Safe Torque Off 6-5AC30 series Variable Speed InverterSafety SpecificationAs assessed to EN ISO13849-1 and EN61800-5-2 the inverter has the following related safety values:-Criterion Requirement Value achievedSIL3 For type A subsystems, HFT = 1:SFF ≥ 60% SFF = 99%SIL3 10-7 ≥ PFH ≥ 10-8 PFH = 2.3 x 10-9SIL Capability - 3PLe Category 3; PFH ≤ 4,29 x 10-8 PFH = 2.3 x 10-9PLe 30 years ≤ MTTFd < 100 years MTTFd = 100 years1PLe DC = medium DC = MediumMission Time 20 years 20 yearsFault Reaction Function - Latched STO2Note: all values quoted in this table are valid only when the two STO user inputs are driven independently. This is as required by EN ISO13849-1 category 3. See the Alignment to European Standards section in this chapter for the required architecture which must be usedthroughout the machine design relevant to the drive under consideration.1 EN ISO13849 limits MTTFd to 100 years.2 A detected fault in the STO circuit causes STO to become active, and remain active until after a power cycle.
