Description of the individual safety relays
3.7 3TK28 safety relays with solid-state enabling circuits
3TK28 safety relays
Manual, 07/2016, NEB926157502000/RS-AB/003
115
3TK2840-1B...
3TK2840-2B...
Design of the input
•
cascading-input/functional switching
No
•
feedback input
Yes
•
start input
Yes
Design of the electrical connection jumper socket
Yes
Switching capacity current of semiconductor outputs
for enabling circuit for DC-13 at 24 V
A 0.5
Type of voltage of the controlled supply voltage
DC
Control supply voltage 1 for DC final rated value
•
for DC rated value
V 24
Operating range factor control supply voltage rated
value of the magnet coil for DC
0.9
1.15
Product function
•
automatic start
Yes
•
rotation speed monitoring
No
•
laser scanner monitoring
No
•
light grid monitoring
No
•
light barrier monitoring
No
•
magnetic switch monitoring Normally closed
contact-Normally open contact
No
•
magnetic switch monitoring Normally closed
contact-Normally closed contact
Yes
•
emergency stop function
Yes
•
protective door monitoring
Yes
•
standstill monitoring
No
•
step mat monitoring
No
•
monitored start-up
Yes
Acceptability for application
•
safety-related circuits
Yes
•
safety cut-out switch
Yes
•
magnetically operated switches monitoring
Yes
•
EMERGENCY-OFF circuit monitoring
Yes
•
proximity switches monitoring
No
•
opto-electronical protection device monitoring
Yes
•
position switch monitoring
Yes
•
tactile sensor monitoring
No
•
valve monitoring
No
