Operation
EL2912
39
Version: 1.0.0
4.5
Diagnostics
4.5.1
Status LEDs
Fig. 28: EL2912 - Status and diagnostic LEDs
LED
Color
Description
Output 1
green
Status and error display for the respective output
LED lights up: Output/error is set
LED not lit: Output is not set or there is no error
Error 1
red
Output 2
green
Error 2
red
4.5.2
Diagnostic LEDs
LED
lit
flashes
off
Diag 1
(green)
Environment variables,
operating voltage and
internal tests are in the valid
range
• If Diag 2 flashes, a logic
error code applies
-
Environment variables, operating
voltage and internal tests are
outside the valid range
• If Diag 2 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)
Diag Out
(red)
Module error in the output
module
-
No error in the output module
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.