Operation
EL6910 95Version: 1.4.1
4.17.1.1 LED indicators
Diagnostic LEDs
LED lit flashing off
Diag 1
(green)
Environment variables,
operating voltage and internal
tests are in the valid range
• If Diag2 flashes, a logic
error code applies
- Environment variables,
operating voltage and internal
tests are outside the valid
range
• If Diag2 flashes, an
environment error code
applies
Diag 2
(red)
Together with Diag 3 and 4:
Global shutdown
1)
has
occurred. (see diag history of
the TwinSAFE components)
Logic or environment error
code according to Diag1 and
tables below is output
Together with Diag 3 and 4:
Global fault
1)
has occurred. (see
diag history of the TwinSAFE
components)
Diag 3
(red)
Global fault or global shutdown
on µC1
1)
- No global fault or global
shutdown on µC1
1)
Diag 4
(red)
Global fault or global shutdown
on µC2
1)
- No global fault or global
shutdown on µC2
1)
1. A global fault permanently disables the TwinSAFE component, so that it has to be replaced. A global
shutdown temporarily disables the TwinSAFE component. The error can be reset by switching off and
back on again.
Logic error codes of LED Diag2 (if LED Diag1 is lit)
Flashing
Code
Description
1 Function block error in one of the TwinSAFE groups
2 Communication error in one of the TwinSAFE groups
3 Error combination: Function block and communication
4 General error in one of the TwinSAFE groups
5 Error combination: General and function block
6 Error combination: General and communication
7 Error combination: General, function block and communication
Environment error codes of LED Diag2 (if LED Diag1 is off)
Flashing
Code
Description
1 Maximum supply voltage µC1 exceeded
2 Supply voltage µC1 below minimum value
3 Maximum supply voltage µC2 exceeded
4 Supply voltage µC2 below minimum value
5 Maximum internal temperature exceeded
6 Internal temperature below minimum value
7 Valid temperature difference between µC1 and µC2 exceeded
8 not used
9 not used
10 General error
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