8.9.1 Error Codes
If bit 3 of the statusword is set, this indicates any faults that occur on the servo drive. If the fault occurred because of the STO circuit,
the cause of the fault can be found in object 0x603F.
Table 24: Error Codes
Error code PROFINET
®
error code
Classification Description
Reset
0xFF80
0x11E
Fault
STO activated while the servo drive was enabled, or an at-
tempt to enable the servo drive was made while STO was
activated.
Reset via the PLC.
0xFF81
0x11F
Safety fault
Servo drive internal diagnostic fault.
Carry out a power cy-
cle.
0xFF85
0x120
Safety fault
Internal STO supply on the power card is not within limits. Carry out a power cy-
cle.
Error code 0xFF80/0x11E can be a normal status of the application. In this case, the servo drive requires a reset signal from the PLC.
To use the STO function in an application that requires a control guard (see ISO 12100 for details), this reset information can be
given automatically by the PLC. All servo drives on the same line will display this fault at the same time. Carry out a check on the PLC
to compare the fault of all servo drives on 1 line.
Error code 0xFF81/0x11F means that there is a fault on the servo drive that can only be reset by carrying out a power cycle. Com-
plete the commissioning test after the power cycle. Operation of the servo system can only be resumed if the test is completed
successfully. If error code 0xFF81/0x11F or 0xFF85/0x120 is issued again, contact Danfoss Service.
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 (VLT®
Flexmotion
™
) Programming Guide
for further information.
8.10 Functional Safety Characteristic Data
Table 25: Functional Safety Characteristic Data
Data
ISD 511
PSM 510
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
–
–
Category
3
–
–
Mean time to dangerous failure (MTTF
D
)
>100 years
–
–
Diagnostic coverage (DC)
Low
–
–
Data for IEC 61508
Safety Integrity Level (SIL)
2
–
–
Probability of failure per hour (PFH)
<4 x 10
-9
/h
0 /h
0 /h
Subsystem classification
Type A
Diagnostic test interval
1 year
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/ 130R1213
94 | Danfoss A/S © 2023.08
Safety Concept
VLT® Servo Drive System ISD 511
Operating Guide
