Description of the individual safety relays
3.8 3TK28 safety relays with contactor relay enabling circuits
3TK28 safety relays
138 Manual, 07/2016, NEB926157502000/RS-AB/003
Display of the operating states
Operating states of 3TK2805/06
"POWER" indicates that the device is energized.
"CHANNEL 1" and "CHANNEL 2" light up if the ON button has been operated and the
contacts of the EMERGENCY STOP button or the position switch are closed.
State diagrams 3TK2805 / 3TK2806
Figure 3-64 Automatic start
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