Danfoss VLT AutomationDrive EZ FC 321 Operating Manual page 19

Safe Torque Off
Operating Guide
6 STO Technical Data
6.1 Notices Regarding Technical Data
For technical specifications and operating conditions for the drive, refer to the Operating Guide of the relevant drive.
The STO signal must be SELV or PELV supplied.
6.2 European Directives
Machinery Directive (2006/42/EC)
EMC Directive (2014/30/EU)
Low Voltage Directive (2014/35/EU)
6.3 Safety Standards
Safety of Machinery
Functional Safety
6.4 Safety Function
Safe Torque Off (STO)
Stop Category 0
6.5 Safety Performance
ISO 13849-1
Category
Diagnostic coverage
Mean time to dangerous failure
Performance level
IEC 61508
Safety integrity level
Probability of dangerous failure per hour
Probability of dangerous failure on demand
Subsytem classification
Proof test interval T1
Mission time TM
Reaction time
Input to output response time
Danfoss A/S © 2022.11
N O T I C E
N O T I C E
PFH: 1E-10/h; 1E-8/h for specific variants (High Demand Mode)
PFD: 1E-10; 1E-4 for specific variants (Low Demand Mode)
STO Technical Data
EN ISO 13849-1, EN IEC 61800-5-2
EN 50011, EN 61000-6-3, EN 61800-3
EN 50178, EN 61800-5-1
EN ISO 13849-1, IEC 60204-1
IEC 61508-1 to -7, IEC 61800-5-2
DC: 90% (Medium)
MTTFd: 100 years (high)
Maximum 20 ms, 60 ms for specific variants
AQ355238304444en-US0301 / 130R0955 | 19
IEC 61800-5-2
IEC 60204-1
Cat 3
PL d
SIL2
Type A
20 years
20 years