It can be used to interface with another machine that has a different voltage to the machine with the relay. For example, you want to give a machine running signal to the other machine, so you energise the relay and use the volt free contacts to tell the other machine that the system is running. Hope this helps.he other reason is that it is cheaper that way since the device doesn't have to have a 24VDC power supply inside it just to provide a signal output. Instead, they rely on you to provide that. This is one of those terms which has come into use as a short hand description for a common configuration.
Five states are in both the eastern and central time zones. Those are Florida, Indiana, Kentucky, Michigan and Tennessee. View the boundary line between eastern and central Time Zones. Five other states are in both the central and mountain time zones. Those are Kansas, Nebraska, North Dakota, South Dakota and Texas. View the boundary line between central and mountain Time Zones.
(August 2014). The Central Time Zone (CT) is a time zone in parts of Canada, the United States, Mexico, Central America, some Caribbean Islands, and part of the Eastern Pacific Ocean.Time in the zone is six hours behind Coordinated Universal Time (Greenwich Mean Time-GMT).During daylight saving time (DST), time in most (but not all) of the zone is five hours behind GMT.aylight saving time (DST) is in effect in much of the Central time zone between mid-March and early November. The modified time is called Central Daylight Time (CDT) and is UTCâ5. In Canada, Saskatchewan does not observe a time change.