Configuration
7-251
SHB9300CRV EN 2.0
7.7.3.3 Heatsink monitoring OH (fixed)
Purpose
Protects the controller.
MONIT
TEMP-COOLER
MONIT-OH
C0061
85
C
Fig. 7-196 Heat sink monitoring OH
Signal
Source Note
Name Type DIS DIS format CFG List Lenze
TEMP-COOLER - C0061 dec - - - assignment cannot be changed
MONIT-OH d - - - - - -
Function
The signal OH is derived from a comparator with hysteresis. The switch-off threshold is 85 Cand
cannot be changed. The hysteresis is also unchangeable and is 5 K, i.e. restart at 80 C.
Features:
l
LECOM no.: 50
l
Reaction: TRIP (unchangeable)
The activation of the monitoring can be caused by the following:
l
The ambient temperature is too high.
Remedy:
– Integrate fan into the control cabinet.
l
The controller is overloaded in the arithmetic mean, i.e. overload and recovery phase are
above 100%.
Remedy:
– Shorten overload phase
– Use controller with more power
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