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
99
• 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
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 ISO 13849-1
e
• for delayed release circuit according to ISO 13849-1
—
• according to EN 954-1
corresponds to basic unit
• according to ISO 13849-1
4
Safety device type according to IEC 61508-2
Probability of dangerous failure per hour (PFHD)
with high
demand rate according to EN 62061
1/h 0.0000000012
for proof test interval or service life
s 630 720 000
as contact-affected switching element
as NO
contact safety-related
• as NC contact for reporting function instantaneous switching
0
• as NO contact safety-related instantaneous switching
4
• as NO contact safety-related delayed switching
0
Stop category according to DIN EN 60204-1
• cascading-input/functional switching
No
• feedback input
Yes
• start input
No