9
vacon • 123 Safe Torque Off
9.8 Maintenance and diagnostics
The STO function or the STO input/output terminals do not need any maintenance.
The following table shows faults that may be generated by the software that monitors the hardware
related to the STO safety function. If you detect any failure in safety functions, including STO, contact
your local VACON
®
supplier.
If any service or repair is to be conducted on the drive installed, please inspect the
checklist given in Table 44
During maintenance breaks, or in case of service/repair, ALWAYS make sure that the
STO function is available and fully functional by testing it.
Fault Code Fault Cause Correction
30 STO fault
STO inputs in a differ-
ent state or both de-
energized
Check cabling
Table 45. Fault related to the STO function.
To Next Page
Loading...
