[?]: Auto Tuning of fb58 using pulse output

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reymond_craig
Posts: 139
Joined: Wed Sep 26, 2007 2:57 am
Location: Philippines

[?]: Auto Tuning of fb58 using pulse output

Post by reymond_craig » Sat Feb 20, 2010 4:04 pm

Good evening,
I just want to ask if someone already try doing auto tuning of temperature controller fb58 using pulse output only.
Most documentation from siemens describes auto tuning using the analog output.
I hope someone already succeed on doing auto tune by using only pulse output.
Thank you very much in advance

Coyote
Posts: 41
Joined: Wed Sep 06, 2006 10:07 am
Location: Slovenia

Re: [?]: Auto Tuning of fb58 using pulse output

Post by Coyote » Fri Apr 09, 2010 1:43 pm

I dont see very big difference between analog output and PWM output. Lag time of a process is usually much bigger than PWM period, so it doesn't affect the result-> it is almost equal to have a proprtional actuator.

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