Endress+Hauser Liquisys M CCM223 - Page 70

Commissioning Liquisys M CCM223/253
70 Endress+Hauser
Coding Field Range of
adjustment
(factory settings
in bold)
Display Info
R223 Enter the switch-
off point of the
contact
pH 9
pH 4 to 9
1500 mV
0 to 1500 mV
R223
pH
Off Value
9.00
A0002042-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).
R224 Enter pickup
delay
0 s
0 to 2000 s
R224
s
On Delay
0
A0009077-EN
R225 Enter dropout
delay
0 s
0 to 2000 s
R225
s
Off Delay
0
A0009078-EN
R226 Enter alarm
threshold (as
absolute value)
pH 9
pH 0 to 9
1500 mV
0 to 1500 mV
R226
pH
A.Thresh
9.00
A0005998-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.
R227 Display status
for limit
contactor
MAX
MIN
R227
LC State
MAX
A0009080-EN
Display only
R2 (3) Configure limit
contactor for
temperature
LC °C = limit
contactor T
R2
Sel.Type
LC ¡C
A0009061-EN
By confirming with ENTER,
another relay function already
switched on is switched off and
its settings are reset to the
factory settings.
R231 Switch function
of R2 (3) off or
on
Off
On
R231
Function
off
A0009081-EN
Any settings made for the limit
contactor are not deleted if the
function is switched off.
R232 Enter switch-on
temperature
50 °C
0 to 50 °C
R232
°C
On Value
50.0
A0006003-EN
Never set the switch-on point
and the switch-off point to the
same value!