13 what to do, if, What to do, if – JUMO 14597 safetyM STB/STW Ex - Safety Temperature Limiter and Safety Temperature Monitor Operating Manual User Manual
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13 What to do, if ...
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13 What to do, if ...
Description
Cause
Remedy
The following appears in
the display:
Setup program transmitting 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 and K2 are lit red.
The measured value flashes on 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 limit value over-
range or underrange.
h
If necessary, correct the limit value.
h
Reduce excessive hysteresis if applicable
as it may be too far into the valid range.
v
Chapter 8.3.3 "Limit value, hysteresis"
LED K1 is lit red
although the measured
value is in the valid range
The device is set as a safety temperature lim-
iter (STB).
Even if the measured value has already returned
to the valid range after an overrange, the relay of
a temperature limiter does not automatically re-
set.
It must be unlocked manually.
h
Press the
key for longer than 3 seconds
to manually unlock the relay.
v