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NPN inputs

Created by: Tomy Master at: 8/2/2010 10:45 AM (2 Replies)

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8/2/2010 10:45 AM	Rate (0)
Tomy Master Gold Member Joined: 5/4/2009 Last visit: 11/23/2024 Posts: 914 Rating: (40)	Dear experts... Does the LOGO! 12/24 accept NPN signal on its inputs? Regards. Tomy.
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8/2/2010 10:35 PM	Rate (0)
Toeternietoe Platinum Member Joined: 12/27/2006 Last visit: 11/29/2024 Posts: 1197 Rating: (113)	Yes, only if you use 24 (or 12) V DC power for the LOGO. If you use a 2 wire NPN then you must place a resistor between the input and ground. I think aproxemaly 1000 Ohms.

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8/3/2010 9:46 AM	Rate (1)
Fux Posts: 661 Rating: (123)	Only the LOGO! 24RC(o) has NPN inputs. See: http://support.automation.siemens.com/WW/view/en/36051989 Page 249 Digital inputs - optional P action or N action Also the expansion module DM8 24R has this option.
Fux Posts: 661 Rating: (123)
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