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SCALE UNSCALE Ananlog Output Voltage with G120C HELPPPP

Created by: leonlai909 at: 9/28/2013 9:40 PM (2 Replies)

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9/28/2013 9:40 PM	Rate (0)
leonlai909 Posts: 26 Rating: (0)	Hi folk, Recently I do Unscale for 4-20mA by download the Function from this website, Question is, I want to control G120C by 0-10V so that instead of using the Unscale FC for 4-20ma look like it works for unscale 0-10V right ?? Because it is both unscale NORM_X to 5530-27648 !!???? But the thing is when I use unscale 0-10 like this, G120C only read about less than 10V (read by Starter), When I put NORM_X scale up to 150,000 then G120C can reach 460V (read by Starter) I have no clue what I do wrong ??
leonlai909 Posts: 26 Rating: (0)
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9/30/2013 12:12 PM	Rate (0)
Denilson Pegaia Diamond Expert Joined: 9/23/2005 Last visit: 1/15/2026 Posts: 4447 Rating: (1487)	Hi, to scale 0-10V I suggest you use Scale and Unscale (it stay on convertion blocks menu tree for s7-300/400/1500) or at/tf/WW/en/Posts/31698#top (for S7-1200)
	Denilson Pegaia Siemens Industry Sector Technical Support
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9/30/2013 2:43 PM	Rate (0)
0_Einstein Grandmaster-Expert Joined: 7/7/2010 Last visit: 1/15/2026 Posts: 16371 Rating: (2522)	leonlai909 Hi folk, Recently I do Unscale for 4-20mA by download the Function from this website, Question is, I want to control G120C by 0-10V so that instead of using the Unscale FC for 4-20ma look like it works for unscale 0-10V right ?? Because it is both unscale NORM_X to 5530-27648 !!???? But the thing is when I use unscale 0-10 like this, G120C only read about less than 10V (read by Starter), When I put NORM_X scale up to 150,000 then G120C can reach 460V (read by Starter) I have no clue what I do wrong ?? What value is set in your drive as the max Hz? Is it the same as rated Hz? The analog input is 0-10V : 0-Max Hz. If you manually move a specific value of counts to the analog output, does the drive give the proper speed according to 0-27648 counts = 0-Max Hz = 0-Max RPM?
	science guy
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