17
Operation, alarm and test
Checking indication and functions of MIN / MAX output contacts
Operation
Activity
Display
Function
Conductivity between MIN and
MAX.
The actual value is shown on
the seven-segment display.
MIN and MAX LEDs are not
illuminated.
MIN output contact 16/18 open, 17/18 closed.
MAX output contact 21/23 open, 22/23 closed.
MIN alarm
Reading below MIN conductiv-
ity limit
MIN LED illuminated red
MIN output contact 16/18 closed, 17/18 open.
MAX alarm
Switchpoint "MAX conductiv-
ity" exceeded.
MAX LED illuminated red
MAX output contact 21/23 closed, 22/23 open.
Testing MIN alarm and MAX alarm
Activity
Display
Function
During operation:
Conductivity between MIN
and MAX.
Select parameter Test. Press
and hold down push-button.
Seven-segment display: Test
is flashing
MAX LED is illuminated red for
3 sec.
MAX output contact 21/23 closed, 22/23 open.
MIN and MAX LEDs not illumi-
nated for 1 sec.
MIN output contact 16/18 open, 17/18 open.
MAX output contact 21/23 open, 22/23 closed.
MIN LED is illuminated red for
3 sec.
MIN output contact 16/18 closed, 17/18 open.
Test finished, release push-
button. Seven-segment display:
Test is indicated.
Note: If you continue to hold down the push-button, a new test is started. You can
abort the test any moment by releasing the push-button.
Turn the rotary button until the actual value is shown.
If no operation is performed the actual value will be indicated automatically after 30 sec.
Fig. 5
MAX LED
red
MIN LED
red
Seven-segment
display
Rotary button with
integrated push-
button
5432
