19.1.1 STO Status
Parameter STO Status 277 can be used for an extended diagnosis of the two digital
inputs STOA and STOB. The states of the inputs are bit coded displayed.
Bit Significance Function
Frequency inverter error (Fault)
The signal statuses at the digital inputs STOA and STOB can be linked with inverter
functions.
Signal status at digital input STOA
Inverted signal status at digital input STOA
Signal status at digital input STOB
Inverted signal status at digital input STOB
For further instructions refer to the application manual „STO – Safe torque off”.
06/13 Operating Instructions ACU 259