Endress+Hauser Liquisys M CCM223, Operating Instructions Manual

Page: 65 / 124

Liquisys M CCM223/253 Commissioning
Hauser 65
R2410 Enter minimum
switch-on time t
ON
0.3 s
0.1 to 5.0 s
This field only appears if pulse length is
selected in R247.
R2411 Enter basic load
0 %
0 to 40 %
When you select the basic load, you enter
the desired dosing quantity.
100% basic load would correspond to:
– Constantly on for R247 = len
– F
max
at R247 = freq (field R249)
– 20 mA at R247 = curr
R2 (5)
Configure P(ID)
controller for pH
PIDpH
By confirming with ENTER, another relay
function already switched on is switched
off
R251
Switch function of
R2 (5) off or on
Off
On
Basic
PID+B
On = PID controller
Basic = basic load dosing
PID+B = PID cont basic load dosing
R252 Enter set point
pH 7.20
pH 4 to 9
The set point is the value to be maintained
by the control system. Using the control
process, this value is restored upwards or
downwards when a deviation occurs.
R253 Enter control gain K
p
1.00
0.01 to 20.00
See "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
See "P(ID) controller" section.
With every Hold, the I-component is set to
zero. Although 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
See "P(ID) controller" section.
R256
Select controller
characteristic
inv = inverted
dir = direct
(default for acid)
The setting is required depending on the
desired dosing direction (dosing above or
below setpoint, see "P(ID) controller"
section).
R257
Select pulse length
or pulse frequency
len = pulse length
freq = pulse frequency
curr = current output 2
Pulse length e.g. for solenoid valve, pulse
frequency e.g. for solenoid dosing pump,
see "Actuating signal outputs" section.
Curr = current output 2 can only be
selected if O2 = Contr.
Coding Field Setting range
(Factory settings, bold) Display Info
R2410
s
Min.PTime
0.3
R2411
%
BasicLoad
0
R2
Function
PIDpH
R251
Function
Off
R252
pH
Setpoint
7.20
R253
Kp
1.00
R254
min
Time Tn
0.0
R255
min
Time Tv
0.0
R256
Direction
dir
R257
Oper.Mode
len