Siemens 3TK28 - Technical Data 3 TK2820

Description of the individual safety relays
3.6 3TK28 safety relays with relay enabling circuits
3TK28 safety relays
42 Manual, 07/2016, NEB926157502000/RS-AB/003
3.6.2.8
Technical data 3TK2820
3TK2820-.AJ..
3TK2820-.AL..
3TK2820-.CB..
EMC emitted interference
IEC 60947-5-1, IEC 61000
Item designation
• according to DIN 40719 extendable after
IEC 204-2 according to IEC 750
—
• according to DIN EN 61346-2
F
Number of sensor inputs
1-channel or
2-channel
1
Design of the cascading
—
Type of the safety-related wiring of the inputs
single-channel and two-channel
Product feature
transverse contact-secure
Yes
Safety Integrity Level (SIL)
according to
IEC 61508
SIL3
SIL claim limit (for a subsystem)
according to
EN 62061
3
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
—
• according to ISO 13849-1
4
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 0.00000000094
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
• as NO contact safety-related instantaneous
switching
3
• as NO contact safety-related delayed
switching
0