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Topic: Digital controller: how to programm it?  (Read 5902 times)

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Offline Black_Forest

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Digital controller: how to programm it?
« on: November 06, 2006, 12:41:39 AM »
Hi!

I have to use a Honeywell-Mellen controller UDC 3200.
To heat up to 1000°C with 5°/C min.
I was programming as follwing:
SRAMP
Time:250
EU/HR: 8500
GAIN: 60.0

but is is still fast heating ?
Have you any idea how to do it?

Thank you in advance!
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Offline Donaldson Tan

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Re: Digital controller: how to programm it?
« Reply #1 on: November 06, 2006, 07:07:32 AM »
Is this a Propotional (P), Proportional-Integral (PI) or a Proportional-Integral-Derrivative (PID) controller?

PID should not be used if your input stream has a lot of fluctuations. PID Controllers tend to maximise the extent of fluctuations.
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Offline Black_Forest

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Re: Digital controller: how to programm it?
« Reply #2 on: November 06, 2006, 12:35:32 PM »

Still I have a problem because I want to set 5^C/min and is very fast heating,
It seems that does not follow the rapm rate.

I was progamming as following:

ENABLE SPRAMP

250
time min

950
final set point

enable
PSRATE

8500
eu/hr up

8500
eu/hr dn

from tuninng
60.0
gain


Thank you in advance,
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