energized when the two contacts are disconnected, power, the two contacts on the closed. To the word "H".
Normally closed also known as dynamic type (D type), the coil is not energized when the two contacts are closed, after the two contacts on the power off. With the word "D" of the word.
2 open 2 closed is that the type of electromagnetic relay with 2 normally open contacts, 2 normally closed contact.
Relay in the coil is not available, the open state of the contact is normally open contact, closed state of the contact is normally closed contact. Commonly used NO that normally open contact, with the corresponding NC is normally closed contact
?????? N = NORMAL: normal
?????? O = OPEN: open
?????? C = CLOSE: off
