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Motion sensor

Created by: jonjon13 at: 8/18/2009 2:57 PM (10 Replies)

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8/18/2009 2:57 PM	Rate (0)
jonjon13 Posts: 77 Rating: (1)	Hi guys, I want to ask if I can use my motion sensor 16vdc and be my input to my LOGO 230rc model. Please see attached specification for motion sensor and how it will be wire to my LOGO device. see attachment 1 & 2. Many Thanks. jonjon13 Attachment 1.jpg (407 Downloads)
jonjon13 Posts: 77 Rating: (1)
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8/18/2009 2:58 PM	Rate (0)
jonjon13 Posts: 77 Rating: (1)	attachment no. 2 Attachment 2.jpg (372 Downloads)
jonjon13 Posts: 77 Rating: (1)
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8/18/2009 3:32 PM	Rate (0)
Fux Posts: 661 Rating: (123)	No, you can´t. For a 16VDC sensor you would need a 12/24V LOGO! A LOGO! 230RC needs >79V AC/DC for a 1-signal at the inputs. This you can find in the technical data of the manual.
Fux Posts: 661 Rating: (123)
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8/18/2009 4:15 PM	Rate (0)
jonjon13 Posts: 77 Rating: (1)	thank you sir. jonjon13
jonjon13 Posts: 77 Rating: (1)
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8/26/2009 7:12 PM	Rate (0)
bmwbykrydr Posts: 16 Rating: (2)	Could you use a 16VDC relay to send a 120V/230V signal to the LOGO230? Don
bmwbykrydr Posts: 16 Rating: (2)	Last edited by: CS Moderator at: 8/27/2009 11:36 PM new subject after splitting
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8/28/2009 3:07 AM	Rate (0)
rosa Posts: 191 Rating: (58)	Hi!! the coil voltage of your relay doesnt matter for the LOGO!.. what it matters is the voltage you apply to the LOGO! input... ROSA
rosa Posts: 191 Rating: (58)
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8/28/2009 1:08 PM	Rate (0)
bmwbykrydr Posts: 16 Rating: (2)	I realize that. I'm saying to use the relays between the motion sensor output and the LOGO input. He's got to have 120/230 for the LOGO, then use the motion sensors 16VDC output to a 16VDC coil relay to send a 120/230VAC signal to the inputs. Of course you'd have to supply each component with what ever voltage it needs. The motion sensor has to be closing a contact somewhere when it senses motion, right? Don
bmwbykrydr Posts: 16 Rating: (2)
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8/28/2009 3:30 PM	Rate (0)
LOGO!Barbarian Posts: 173 Rating: (95)	Most applications use a relay on the output side, but your solution will work. 1) if you use the 16 VDC output of the Motion Sensor to close a coil then this will work if the power that the Motion Sensor puts out when it triggers is enough to close the coil. 2) The signal from the Motion Sensor to the coil must also be a fast enough transision that the coil does not 'bounce' or 'chatter' - it must be a good clean rising edge (check the Motion Sensor out put specs and a selected relay specs) 3) The relay must be supplied on one side with the same AC supply voltage as the LOGO! (also on the same phase to be more careful!) 4) The relay does not have to be big, the smaller the better. YOu need just enough of the AC voltage for the LOGO! to detect the signal. This also means that the coil holding this relay closed also does nto need much power, which comes back to the consideration in (1) above. 5) the last thing that you have to take into account is the speed that the motion sensor output could change, because this will have an effect on how well the realy in between reacts or wears out after 100 000 operations or so. 6) Putting a realy between a sensor and a control device also introduces a small delay, but for this application I do not think that it will be a problem. Happy circuiting! Aaaaaarrrggh!
LOGO!Barbarian Posts: 173 Rating: (95)
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9/3/2009 3:45 PM	Rate (0)
bmwbykrydr Posts: 16 Rating: (2)	The moderator broke my answer off to a new thread for some reason. See my post titled, "Could you use a 16VDC relay to send a 120V/230V signal to the LOGO230?" You can do what you want to do, just takes a few extra components. Don
bmwbykrydr Posts: 16 Rating: (2)
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9/4/2009 8:42 AM	Rate (0)
O_Moderator Diamond Member Joined: 4/24/2009 Last visit: 8/20/2024 Posts: 2682 Rating: (135)	Hello bmwbykrydr, sorry for the mistake. I now putted the posts back to this thread. Best regards O_Moderator
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