September 25, 2021, 02:53:24 PM
Forum Rules: Read This Before Posting


Topic: Digital controller: how to programm it?  (Read 4651 times)

0 Members and 1 Guest are viewing this topic.

Offline Black_Forest

  • Regular Member
  • ***
  • Posts: 19
  • Mole Snacks: +0/-1
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!
Without adventure civilization is in full decay.
- Alfred North Whitehead

Offline Donaldson Tan

  • Editor, New Asia Republic
  • Retired Staff
  • Sr. Member
  • *
  • Posts: 3178
  • Mole Snacks: +261/-13
  • Gender: Male
    • New Asia Republic
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.
"Say you're in a [chemical] plant and there's a snake on the floor. What are you going to do? Call a consultant? Get a meeting together to talk about which color is the snake? Employees should do one thing: walk over there and you step on the friggin� snake." - Jean-Pierre Garnier, CEO of Glaxosmithkline, June 2006

Offline Black_Forest

  • Regular Member
  • ***
  • Posts: 19
  • Mole Snacks: +0/-1
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,
Without adventure civilization is in full decay.
- Alfred North Whitehead

Sponsored Links