Danfoss VLT Safety Option MCB 150 Installation Manual page 95

Installation Guide | VLT® Safety Option MCB 150/151
Table 36: Safety Function
IEC 61800-5-2
Safe Torque Off (STO)
Safe Stop 1 (SS1)
Safely Limited Speed (SLS)
Table 37: Safety Performance
Name of performance
Safety Integrity Level
HFT (IEC 61508)
Subsystem classification
Probability of dangerous failure per hour
Probability of dangerous failure on demand
Category
Performance level
Mean time to dangerous failure of each channel
Average diagnostic coverage
Safe failure fraction
Proof test interval
Danfoss A/S © 2018.09
Technical Specifications
IEC 60204-1
Stop Category 0
Stop Category 1
–
Type/description
SIL 2
SIL CL2
Hardware Fault Tolerance = 1
Type B
PFH: 1,52 e-8
PFD: 1,33 e-3
Cat 3
PL d (cat 3)
MTTFd: 245 years (High)
DC : 86% (Low)
ave
SFF: 90%
20 years
AQ279747441421en-000101 / 130R0292 | 95