Diagnostics 
  8.1 Diagnostics via LED displays 
SIMOTION D4x5-2 
Commissioning and Hardware Installation Manual, 02/2012 
353 
7-segment display   
The 7-segment display provides further status information in addition to the LED displays. 
Table 8- 2  States of the 7-segment display 
State  Meaning 
8  Module in the RESET state 
(RESET button pressed; overtemperature; faulty/disconnected fan/battery 
module) 
8. 
(Middle segment of 
the "8" flickers) 
Power-up of the SIMOTION D4x5-2 has failed 
Possible cause: Incorrect boot loader on the CompactFlash card 
F  F state (FAULT)  
In the F state, the CPU of the D4x5-2 is in HOLD state, i.e. no software is 
running (D4x5-2 operating system is stopped) 
6  SIMOTION D has powered up 
Flashing point  Communication is taking place between SIMOTION and SINAMICS 
Integrated 
Special operating modes 
The following "special operating modes" are displayed via the status LEDs and the 
7-segment display.  
F state (FAULT) 
In the F state, the CPU of the D4x5-2 is in HOLD state, i.e. no software is running (D4x5-2 
operating system is stopped).  
The state occurs with faults to which the D4x5-2 operating system cannot respond.  
The state is displayed as follows: 
●  All LEDs flicker red and 
●  The 7-segment display shows "F" 
Possible measures: 
●  Check the CompactFlash card. 
●  Perform a commissioning again. 
●  Correct any overtemperature. 
●  Replace the D4x5-2. 
The state can only be exited by switching the D4x5-2 off and on. 
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.