Siemens SIMOTION D4x5-2 Commissioning And Hardware Installation Manual page 388

Diagnostics
9.1 Diagnostics via LED displays
If you cannot determine the cause, contact the Hotline and provide this code and the
diagnostics data.
RESET state (permanent RESET)
In the RESET state, the CPU of the D4x5-2 is in a permanent RESET, i.e.
● No software is running (D4x5-2 operating system is stopped) and
● The hardware is in a state that produces less power loss
This state occurs, for example, if the max. module temperature has been greatly
exceeded.
The state is displayed as follows:
● The RDY LED flashes red/yellow at 2 Hz
● The 7-segment display shows "8"
Possible measures:
● Correct the causes of any overtemperature.
● Ensure that the 24 V supply is stable without any power dips.
● Insert the fan/battery module.
The state can only be exited by switching the D4x5-2 off and on.
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Commissioning and Hardware Installation Manual, 03/2018, A5E33441636B
SIMOTION D4x5-2