8.9.2 Fault Reset
To reset faults, change bit 7 of the controlword from 0 to 1. See the VLT
®
Servo Drive System ISD 510, DSD 510, MSD 510
Programming Guide for further information.
8.10 Functional Safety Characteristic Data
Table 33: Functional Safety Characteristic Data
Data
PSM 510
SDM 511
SDM 512
DAM 510
General information
Response time (from switching on the input until torque generation is
disabled)
<100 ms
Lifetime
20 years
Data for EN/ISO 13849-1
Performance level (PL)
–
d
d
–
Category
–
3
3
–
Mean time to dangerous failure (MTTF
D
)
–
>5000 years
>5000 years
(1)
–
Diagnostic coverage (DC)
–
60%
60%
–
Data for EN/ISO 61508 and EN/IEC 62061
Safety integrity level (SIL)
–
2
2
–
Probability of failure per hour (PFH)
0 /h
<4 x 10
-9
/h
<4 x 10
-9
/h
0 /h
Safe failure fraction (SFF)
100%
>95%
>95%
100%
Subsystem classification
Type A
Functional test interval
1 year
1
For each axis.
NOTICE
-
The PSM 510, DAM 510, and ACM 510 do not contribute to the dangerous failure rate of the Danfoss system and can
therefore be excluded from safety-related calculations.
8.11 Maintenance, Security, and User Accessibility
Maintenance: Test the STO safety function at least once per year as follows:
•
Remove the STO input voltage.
•
Verify that the motors stop running.
•
Verify that no unexpected error codes appear.
Security: If security risks exist, take suitable measures to prevent them.
Functional Safety Concept
Operating Guide | VLT® Multiaxis Servo Drive MSD 510 System
AQ262450196490en-000101 / 175R1170| 161
Danfoss A/S © 2019.10
Содержание VLT MSD 510
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