Abbreviations For Control Variables:; Complete Operating Menu; Description - ProMinent DULCOMETER D1C Operating Instructions Manual

Restricted Operating Menu / Description
Control
Access to all setting menus can be blocked with an access code !
Note:
Only with control
control
settings ?
Setting in
complete
operating
menu
Setpoint
Control parameter xp
Control parameter Ti
Control parameter Td
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
12
The control variable is recalculated every second. Only
suitable for processes with time constants greater than 30 s !
control
regulated value:
positive chlor
negative dechlor
control
normal
current regulat.
variable: 30 %
or
control
with dead zone
current regulat.
value: 30 %
or
control
manual
current regulat.
value: 30 %
Possible values
Initial value Increment
1.00 ppm 0.01 ppm
10 % 1 %
off 1 s
off 1 s
0 % 1 %
Positive values of control variable:
Negative values of control variable:
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 limit upper limit
measuring range measuring range
1 % 500 %
1 s 9999 s
1 s 2500 s
-100 % +100 %
Chlorine
Dechlorine
Proportional control
ctrl. parameter
10 %
xp =
PID control
ctrl. parameter
xp = 10 %
0 s
Ti =
Td = 0 s
D1C2-Cl-015-GB
Remarks
2 setpoints necessary
for control with dead zone.
Setpoint 1 < setpoint 2
See page 17 for setting
measuring range
xp referred to measuring range
Function off = 0 s
Function off = 0 s