4.4 Safe Disable Input224 YASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual4.4 Safe Disable InputFigure 4.17 TUV MarkThe TUV mark indicates that the product complies with the safety standards.This section describes precautions for supporting the Safe Disable input. Contact us for more information.The safety function complies with the standards shown in Table 4.22.Table 4.22 Safety Standards and Unified Standards AppliedSafetyStandards Unified Standards Applied *1Functional SafetyIEC/EN 61508:2010 (SIL3)IEC 62061:2012 / EN 62061:2013 (SILCL3)IEC/EN 61800-5-2:2007 (SIL3)Machine Safety ISO 13849-1:2006 (Cat.III, PL e) / EN ISO 13849-1/AC:2009 (Cat.III, PL e)EMC IEC 61000-6-7:2014/FprEN 61000-6-7:2014, IEC/EN61326-3-1:2008*1 Approval pending for models 2070 to 2415, 4044 to 4675.Note:SIL is an abbreviation of Safety Integrity Level.◆ SpecificationThe Safe Disable input provides the stop function compliant to “Safe Torque Off” defined in IEC/EN 61800-5-2:2007. The Safe Disable input is designed to meet the requirements of EN ISO 13849-1 and IEC/EN 61508. It isalso equipped with the safety status monitor to detect safety circuit errors.The following table lists the specifications for the safety function.Table 4.23 Specifications for the Safety FunctionItem DescriptionInput/output• Input: 2Safe Disable input (H1, H2)Signal ON level: 18 Vdc to 28 VdcSignal OFF level: -4 Vdc to +4 Vdc• Output: 1Safety monitor output EDM (MFDO)Response time from opening the input to stopping the driveoutput 3 ms or lessResponse time from opening H1 and H2 terminal inputs tooperating the EDM signal 20 ms or lessFailure probabilityLess frequent operation requestmode PFD = 4.65E -6Frequent operation requestmode or continuous mode PFH = 1.11E-9Performance levelThe Safe Disable input complies with the performance levelrequirements of EN ISO 13849-1 in consideration of the self-diagnosticfunction.HFT (hardware fault tolerance) N = 1Type of subsystem Type BNote:EDM = External Device MonitoringPFD = Probability of Failure on DemandPFH = Probability of Dangerous Failure per Hour
