Description
3.3 Accessories
Installation and Operating Instructions SINAMICS G180
46
Operating Instructions, 02/2019, 4BS0751-007
9. Depending on the setting of parameter "P-INVERTER DATA/P-Monitoring/STO" to:
•
"Store"
The inverter remains in the "Switch interlock" state with the display
"!! OFF2 !!" "After STO act.".
Press the "RESET" of the inverter.
The inverter exits the "Switch interlock" state.
•
"Auto.reset"
The inverter automatically exits the "Switch interlock" state.
The inverter starts to test both shutdown paths, display "Test safe torque off" "running" -
assuming that the required conditions are satisfied. This means that terminal -X2:8 must
be controlled - and if a line contactor is being used - this line contactor must be closed.
If the required conditions are still not available, then the inverter waits until the appropri-
ate conditions are available, then performs the test before the inverter is switched on.
The test takes several seconds.
10. If the test is successfully completed, then the inverter is again in the initial state.
If the test results in a fault, then the inverter changes into the "Fault" status. The
"FAULT" LED lights up, and the display changes to "!! Inverter fault !!" "Test safe torque
off".
In this case, it is crucial that you contact the factory.
Additional test if you use a single-circuit trip:
11. Open terminal input X2:24 if a signal is connected.
The inverter either does not display a response, or it may only display a response that is
parameterized for input X2:24, independent of the "Safe torque off" function.
It is not permissible that it changes into the "Fault" state with the following displays:
•
"!! Fault !!" "Safe torque off trig".
•
"!! Inverter !!" "Test safe torque off".
•
"!! Fault !!" "S7 inactive".
In cases such as these, check the setting. Either switch S3 and/or the parameters are
set to the two-circuit trip.
Additional test if you use a two-circuit trip:
12. Only open the safety circuit at X2:24/:3.
The inverter changes into the "Fault" state. The "FAULT" LED lights up.
The display changes to "!! Fault !!" "Safe torque off trig".
13. Reconnect the safety circuit to X2:24/:3 - and acknowledge the fault.
The inverter tests the shutdown paths according to step 9. and 10.
14. Only open the safety circuit at X2:19/:20.
The inverter changes into the "Fault" state. The "FAULT" LED lights up.
The display changes to "!! Fault !!" "Safe torque off trig".
15. Reconnect the safety circuit at X2:19/:20 - and acknowledge the fault.
The inverter changes into the "Switch interlock" state. The inverter displays message "!!
OFF2 !!" "After STO act.".