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Created by: kiran p at: 8/9/2012 11:35 AM (3 Replies)

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8/9/2012 11:35 AM	Rate (0)
kiran p Posts: 86 Rating: (2)	Hi I am using Sinamics G120 drive with CU230P-2 HVAC. I have two analog inputs PT1000. I want to give speed point as average of these two PT1000 inputs. If one PT1000 is giving 400 rpm and another is giving 300 rpm. I want to give average of these two i.e. (400+300)/2 = 350 rpm as a set point. But in set point we can give only one PT1000 as a set point. How to give average of these two.
kiran p Posts: 86 Rating: (2)
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8/9/2012 11:58 AM	Rate (0)
Technology Team Platinum Expert Joined: 10/11/2006 Last visit: 1/15/2025 Posts: 5984 Rating: (823)	Hello, The CU230P contains the function called "Free function blocks". These blocks contain standard logic operations and some math operations like "ADD" or "DIV". If you just want to make an average value from two analog signals you could try to make an addition and a division using these blocks. http://support.automation.siemens.com/WW/view/de/62089662/0/en
	With best regards, Technology Team Application consulting and pre sales support for SINAMICS, SIMATIC Technology, SIMOTION, SIMOTICS and MOTION CONNECT
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8/13/2012 9:03 AM	Rate (0)
kiran p Posts: 86 Rating: (2)	I have given speed set point using PT1000, I want to make drive on without giving any digital ON command. Is it possible?. If it is possible, what parameter setting is needed for that.
kiran p Posts: 86 Rating: (2)
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8/13/2012 10:12 AM	Rate (0)
Technology Team Platinum Expert Joined: 10/11/2006 Last visit: 1/15/2025 Posts: 5984 Rating: (823)	Hello, It is not possible to enable the drive without at least one signal change (OFF1). You have several possibilities to create so a signal change over for example digital input or using a bus communication to a plc.
	With best regards, Technology Team Application consulting and pre sales support for SINAMICS, SIMATIC Technology, SIMOTION, SIMOTICS and MOTION CONNECT
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