Alarm Messages - nVent RAYCHEM TCON-CSD/20 Notice De Mise En Service

7

ALARM MESSAGES

The following alarm messages can be shown in the temperature display:
Error message Cause
Display overrun
The measured value is too
large and outside the range.
Display underrun
The measured value is too
small and is outside the range.
Time for switch-on delay after
power-on has elapsed.
With display over/underrun, the
switch-on delay becomes
ineffective.
Value has fallen below the low
alarm limit
Value has gone above the high
alarm limit
Elimination
• Check sensor and connecting cable for damage
or short-circuit
• Check whether the correct sensor has been set or
connected
Chapter 4 "Commissioning the instrument"
These messages are only output to the temperature
display.
* Cancel switch-on delay with
* Depending on the controller type, check whether the heating
or cooling unit functions faultlessly.
* Check whether the installed relay fuse is still in good working
order.
The alarm disappears as soon as the process value goes above or below
the AL limits by the amount of the hysteresis.
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