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
