Chapter 17 Safe Torque Off FunctionMS300
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17-6 Timing Diagram Description
The following timing diagrams show the status of relevant signals under different conditions.
17-6-1 Normal operation status
As shown in Figure 17-4, when S1–DCM and S2–DCM is ON (STO function is not required), the drive
executes Operating or Output Stop according to RUN command.
Figure 17-4
17-6-2 STO Status, Pr.06-44 = 0
17-6-2-1 STO, Pr.06-44 = 0, Pr.02-35 = 0
(external operation control selection after reset / reboot, 0 = disable)
As shown in Figure 17-5, when both S1–DCM and S2–DCM are OFF during operation (STO
function is required), the drive stops outputting when it enters safe mode regardless of whether the
RUN command is in ON or OFF status.
Figure 17-5
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