Compact controller ER 2022S and ER 2022SA
12. Technical data
Alarm messages
Display Cause
Fault removal
test/repair/replace
Under range for the value being
displayed.
Is the medium being measured within the
range (too hot? too cold?)
Check probe for short-circuit and probe
break
Check the probe connection and the
terminals.
9999
(blinking!)
Overrange for the value being
displayed.
all displays on;
lower
7-segment
display is
Watchdog or power-on trigger
initialization (reset).
Replace the controller if the initialization
continues for more than 5sec.
PrOF
PROFIBUS error
Can be suppressed by setting the
PROFIBUS address to “0”.
OPt
Hardware configuration error
Check which option boards are installed in
the slots.
Overrange / under range covers the following events:
-
Probe break or short-circuit
-
Measurement is outside the controllable range for the probe that is connected
-
Display overflow