Diagnostics / service
8.2 Diagnostics via LEDs
Modular Safety System 3RK3
System Manual, 10/2008, 926 2530-02 DS 02
241
8.2.7 Displays on the EM 8DI
LED Display Description
Off Input signal not present
Green Input signal present
IN1 / F
Red Device defective
Off Input signal not present IN2, IN3,
IN4, IN5,
IN6, IN7,
IN8
Green Input signal present
8.2.8 Displays on the EM 8 DO
LED Display Description
off Output signal not present
green Output signal present
Q1 / F
red Device defective
off Output signal not present Q2, Q3,
Q4, Q5,
Q6, Q7, Q8
green Output signal present
8.2.9 Displays on the DP interface
LED Display Description
Off No voltage
Green Device OK
Flashing green
1)
Device is in power-up phase
Red Device defective
DEVICE
Flashing yellow
1)
Factory settings restored
Off PROFIBUS bus communication OK
Red PROFIBUS error, e.g. incorrect PROFIBUS address
(DP interface module not addressed)
BF
Flashing red
1)
PROFIBUS parameterization/configuration error
Off No group error SF
Red Group error (communications error to the central unit, ...)
1) Flashing: 0.5 Hz (ratio 1:1)