YASKAWA
TOEPC71061723A YASKAWA AC Drive CR700 Quick Start Guide
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Table 19.1 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
for safety function specifications.
Table 19.2 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
◆
Precautions
DANGER
Sudden Movement Hazard. When you use the Safe Disable function in the safety system of a machine, do a
full risk assessment for the system to make sure that all parts of the system comply with applicable safety standards. Incorrect
application of the Safe Disable function can cause serious injury or death.
DANGER
Sudden Movement Hazard. If the output circuit of the drive is damaged and the Safe Disable function turns
OFF the drive output to a permanent magnet (PM) motor, the motor can rotate 180 electrical degrees. Prevent damage to
equipment and injury to personnel during this condition. Sudden motor movement can cause serious injury or death. It is
possible for current to flow through the motor winding in these conditions.
DANGER
Electrical Shock Hazard. You cannot depend on the Safe Disable function to prevent electrical shock.
Disconnect all power to the drive and wait for the time specified on the warning label before you remove covers. Check the drive
for dangerous voltages before servicing or repair work. If you do work on the drive when it is energized and there is no cover
over the electronic circuits, it can cause serious injury or death.
WARNING
Sudden Movement Hazard. To use the Safe Disable inputs, remove the jumpers between terminals H1-HC
and H2-HC. If the Safe Disable circuit does not work correctly, it can cause serious injury or death.
WARNING
Sudden Movement Hazard. Regularly examine the Safe Disable input and all other safety features. A system
that does not operate correctly can cause serious injury or death.
EN
