Siemens SIRIUS 3RK3 - Displays on the EM 2;4 F-DI 2 F-DO; Displays on the EM 4 F-DO; Displays on the 4;8 F-RO

Diagnostics / service
8.2 Diagnostics via LEDs
Modular Safety System 3RK3
240 System Manual, 10/2008, 926 2530-02 DS 02
8.2.4 Displays on the EM 2/4 F-DI 2 F-DO
LED Display Description
off Input signal not present
green Input signal present
green flashing
(1.75 s on / 0.25 s off)
Error detected (cross-circuit at input)
Input signal present
green flashing
(0.75 s on / 1.25 s off)
Error detected (cross-circuit at input)
Input signal not present
IN1 / F
red Device defective
off Input signal not present
green Input signal present
green flashing
(1.75 s on / 0.25 s off)
Error detected (cross-circuit at input)
Input signal present
IN2, IN3,
IN4,
green flashing
(0.75 s on / 1.25 s off)
Error detected (cross-circuit at input)
Input signal not present
off Output signal not present Q1, Q2
green Output signal present
8.2.5 Displays on the EM 4F-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,
Green Output signal present
8.2.6 Displays on the 4/8F-RO
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