Siemens 3TK2845, Manual

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Mounting, Wiring, Initial Start-up
3TK2845 Multifunction Device Manual
4-6
GWA 4NEB 926 2087-22 DS 01
4.3 Meaning of the LED Indicators
Nine LEDs indicate the operating status and the function of the device.
Display during self-test:
2 s lamp test: all LEDs light up, i.e. the two-color "DEVICE" LED lights up yellow
and then the device LED blinks green for approximately 4 seconds.
LED Meaning
Device OFF No supply voltage / supply voltage too low or internal fuse tripped.
Green Supply voltage in permissible operating range
Green blinking Self-test after restart
Red Device defective
→
exchange device
Red blinking Sensor fault (cross-circuit, configuration changed during operation)
→
remedy fault and restart device
14 -- 13 OFF Output passive
Green Output active
24 Off Output passive
Green Output active
Green blinking Feedback circuit open
34 -- 33
(38 -- 37) OFF Output passive
Green Output active
44 (48) OFF Output passive
Green Output active
Green blinking Feedback circuit open
Y 12/22 OFF Input passive (switch-on condition not fulfilled)
Green Input active
If the device LED flashes red: Configuration has been changed
during operation.
Green blinking Cross-circuit at the input (device blinks red),
Sensor simultaneity not fulfilled
Y 42/52 OFF Input passive (switch-on condition not fulfilled)
Green Input active
If the device LED flashes red: Configuration has been changed
during operation.
Green blinking Cross-circuit at the input (device blinks red),
Sensor simultaneity not fulfilled
Y 72/82 OFF Input passive
Green Input active
Table 4-1:Meaning of the LED Display