Chapter 15 Safe Torque Off FunctionME300
15-9
15-7 Error Code and Troubleshooting Instructions
15-7-1 Error Code Description
Refer to Pr.06-17–Pr.06-22 for the fault record; the relevant STO error code is 72/76/77/78. The
definition is as follows and in 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 detection error
77 (STL2)
Channel 2 (S2–DCM)
safety loop error
S2–DCM internal loop detection error
78 (STL3) Internal loop error
S1–DCM and S2–DCM internal loop
detection error
Table 4: Error code description
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