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Commissioning (hardware)
5.4 Fan
Fan faults are detected if through
● A cyclic fan test
● Or when the fan is switched on
a malfunction is detected (fan does not turn or fan turns at too low a speed).
Note
If the "redundant fan" is already defective in a double fan/battery module when the system is
powered up, this is detected as a single fan/battery module depending on the type of defect
(e.g. a wire breakage).
You should therefore also set the .fanexisting system variable to the "SINGLE" state to alert
the personnel operating the machine to the fact that no is redundancy available.
Diagnostic buffer entry
The diagnostic buffer entries have the following meanings:
● Fan on the module is defective
All of the fans in a fan/battery module have failed
● There is no redundant fan available
This message only occurs in the case of modules that support double fan/battery modules
with a redundant fan.
The message occurs:
– If it is only the redundant fan that has failed on a double fan/battery module or
– If a single fan/battery module is connected but the module also supports a double fan/
Requirement for/presence of a fan
System variables can be used to evaluate:
● Whether a fan is required for the operation of the device (or not)
● Whether a fan is installed (or not)
120
battery module in principle (this is only the case for D445‑1; with D4x5‑2, only double
fan/battery modules are permitted)
Commissioning and Hardware Installation Manual, 03/2018, A5E33441636B
SIMOTION D4x5-2
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