Siemens 3TK28 - Display of the Operating State; State Diagrams 3 TK2830

Description of the individual safety relays
3.6 3TK28 safety relays with relay enabling circuits
3TK28 safety relays
98 Manual, 07/2016, NEB926157502000/RS-AB/003
3.6.8.5
Display of the operating state
The operating state and functioning of the device are indicated by two LEDs:
● CHANNEL 1
● CHANNEL 2
Operating states of 3TK2830
= off
= on
LED
Operation
Channel 2
Channel 2
Line supply
Enabling circuit
On Closed
Open
Fault
• Relay jammed
• Motor contactor jammed
• Fault in electronics
• Supply voltage missing
3.6.8.6
State diagrams 3TK2830
Figure 3-38 State diagrams 3TK2830
.CB30
.A.20
1)
50 ms
100 ms
2)
25 ms
80 ms
3)
30 ms
200 ms