Siemens SIMOTION D4 5-2 Series Commissioning And Hardware Installation Manual page 88

Commissioning (hardware)
4.1 Requirements for commissioning
Fan/battery module defective or not mounted properly on a SIMOTION D4x5-2
While the SIMOTION D4x5-2 is powering up, a test is performed to check whether the
fan/battery module is functioning properly. If the fan/battery module is missing or faulty, the
kernel is not loaded and the RDY LED flashes red/yellow (2 Hz). Switch off the power supply
and correct the fault before switching on the power supply again.
If the SIMOTION D4x5-2 Control Unit needs to be cooled (thermostatically controlled fan)
and this is not possible due to a fan/battery module having been removed or being faulty,
the module state will change to reset after approximately 1 minute. This state can only be
reset with a switch-off.
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DANGER
Commissioning and Hardware Installation Manual, 02/2012
SIMOTION D4x5-2