Hi,

as I am in a similar situation like the requester before I would like to ask if anyone has practical experience with PWM output frequency of transistor outputs of LOGO.

How many Hz are realistically achievable?

And is the ouput frequency depending on the complexity of the application e.g. how many function blocks are used?

Unfortunately I currently only have LOGOs with relay outputs here.

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Split from Creating PWM output with Logo8.

Hello. The LOGO is not the right tool for that task. There are other (not Siemens) brands that looks similar to the LOGO that can do what you ask. Else look into PLCs like S7-200, S7-200 SMART, S7-1200 for "budget in mind" applications. Cheers.

UPDATE

Hi Rol8

In the past I used the PWM option in Logo, This only for controlling a heater with a solid state relais. The periodic time (the sum of times high and low signal) won't be shorter then 1 second. So your asked frequency will be 1Hz. For the heating in my case it worked properly. What do you want to do with the PWM?

Rick

New question published by vin agu is split to a separate thread with the subject Need to use LOGO to control an Induction Furnace between 4KHz and 8KHz.

Best regards
Jen_Moderator

New question published by vin agu is split to a separate thread with the subject Need to control an Induction Heater between 4KHz and 8KHz analog inputs and digital outputs with Logo.

Best regards
Jen_Moderator