Delta VFD-ED Series

Chapter 16 Safe Torque Off Function | VFD-ED
16-11
16-6 Fault Codes Related to STO
06-16
Present Fault Record
06-17
Second Most Recent Fault Record
06-18
Third Most Recent Fault Record
06-19
Fourth Recent Fault Record
06-20
Fifth Most Recent Fault Record
06-21
Sixth Most Recent Fault Record
Control Mode
VF VFPG SVC FOCPG FOCPM Default: 0
Settings 72: Safe torque loss (STL1)
76: Safe torque output stops (STO)
77: Safe torque loss 2 (STL2)
78: Safe torque loss 3 (STL3)
Fault Code Reading Description
72 (STL1) Safe torque loss (STL1) STO1–SCM1 internal circuit error.
76 (STO) Safe torque output stops (STO)
Safe Torque Off function is enabled while Pr.06-
49 is set to 0000h or 0002h.
77 (STL2) Safe torque loss 2 (STL2) STO2–SCM2 internal circuit error.
78 (STL3) Safe torque loss 3 (STL3)
STO1–SCM1 and STO2–SCM2 internal circuit
error.