Display Of The Operating State - Siemens 3TK28 Manual

3.6.2.5

Display of the operating state

Two LEDs and a slide switch indicate the operating state and functioning of the device:
● DEVICE
● OUT
Operating state of 3TK2820
LED
DEVICE
= off
Selector switch
Start
3TK28 safety relays
Manual, 07/2016, NEB926157502000/RS-AB/003
OUT Line supply
On
= on
Up
Down
Description of the individual safety relays
3.6 3TK28 safety relays with relay enabling circuits
Operation
EMERGENCY
STOP
Not pressed
Pressed Not pressed
Not pressed Not pressed
Fault
Fault in sensor circuit
Automatic start
Monitored start
ON Enabling circuit
Pressed Closed
Open
Open
Open
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