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Voltage level for 4mA to 20 mA signal

Created by: Prasanna_Prasanna at: 1/23/2017 1:36 AM (1 Replies)

1/23/2017 1:36 AM	Rate (0)
Prasanna_Prasanna Experienced Member Joined: 7/27/2015 Last visit: 1/5/2025 Posts: 110 Rating: (2)	Hello everyone , I am using sinamics g120 with CU 240E,i just want to know how much voltage level should be maintained across the analog channel , when I have selected the analog input channel to be operated in 4mA to 20 mA. Because the analog channels are getting failed. Thank you

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1/24/2017 11:14 AM	Rate (0)
Technology Team Platinum Expert Joined: 10/11/2006 Last visit: 1/15/2025 Posts: 5984 Rating: (823)	Hello, the voltage level should be <10V and the current <80mA, see attachment. You can find that information in the technical data of the CU240E-2 https://support.industry.siemens.com/cs/ww/de/view/109482994/en If you have a wire-break fault, you have to make sure, that 4mA are detected on the AI. Otherwise if a current less than 4mA is measured a wire-break is detected. Attachment AI_4_20mA.png (76 Downloads)
	With best regards, Technology Team Application consulting and pre sales support for SINAMICS, SIMATIC Technology, SIMOTION, SIMOTICS and MOTION CONNECT
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