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Use the logo as a speedometer

Created by: AutoGen_2558162 at: 4/8/2025 7:45 AM (6 Replies)

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4/8/2025 7:45 AM	Rate (0)
AutoGen_2558162 Joined: 2/23/2025 Last visit: 12/16/2025 Posts: 116 Rating: (0)	Hello everyone, I’m trying to use a Siemens LOGO to count the number of rotations of a shaft using a nearby inductive sensor. Can the counter module also track the rotation speed (e.g., RPM)? Has anyone tried something similar? Thanks!
	Last edited by: U_3378aff2-642c-45d5-9055-2f33cad96971 at: 04/08/2025 07:46:15
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4/8/2025 9:41 AM	Rate (0)
ixo65 Grandmaster Joined: 12/18/2014 Last visit: 1/6/2026 Posts: 36412 Rating: (4546)	What speed are we talking about? 1500 rpm? 3000 rpm? Or something else?

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4/8/2025 11:09 AM	Rate (0)
AutoGen_2558162 Joined: 2/23/2025 Last visit: 12/16/2025 Posts: 116 Rating: (0)	ixo65 What speed are we talking about? 1500 rpm? 3000 rpm? Or something else? The maximum speed is 3600 rpm. Is there a way to capture this with rising front counters via logo?

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4/8/2025 5:10 PM	Rate (0)
ixo65 Grandmaster Joined: 12/18/2014 Last visit: 1/6/2026 Posts: 36412 Rating: (4546)	3600 rpm = 60 rps. For this you need a LOGO! with fast inputs. Which LOGO! have you exactly? Please write the complete order number of the LOGO!.

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4/8/2025 6:00 PM	Rate (1)
sevach Member Joined: 10/17/2018 Last visit: 1/6/2026 Posts: 60 Rating: (1)	Greetings. With permission from ixo65. Not all LOGO! 24s have high-speed inputs. Only the 12/24 RCE(o) and 24 CE(o). The 24 RCE does not have high-speed inputs. Please note that the high-speed counting inputs with a maximum resolution of 5 kHz are I3, I4, I5, and I6. The remaining inputs have a maximum resolution of 4Hz. Video link: https://www.youtube.com/watch?v=SXPUlmTzrXI I hope this helps guide you in your application.
	Last edited by: sevach at: 04/08/2025 18:40:53 Last edited by: sevach at: 04/08/2025 18:41:19
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4/8/2025 6:03 PM	Rate (0)
ixo65 Grandmaster Joined: 12/18/2014 Last visit: 1/6/2026 Posts: 36412 Rating: (4546)	sevach Please note that the high-speed counting inputs with a maximum resolution of 5 kHz are I3, I4, I5, and I6. The remaining inputs have a maximum resolution of 4 kHz. 4 kHz?

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This contribution was helpful to 1 thankful Users sevach

4/8/2025 6:34 PM	Rate (0)
sevach Member Joined: 10/17/2018 Last visit: 1/6/2026 Posts: 60 Rating: (1)	My apologies. 4HZ

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