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Dear control gurus,
I need the UDC6300 confiuration for boiler drum level control. It is a big story. The original configuration done by the commissining engineer was not correct and he did not connect external hardware properly and he had connected both steam and fee water flow in one circuit and messed up.

Even the configuration was wrong. I have never configured UDC 6300 before, I tried for some time but it was not responding well. The feed watr valve was opening with increase in feed water flow. so I had to put a RTK 3 element controller for time being but I want to put back 6300. Now I have connected all the inputs properly. That is feed water flow (input 1) in loop1 and the level( input 2) in loop 2 and Steam flow(input 3) as a feed forward summer.The algoritham is on cascade.

I want to give you my configuration record so that u can check what i have done is correct. Hope u have the manual for UDC 6300.

ALGORITHM
loop rate- 19 X 23X
control alg -PID A
pid loops -cascade
cont 2 alg pid A
in alg1 -none
in alg 2-ff sum2
alg2 inA -input 3 (steam flow)
alg2 inB -loop2 output
alg2 inC -none
8SEG CHAR, 8seg cha2,poly nom,totalizr -disable

ADV MATH- NOT USED

OUT ALG - CURRENT

INPUT 1 ( feed water flow)
Xmitter1 -liner ( should be linear or sq rt?)
in1 hi-28
in1 lo 0
ratio - 1
bias-0
filter- 1

INPUT 2 (level)
Xmitter1 -liner(should be linear or sq rt?)
in1 hi- +150
in1 lo (-150)
ratio - 1
bias-0
filter- 1

INPUT 3 (Steam flow)
Xmitter1 -liner (should be linear or sq rt?)
in1 hi-28
in1 lo 0
ratio - 1
bias-0
filter- 10

CONTROL ( I hope this is for loop 1,feed water flow)

pv source IN1
pid sets - 1
lsp -1
autobias- disable
sp track -none
pwr mode- A or M sp
sp hi- 28
sp lo -0
action -Reverse
outrate -enable
the rest are factory settings

CONTROL2 ( The level+feed forward algoritm)

pv2 source IN2
pid sets - 1
lsp -1
rsp source- none
autobias- disable
sp track -none
sp hi- 80
sp lo -0
action -direct
outrate -enable
the rest are factory settings

Any other settig is needed? The boiler steam emad is very widly fluctuatig load and so the feed water respose should be good and within 10 mm drum level range.

The boiler is 25 bar with a steam flow varying between 14t to 20t/h.

Pl check and let me know the confign is correct. Is it necessary to use the math functions and 8segs ?