Siemens 3TK28 - Page 78

Description of the individual safety relays
3.6 3TK28 safety relays with relay enabling circuits
3TK28 safety relays
78 Manual, 07/2016, NEB926157502000/RS-AB/003
3TK2825-.A...
3TK2825-.B...
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
No
• emergency stop function
Yes
• protective door monitoring
Yes
• standstill monitoring
No
• step mat monitoring
Yes
• monitored start-up
Yes
Acceptability for application
• safety-related circuits
Yes
• safety cut-out switch
Yes
• magnetically operated switches monitoring
No
• EMERGENCY-OFF circuit monitoring
Yes
• proximity switches monitoring
No
• opto-electronical protection device monitoring
No
• position switch monitoring
Yes
• tactile sensor monitoring
No
• valve monitoring
No
Utilization category
DIN EN / IEC 60947-5-1
Rated operational voltage
U
e
[V]
Rated operational current I
e
[A]
if all enabling circuits are loaded
60 °C 70 °C
AC-15
230
6
4
DC-13
24
6
4
115
0.2
0.2
230
0.1
0.1
Continuous current I
th
6
4