8-10
8.6.3 Inverter output state when Safe Torque Off (STO) is activated
Turning the emergency stop button ON turns EN1 and EN2 OFF, bringing the inverter into the Safe Torque Off
(STO) state.
Figure 8.6 shows the timing scheme to apply when the emergency stop button is turned OFF with the inverter
being stopped. Input signals to EN1 and EN2 become ON, making the inverter ready to run.
Figure 8.6 Inverter Output State when the Emergency Stop Button is Turned OFF with the Inverter Being stopped
Input to EN 1/EN 2
R un
R un com m and
Inverter output
O N
O FF
W ait for a run
com m and
R unning
Em ergency stop
button
O FF
O N
S top
S afe Torque O ff
(
S TO )
S top
O N
S afe Torque O ff
(
S TO )
O FF
W ait for a run
com m and