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Input volt value

Created by: sludge at: 7/14/2009 6:24 PM (5 Replies)

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7/14/2009 6:24 PM	Rate (0)
sludge Posts: 9 Rating: (0)	I have a 12/24 LOGO! with digital and analog inputs. What is the minimum voltage value to register a valid digital input?
sludge Posts: 9 Rating: (0)
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7/14/2009 7:29 PM	Rate (0)
cdrshort Bronze Member Joined: 9/6/2008 Last visit: 3/29/2024 Posts: 134 Rating: (16)	singal status = 0 < 5v or less singal status = 1 > 8v or greater logo manual edition 05/2006 page 32
	http://electrotech-techblogg.blogspot.gr/
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7/15/2009 12:41 AM	Rate (0)
sludge Posts: 9 Rating: (0)	Ok for a 12/12RC singal status [1] input must be greater than 8.5v, what is the maximum DC voltage value allowed? I would like to use 24vdc as a digital input and concerned it may exceed rated input. Jeff
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7/15/2009 3:15 AM	Rate (0)
rosa Posts: 191 Rating: (58)	Hi 12/24 LOGO! does accept 24V at any input... ROSA
rosa Posts: 191 Rating: (58)
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7/15/2009 7:19 AM	Rate (0)
Andres [Str] Posts: 153 Rating: (17)	Hi, sludge You find parametrs of Input volt value in file. Attachment Tech_data_Logo!12_24_str.pdf (370 Downloads)
Andres [Str] Posts: 153 Rating: (17)
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7/15/2009 11:13 AM	Rate (0)
Helmut_13 Posts: 2930 Rating: (432)	Hi, here a trick to detect digital signals below the limit: If you need to detect 3V for example then with a digital input it is not possible. In such cases you can use a analog input and connect it to a analog threshold trigger. Set the Threshold ON to 30 (30 = 3V at 0..10V Sensor). Do not forget to set the Threshold OFF to right value (hysteresys) otherwise it will toggle all the time. Here an example to detect 3V signals. Hope this helps Attachment 3VDC Signals detection.jpg (374 Downloads)
Helmut_13 Posts: 2930 Rating: (432)
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