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PT100 question - connect it with logo 0ba7 12/24 dc direct

Created by: rajinder at: 8/25/2014 7:48 AM (8 Replies)

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8/25/2014 7:48 AM	Rate (0)
rajinder Posts: 4 Rating: (0)	hello friend i have a pt100 and want to connect it with logo 0ba7 12/24 dc direct without expention module.can anybody help me.
rajinder Posts: 4 Rating: (0)	Last edited by: CS Moderator at: 8/26/2014 7:51 AM new subject after splitting from /tf/WW/en/Posts/33290#top
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8/25/2014 7:55 AM	Rate (0)
Ste39 Platinum Member Joined: 1/21/2013 Last visit: 11/20/2024 Posts: 4620 Rating: (709)	rajinder hello friend i have a pt100 and want to connect it with logo 0ba7 12/24 dc direct without expention module.can anybody help me. Hello rajinder, As far as I know you can't, you need a converter PT100 ---> 0..10V

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8/25/2014 8:04 AM	Rate (0)
rajinder Posts: 4 Rating: (0)	its value is fluctuating between 0 to 36
rajinder Posts: 4 Rating: (0)
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8/25/2014 8:09 AM	Rate (0)
Ste39 Platinum Member Joined: 1/21/2013 Last visit: 11/20/2024 Posts: 4620 Rating: (709)	rajinder its value is fluctuating between 0 to 36 Hello Does it say 0 to 36? Explain to us what you want to do better, you have connected the PT 100 to the analog input of the LOGO! ? Does not work

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This contribution was helpful to 1 thankful Users Miguel viloria

8/25/2014 8:18 AM	Rate (0)
rajinder Posts: 4 Rating: (0)	i connect the red wire of pt100 to 5v supply and one white wire to -ve of the supply and second white wire to Al1 of 0ba7 and i obtain a fluctuating value. can it become stable
rajinder Posts: 4 Rating: (0)
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8/25/2014 8:25 AM	Rate (0)
Ste39 Platinum Member Joined: 1/21/2013 Last visit: 11/20/2024 Posts: 4620 Rating: (709)	rajinder i connect the red wire of pt100 to 5v supply and one white wire to -ve of the supply and second white wire to Al1 of 0ba7 and i obtain a fluctuating value. can it become stable Hello rajinder, Take a look: Manual wrote pag.51: Analog inputs: I1 and I2, I7 and I8: The inputs I1, I2, I7 and I8 of LOGO! versions 12/24RCE/RC/RCo, 24/24o and 24C/24Co can be used as either digital inputs or analog inputs. The input mode is defined in the LOGO! circuit program. The inputs I1, I2, I7 and I8 provide digital inputs, and the inputs AI3, AI4, AI1 and AI2 provide analog inputs, as described in the topic "Constants and connectors - Co (Page 138)". AI3 corresponds to the input terminal I1; AI4 corresponds to I2; AI1 corresponds to I7; AI2 corresponds to I8. The use of AI3 and AI4 is optional. You configure your LOGO! to use either two or four analog inputs as described in topic "Setting the number of AIs in the LOGO! Basic (Page 299)" in Section 5.2.4. When using inputs I1, I2, I7 and I8 as analog inputs, only the range from 0 to 10 V DC is available. Note The LOGO! AM2 expansion module provides additional analog inputs. The LOGO! AM2 PT100 expansion module provides PT100 inputs. You cannot use PT100 directly to LOGO! analog input !!!!
	Last edited by: Ste39 at: 8/25/2014 8:27 AM
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8/25/2014 8:30 AM	Rate (0)
rajinder Posts: 4 Rating: (0)	r you sure sir that i can not connect a pt100 direct to logo
rajinder Posts: 4 Rating: (0)
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8/25/2014 8:47 AM	Rate (0)
Ste39 Platinum Member Joined: 1/21/2013 Last visit: 11/20/2024 Posts: 4620 Rating: (709)	rajinder r you sure sir that i can not connect a pt100 direct to logo Hello rajinder, Havea look what Helmut said: am2rtd to logo! 0ba7

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11/30/2016 3:41 PM	Rate (0)
Min_Moderator Platinum Member Joined: 9/3/2014 Last visit: 3/13/2019 Posts: 4766 Rating: (122)	New question published by mattman110 is split to a separate thread with the subject Temp sensor that can be directley conected to the logo! 8 using 12volts DC?. Best regards Min_Moderator

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