Siemens 3TK28 - Page 43

Description of the individual safety relays
3.6 3TK28 safety relays with relay enabling circuits
3TK28 safety relays
Manual, 07/2016, NEB926157502000/RS-AB/003
43
3TK2820-.AJ..
3TK2820-.AL..
3TK2820-.CB..
Stop category according to DIN EN 60204-1
0
Design of the input
• cascading-input/functional switching
—
• feedback input
Yes
• start input
Yes
Design of the electrical connection
jumper
socket
No
Switching capacity current
• at AC-15 at 24 V
A
4
• of the NO contacts of the relay outputs
– at AC-15 at 230 V
A
4
– at DC-13 at 24 V
A
4
• of the NC contacts of the relay outputs
at AC-15
– at 115 V
A
4
– at 230 V
A
4
Thermal current
of the contact-affected
switching element maximum
A 5
Electrical operating cycles as operating time
typical
200 000
Mechanical operating cycles as operating time
typical
10 000 000
Design of the fuse link
for short-circuit
protection of the NO contacts of the relay
outputs
required
gL/gG: 10 A or quick-response: 10 A or MCB type
B: 2 A or MCB type C: 1.6 A or SITOP select
diagnostics module (order No.: 6EP1961-2BA00)
Type of voltage
of the controlled supply
voltage
AC AC/DC
Control supply voltage frequency
1
rated
value
Hz 50
Control supply voltage frequency
2
rated
value
Hz 60
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
• at 50 Hz for AC
0.85
1.1
• at 60 Hz for AC
0.85
1.1
• for DC
— 0.85
— 1.2