Danfoss VLT Safety Option MCB 150 User Manual

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

Danfoss VLT Safety Option MCB 150 Specifications

General

Brand	Danfoss
Model	VLT Safety Option MCB 150
Category	Control Unit
Language	English