Direct Digital Controls
- Monday, 06 October 2008 12:24
- Written by Richard Ashworth
How DDC Status Works - DDC and Status – Is the Device On or Off
This is a current switch sometimes referred to as a CT switch. This switch has an adjustable range from 1 to 200 Amperes. This switch also has a trip setting so it will trip if an adjusted set amount of amperes is exceeded.
The basics of DDC include learning about the status of a fan or a compressor or pump. How does a DDC controller read the status of the device it is monitoring? There are several ways to prove a device is running and some pros and cons of each type of device used to monitor on or off status. This is a basic DDC guide
or reference to help a person understand the basics of DDC status and how it works. When one learns how DDC status works they can improve their troubleshooting skills. Too many maintenance technicians and others including HVAC technicians don’t understand DDC systems or building automation systems
and are therefore crippled when it comes to troubleshooting DDC systems. High Performance HVAC hopes to change that and help HVAC techs and HVAC maintenance staff
learn the basics of DDC systems including how DDC status works. Once someone understands the basics about DDC a light will turn on and they will see that DDC is not really rocket science.
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