Endress+Hauser Liquisys M CCM223 - Page 71

Liquisys M CCM223/253 Commissioning
Endress+Hauser 71
Coding Field Range of
adjustment
(factory settings
in bold)
Display Info
R233 Enter switch-off
temperature
50 °C
0 to 50 °C
R233
¡C
Off Value
50.0
A0002049-EN
Entering a switch-off point
selects either a Max contact
(switch-off point < switch-on
point) or a Min contact (switch-
off point > switch-on point),
thereby implementing a
hysteresis that is constantly
required (see "Illustration of the
alarm and limit functions"
figure).
R234 Enter pickup
delay
0 s
0 to 2000 s
R234
s
On Delay
0
A0002050-EN
R235 Enter dropout
delay
0 s
0 to 2000 s
R235
s
Off Delay
0
A0002051-EN
R236 Enter alarm
threshold (as
absolute value)
50 °C
0 to 50 °C
R236
¡C
A.Thresh
50.0
A0002052-EN
If the alarm threshold is
undershot/overshot, this
triggers an alarm with the error
message (E067 to E070) and
an error current at the
transmitter (note alarm delay
in field F3).
If defined as a Min contact, the
alarm threshold must be <
switch-off point.
R237 Display status
for limit
contactor
MAX
MIN
R237
LC State
MAX
A0002053-EN
Display only
R2 (4) Configure P(ID)
controller for
Cl
2
/ClO
2
PIDPV
R2
Function
PIDPV
A0002027-EN
PV = process value of main
measuring parameter
By confirming with ENTER,
another relay function already
switched on is switched off and
its settings are reset to the
factory settings.
R241 Switch function
of R2 (4) off or
on
Off
On
Basic
PID+B
R241
Function
Off
A0002054-EN
On = PID controller
Basic = basic load dosing
PID+B = PID controller + basic
load dosing
R242 Enter set point 500 ppb
0 to 20000 ppb
0.5 ppm
0 to 20 ppm
0.5 (0.1) mg/l
0 to 20 (5) mg/l
R242
mg/l
Setpoint
0.50
A0002057-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.