Technical Data 3Tk2856 / 3Tk2857 - Siemens 3TK28 Manual

Description of the individual safety relays
3.8 3TK28 safety relays with contactor relay enabling circuits
3.8.4.7

Technical data 3TK2856 / 3TK2857

EMC emitted interference
Item designation
according to DIN 40719 extendable after IEC 204-2
•
according to IEC 750
according to DIN EN 61346-2
•
Number of sensor inputs 1-channel or 2-channel
Design of the cascading
Type of the safety-related wiring of the inputs
Product feature transverse contact-secure
Safety Integrity Level (SIL) according to IEC 61508
SIL claim limit (for a subsystem) according to EN 62061
Safety integrity level (SIL) for delayed release circuit
according to IEC 61508
Performance Level (PL)
according to ISO 13849-1
•
for delayed release circuit according to ISO 13849-1
•
Category
according to EN 954-1
•
according to ISO 13849-1
•
Safety device type according to IEC 61508-2
Probability of dangerous failure per hour (PFHD) with high
demand rate according to EN 62061
T1 value for proof test interval or service life according
to IEC 61508
176
3TK2856-.B...
IEC 60947-5-1, IEC 60000-4-3,
IEC 60000-4-5, IEC 60000-4-6
KT
F
—
cascading and in-service switching
—
No
SIL3
3
—
e
—
corresponds to basic unit
4
Type B
1/h 0.000000011
a 20
Manual, 07/2016, NEB926157502000/RS-AB/003
3TK2857-.B...
SIL3
e
3TK28 safety relays