410-62 |
|
||||||||||||||
Application-Smatlab Digital Input / Out Data Acquisition Card | ||||||||||||||
Digital Output Digital output provides
functions for turning electric device ON or OFF. The Applications are
ranged from driving a relay to turning ON/OFF lamp solenoids,
contactors, motors, or alarms etc. In application for latching outputs,
a "1" typically causes the associated switch or relay to latch, while a
"0" causes the switch to unlatch. Devices can be turned on or off,
depending on whether the external device is need normally open (ON) or
normally closed (OFF).
|
||||||||||||||
|
||||||||||||||
Relays
and Contacts Same
to switches, relays are always drawn in the off are un-operated
position. Contacts may be drawn in different ways as shown below; but
the middle contact (labeled 2 below) is the wiper arm and will move when
the relay is energized. This contact is called the changeover contact,
abbreviated CO. The top contact (labeled 1) is the normally closed, NC
contact (relay not energized) and contact 3 known as normally open, NO.
When power is applied to the relay coil, the NO contact is then
mechanically and electrically contacted to the CO contact.
|
||||||||||||||
Data Sheet - Relay : Word File BRD-1A05 Hyper Link |
||||||||||||||
|