Endress+Hauser Liquisys M CCM223 - Page 73

Liquisys M CCM223/253 Commissioning
Endress+Hauser 73
Coding Field Range of
adjustment
(factory settings
in bold)
Display Info
R2411 Enter basic load 0 %
0 to 40 %
R2411
%
BasicLoad
0
A0002056-EN
When you select the basic load,
you enter the desired dosing
quantity.
100% basic load would
correspond to:
• Constantly on if R247 = len
• Fmax if R247 = freq (field
R249)
• 20 mA if R247 = curr
R2 (5) Configure P(ID)
controller for pH
PIDpH
R2
Function
PIDpH
A0002028-EN
By confirming with ENTER,
another relay function already
switched on is switched off and
its settings are reset to the
factory settings.
R251 Switch function
of R2 (5) off or
on
Off
On
Basic
PID+B
R251
Function
Off
A0002084-EN
On = PID controller
Basic = basic load dosing
PID+B = PID controller + basic
load dosing
R252 Enter set point pH 7.20
pH 4 to 9
R252
pH
Setpoint
7.20
A0002087-EN
The set point is the value to be
maintained by the control
system. Using this control
process, this value is restored
when an upwards or
downwards deviation occurs.
R253 Enter control
gain K
P
1.00
0.01 to 100.00
R253
Kp
1.00
A0002088-EN
See the "P(ID) controller" section
R254 Enter integral
action time T
n
(0.0 = no I-
component)
0.0 min
0.0 to 999.9 min
R254
min
Time Tn
0.0
A0002089-EN
See the "P(ID) controller" section
With every hold, the I-
component is set to zero.
Although the hold can be
deactivated in field S2, this
does not apply for Chemoclean
and timer!
R255 Enter derivative
action time T
v
(0.0 = no D-
component)
0.0 min
0.0 to 999.9 min
R255
min
Time Tv
0.0
A0002090-EN
See the "P(ID) controller" section
R256 Select controller
characteristic
Inv = inverse
Dir = direct
(Initial setting for
acid)
R256
Direction
dir
A0002091-EN
See the "P(ID) controller" section
This setting is required
depending on the desired
dosing direction (dosing above
or below the set point).