ProMinent DULCOMETER D1C Operating Instructions Manual page 24

Complete Operating Menu / Description
Control
Access to all setting menus can be blocked with an access code !
Note:
Only with control
control
settings ?
Control
Setpoint
Control parameter xp
Control parameter Ti
Control parameter Td
Additional load
Manual metering
Abbreviations for control variables:
x = 100 %/Kp (inverse proportional coefficient)
p
T = I controller integration time [s]
i
T = D controller differential time [s]
d
24
The control variable is recalculated every second. Only
suitable for process with time constants greater than 30 s !
control
regulated value:
positive chlor
negative Dechlor
control
normal
current regulat.
value: 30 %
Possible values
Initial value Increment
normal normal
with dead zone
manual
1.00 ppm 0.01 ppm
10 % 1 %
off 1 s
off 1 s
0 % 1 %
0 % 1 %
Positive values of control variable: chlorine
Negative values of control variable: Dechlorine
For normal control
setpoint
1.00 ppm
Control with dead zone
setpoint 2 upper
1.20 ppm
setpoint 1 lower
1.00 ppm
For manual control
manual dosing
15 %
regulated range
Lower value Upper value
Lower measure- Upper measure-
ment range ment range
limit limit
1 % 500 %
1 s 9999 s
1 s 2500 s
-100 % +100 %
-100 % +100 %
(chlorine destruction)
Proportional control
ctrl. parameter
10 %
xp =
PID control
ctrl. parameter
xp =
10 %
0 s
Ti =
Td = 0 s
additional load:
10 %
regulated range
D1C2-Cl-026-GB
Remarks
When controlling with dead zone,
the feed forward control is not
used for measured values within
the dead zone.
2 setpoints necessary for
control with dead zone.
Setpoint 1 < setpoint 2
xp referred to measuring range
Function off = 0 s
Function off = 0 s