12 what to do, if, What to do, if – JUMO 701150 14597 safetyM STB/STW - Safety Temperature Limiter and Safety Temperature Monitor Operating Manual User Manual
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12 What to do, if ...
107
12
What to do, if ...
Description
Cause
Remedy
The following appears in
the display:
Setup program transmits data.
The monitoring function switches off briefly dur-
ing data transmission and the device re-starts.
-
Wait until data transmission has finished.
The
measured
value
flashes in the top display.
The device is in the alarm range
LEDs K1, K2 are lit red.
The measured value flashes in the display and is
higher or lower than the limit value depending on
the switching behavior set.
-
Measured value too high or too low
-
Excessive deviation between the
temperature values during difference moni-
toring
h
Check the limit value in the configuration
level.
h
Find out the reason for the overrange or un-
derrange.
h
If necessary, correct the limit value
h
If necessary, reduce an excessive hysteresis
because it might be too high in the OK
range.
v
Chapter 7.7.3 "Operating hours"
LED K1 is lit red,
although the measured
value is in the OK range
The device is set as a safety temperature lim-
iter (STB).
Even if the measured value is already in the OK
range after being exceeded, the relay of an auto-
matic reset temperature limiter does not auto-
matically reset.
It must be unlocked manually.
h
Press the
key for longer than 3 seconds
to manually unlock the relay.
v
Chapter 5.5 "Alarm acknowledgement