Standards Compliance
4
4.6 Safe Disable Input
YASKAWA SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual 295
4.6 Safe Disable Input
Figure 4.26 TUV Mark
The TUV mark identifies that the product complies with the safety standards.
This section gives precautions to support the Safe Disable input. Contact Yaskawa for more information.
The safety function complies with the standards shown in
Table 4.23.
Table 4.23 Applied Safety Standards and Unified Standards
Safety Standards Unified Standards
Functional Safety
IEC/EN 61508:2010 (SIL3)
IEC/EN 62061/A2:2015 (SILCL3)
IEC/EN 61800-5-2:2007 (SIL3)
Machine Safety
ISO/EN ISO 13849-1:2015 (Cat.3, PL e)
EMC
IEC/EN 61000-6-7:2015, IEC/EN61326-3-1:2008
Note:
SIL = Safety Integrity Level.
◆ Safe Disable Specifications
The Safe Disable input provides the stop function that complies with “Safe Torque Off” as specified by IEC/EN
61800-5-2:2007. The Safe Disable input meets the requirements of EN ISO 13849-1 and IEC/EN 61508. It also
has a safety status monitor to detect safety circuit errors.
When you install the drive as a component in a system, you must make sure that the system complies with the
applicable safety standards.
Refer to
Table 4.24 for safety function specifications.
Table 4.24 Safe Disable Specifications
Item Description
Input/Output
• Input: 2
Safe Disable input (H1, H2)
Signal ON level: 18 Vdc to 28 Vdc
Signal OFF level: -4 Vdc to +4 Vdc
• Output: 1
MFDO safety monitor output for external device monitor (EDM)
Response time from when the input opens to when the drive output stops 3 ms or less
Response time from when the H1 and H2 terminal inputs open to when the EDM
signal operates
20 ms or less
Failure probability
Less frequent operation request mode PFD = 4.65E
-6
Frequent operation request mode or
continuous mode
PFH = 1.11E
-9
Performance level
The Safe Disable input complies with the performance level requirements of EN ISO 13849-
1.
HFT (hardware fault tolerance) N = 1
Type of subsystem Type B
Note:
EDM = External Device Monitoring
PFD = Probability of Failure on Demand
PFH = Probability of Dangerous Failure per Hour
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