Siemens 3TK28 - Technical Data 3 TK2821; 3 TK2824

Description of the individual safety relays
3.6 3TK28 safety relays with relay enabling circuits
3TK28 safety relays
58 Manual, 07/2016, NEB926157502000/RS-AB/003
3.6.4.7
Technical data 3TK2821 / 3TK2824
3TK2821-.C...
3TK2824-.B...
3TK2824-.C...
EMC emitted interference
EN 60947-5-1
Item designation
• according to DIN 40719 extendable after
IEC 204-2 according to IEC 750
KT
• according to DIN EN 61346-2
F
Number of sensor inputs 1-channel or 2-channel
1
Design of the cascading
none
Type of the safety-related wiring of the inputs
single-channel or single-channel and two-channel
Product feature transverse contact-secure
No
Safety Integrity Level (SIL) according to IEC 61508
SIL3
SIL claim limit (for a subsystem)
according to
EN 62061
1
Safety integrity level (SIL)
for delayed release
circuit according to IEC 61508
—
Performance Level (PL)
• according to ISO 13849-1
e
• for delayed release circuit according to ISO
13849-1
—
Category
• according to EN 954-1
3
• according to ISO 13849-1
3 2
Safety device type according to IEC 61508-2
Type A
Probability of dangerous failure per hour (PFHD)
with high demand rate according to EN 62061
1/h
0.0000000011 0.00000000087
T1 value
for proof test interval or service life
according to IEC 61508
a
20
Number of outputs
as contact-affected switching
element as NO contact safety-related
• as NC contact for reporting function
instantaneous switching
1 0
• as NO contact safety-related instantaneous
switching
3 2
• as NO contact safety-related delayed switching
0
Stop category according to DIN EN 60204-1
0
Design of the input
• cascading-input/functional switching
No
• feedback input
Yes
• start input
Yes