Commissioning (hardware)
4.4 Fan
SIMOTION D4x5-2
Commissioning and Hardware Installation Manual, 02/2012
107
4.4.2 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 D445-2 DP/PN or D455-2 DP/PN 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 switches to RESET 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.
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