Siemens 3TK28 - Page 115

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