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| 4/26/2013 9:03 AM | |
Joined: 6/4/2010 Last visit: 9/30/2024 Posts: 387 Rating:
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Dear forum member, DDC stands for Direct Digital Control and is the automated control of a condition or process by a digital device. DDC is often used to control HVAC (heating, ventilating, and air conditioning) devices such as valves via microprocessors using software to perform the control logic. This is very similar to a PLC (Programmable Logic Controller). Both are normally free programmable and both communicate with other devices via a communication bus system. Easy speaking you can say that the DDC is for the Building Automation what the PLC is for the Industry Automation. DDC controllers for HVAC are normally delivered with specific application libraries for HVAC control. Also they often provide an open bus system, e.g. like BACnet (Data Communication Protocol for Building Automation and Control Networks).  The Desigo Building Automation System is the main Siemens range for HVAC and Building Automation. You can find the “Desigo PX - Automation system for HVAC and building services” – System description under the following link: http://www.hqs.sbt.siemens.com/gip/general/dlc/dlc_get_singlefile.asp?soi=A6V10361879 Please note that Siemens has a very wide range of control product for any requirement and type HVAC application. Other controller or control products can be found in the product catalogue: http://www.hqs.sbt.siemens.com/gip/general/dlc/dlc_get_singlefile.asp?soi=A6V10387472 The HVAC Integrated Tool (HIT) may help you to select the right controller or periphery device, just select your application: http://www.buildingtechnologies.siemens.com/bt/global/en/support/tools/Pages/hit.aspx Please contact your local Siemens BT sales organization for further information. They are glad to help you! Best regards, Albis |
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| 5/1/2016 8:27 PM | |
Joined: 4/21/2006 Last visit: 10/15/2024 Posts: 510 Rating:
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New question published by rammess is split to a separate thread with the subject Siemens DDC will store 10,000 Events?. Best regards |
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