Delta VFD11AMS21AFSHA, User Manual

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Chapter 17 Safe Torque Off Function

MS300
(High Speed Model)
17-9
17-7 Error Code and Troubleshooting Instructions
17-7-1 Error Code Description
Refer to Pr. 06-17 ~ Pr. 06-22 for fault record, wherein STO relevant error code is 72 / 76 / 77 / 78, the
definition is as follows and Table 4:
Fault Record 1
Fault Record 2
Fault Record 3
Fault Record 4
Fault Record 5
Fault Record 6
Settings
72: Channel 1 (S1~DCM) safety loop error (STL1)
76: Safe torque off (STo)
77: Channel 2 (S2~DCM) safety loop error (STL2)
78: Internal loop error (STL3)
Error code Name Description
76
(STO)
Safe torque off Safe torque off function active
72
(STL1)
Channel 1 (S1~DCM)
safety loop error
S1~DCM internal
loop
detected error
77
(STL2)
Channel 2 (S2~DCM)
safety loop error
S2~DCM internal
loop
detected error
78
(STL3)
Internal loop error
S1~DCM and S2~DCM internal
loop
detected error
Table 4: Error code description