Siemens 3TK28 - Page 177

Description of the individual safety relays
3.8 3TK28 safety relays with contactor relay enabling circuits
3TK28 safety relays
Manual, 07/2016, NEB926157502000/RS-AB/003
177
3TK2856-.B...
3TK2857-.B...
Number of outputs
as contact-affected switching element
as NO contact safety-related
• as contact-affected switching element as NC contact for
reporting function instantaneous switching
1 0
• as contact-affected switching element as NO contact
safety-related instantaneous switching
6 0
• as contact-affected switching element as NO contact
safety-related delayed switching
0 3
• as contact-less semiconductor switching element
– for reporting function
– non-delayed
0
– delayed switching
0
– safety-related
– non-delayed
1
– delayed switching
0
Stop category
according to DIN EN 60204-1
0 1
Design of the input
• cascading-input/functional switching
Yes
• feedback input
Yes
• start input
Yes
Design of the electrical connection jumper socket
Yes
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
6
– at DC-13 at 24 V
A
10
• of the NC contacts of the relay outputs at AC-15
– at 115 V
A
6
– at 230 V
A
6
Thermal current
of the contact-affected switching element
maximum
A —
Electrical operating cycles as operating time typical
—
Mechanical operating cycles as operating time typical
30 000 000
Design of the fuse link
for short-circuit protection of the
NO contacts of the relay outputs required
gL/gG: 10 A
Type of voltage of the controlled supply voltage
DC
Control supply voltage frequency
1
rated value
Hz —
Control supply voltage frequency 2 rated value
Hz
—