7.3.2 LEDs on the modules
7.3.2.1 Displays on the 3RK3 Basic central unit
LED Display Explanation
DEVICE o No voltage, undervoltage, overvoltage
green Device OK, user program in safety mode
green ashing
0.5 Hz (ratio 1:1)
System power-up
ickering green Device OK, user program in test mode
yellow User program stopped; (conguring mode; conguration not released;
conguration missing)
yellow ashing
0.5 Hz (ratio 1:1)
Factory settings restored
ickering yellow See Chapter "Restoring factory settings (Page 347)"
red System stop (e.g. wiring error)
The system stop can only be exited by means of a restart after switching
the power supply o and on. If the fault is still present after the system
has restarted, you must replace the 3RK3 central unit.
red ashing
0.5 Hz (ratio 1:1)
Error in conguration
(e.g. wrong expansion module congured)
ickering red See Chapter "Restoring factory settings (Page 347)"
SF o No group error
red Group fault
1)
that requires acknowledgment
(wiring, communication, parameterization or conguration error)
red ashing
0.5 Hz (ratio 1:1)
Self-acknowledging group fault (logic error)
(e.g. discrepancy time violation, violation of a signal sequence)
IN1, IN2,
IN3, IN4,
IN5, IN6,
IN7, IN8
o Input signal not present
green Input signal present
green ashing
(1.75 s
on / 0.25 s o)
Error detected (cross-circuit at input / wirebreak / short-circuit to power
cable / discrepancy error / feedback circuit error / sequence error / error
during startup test)
Input signal present
green ashing
(0.75 s
on / 1.25 s o)
Error detected (cross-circuit at input / wirebreak / short-circuit to power
cable / discrepancy error / feedback circuit error / sequence error / error
during startup test)
Input signal not present
Q1, Q2 o Output signal not present
green Output signal present
1)
Please note the safety information below.
Diagnostics / service
7.3 Diagnostics with LEDs
SIRIUS 3RK3 Modular Safety System
Equipment Manual, 07/2020, NEB926253002000/RS-AC/006 257
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