Siemens SIRIUS 3RK3 Equipment Manual page 255

LED response
SF-LED on cen‐ Input LEDs on central
tral unit unit or expansion mod‐
ule
-- The IN LEDs of a sensor
are flashing green.
The IN LEDs of a sensor
are off.
Note
SF on the expansion module lights up red
The cause of errors that result in a red-lit SF-LED on the expansion module are explained in
Chapter ""SF" on the expansion module lights up red (Page 256)."
Note
Response of IN LEDs
The way the IN LEDs flash depends on the signal that is present at the input:
• Input signal present: 1.75 s ON/0.25 s OFF
• Input signal not present: 0.75 s ON/1.25 s OFF
SIRIUS 3RK3 Modular Safety System
Equipment Manual, 07/2020, NEB926253002000/RS-AC/006
Sensor connected to responding IN
inputs
• Monitoring Universal
• EMERGENCY STOP
• ESPE
• Protective door
• Protective door with lock
• Safety shutdown mat with NC prin‐
ciple
• Safety shutdown mat with cross-cir‐
cuit principle
• Monitoring Universal
• EMERGENCY STOP
• ESPE
• Protective door
• Protective door with lock
• Safety shutdown mat with NC prin‐
ciple
Diagnostics / service
7.3 Diagnostics with LEDs
Meaning/Causes
• Startup test required
When startup test is parameterized,
this message is set at every change
to safety/test mode and at every
change from substitute value to re‐
al value and remains set until the
connected sensor is actuated at
least once. After the sensor has
been operated correctly this mes‐
sage is automatically reset.
• Safety sensor triggered
The safety sensor has been actu‐
ated. This message is automatically
reset if the value "1" is present for all
function inputs monitored (set as
part of configuring).
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