Fan/Battery Module - Siemens SIMOTION D4x5-2 Commissioning And Hardware Installation Manual

Commissioning (hardware)
5.4 Fan
5.4.2

Fan/battery module

A fan/battery module is always required for operation of the SIMOTION D4x5-2 Control Unit.
A corresponding module including a backup battery is therefore included in the scope of
delivery of the SIMOTION D4x5-2 Control Unit.
For increased availability a double fan/battery module is used as standard on SIMOTION
D4x5-2.
The double fan/battery module also guarantees sufficient cooling with just one functional fan.
If one of the fans fails, the remaining fan continues under full load. The fan failure is signaled
by the generation of an event in the PeripheralFaultTask. In this case it is strongly
recommended that the double fan/battery module is replaced at the next available opportunity.
Checks are performed during power-up to determine whether the double fan/battery module
on the SIMOTION D4x5‑2 Control Unit is functioning correctly (i.e. at least one of the two fans
is working). If a double fan/battery module is missing or faulty, the kernel is not downloaded
and the RDY LED flashes red/yellow (2 Hz). Switch off the power supply and eliminate the
fault. Then switch the power supply back on.
Note
If the SIMOTION D4x5‑2 needs to be cooled (fan switches on with temperature control) and
this is not possible due to a fan/battery module having been removed or being faulty, the
module state will change to the RESET state after approximately 1 minute (7‑segment display
shows "8"). This state can only be reset with a switch-off.
If only one fan in the double fan/battery module fails, the module is still regarded as functional,
although it should be replaced as soon as possible. If neither of the fans is working, the double
fan/battery module is identified as defective.
Fan test
Fan faults can only be detected by the control unit if the double fan is switched on (fan not
turning or turning too slowly).
To detect failure of a fan in good time, the Control Unit performs a fan test:
● The Control Unit runs a fan test on power-on (short switch-on of the double fan)
● During operation, the double fan is switched on briefly at cyclic intervals (even if not
necessitated by the temperature).
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Commissioning and Hardware Installation Manual, 03/2018, A5E33441636B
SIMOTION D4x5-2