Siemens 3TK28 Manual page 178

Description of the individual safety relays
3.8 3TK28 safety relays with contactor relay enabling circuits
Control supply voltage 1 for DC final rated value
for DC rated value
•
Operating range factor control supply voltage rated value
of the magnet coil
at 50 Hz
•
– for AC
at 60 Hz
•
– for AC
for DC
•
Product function
automatic start
•
rotation speed monitoring
•
laser scanner monitoring
•
light grid monitoring
•
light barrier monitoring
•
magnetic switch monitoring Normally closed contact-
•
Normally open contact
magnetic switch monitoring Normally closed contact-
•
Normally closed contact
emergency stop function
•
protective door monitoring
•
standstill monitoring
•
step mat monitoring
•
monitored start-up
•
Acceptability for application
safety-related circuits
•
safety cut-out switch
•
magnetically operated switches monitoring
•
EMERGENCY-OFF circuit monitoring
•
proximity switches monitoring
•
opto-electronical protection device monitoring
•
position switch monitoring
•
tactile sensor monitoring
•
valve monitoring
•
178
3TK2856-.B...
V 24
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0.85
1.1
No
No
No
No
No
No
Yes
Yes
No
No
No
No
Yes
Yes
No
Yes
No
No
Yes
No
No
Manual, 07/2016, NEB926157502000/RS-AB/003
3TK2857-.B...
3TK28 safety relays