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YASKAWA ELECTRIC
SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual
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 4.21 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 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 is
also equipped with the 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
for safety function specifications.
Table 4.22 Specifications for the Safety Function
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 opening the input to stopping the drive
output
3 ms or less
Response time from opening H1 and H2 terminal inputs to
operating the EDM signal
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