Chapter 17 Safe Torque Off FunctionMS300 (High Speed Model)
17-6
17-6 Timing Diagram Description
The following timing diagram shows the status of relevant signals under different conditions:
17-6-1 Normal operation status
As shown in Figure 4: When S1~DCM and S2~DCM is ON (STO function is not required), the
drive will execute “Operating” or “Output Stop” according to RUN command.
Figure 4
17-6-2-1 STO, Pr. 06-44=0, Pr. 02-35=0 (Selection of external control operation after
reset / power on, 0=not valid)
As shown in Figure 5: When both of S1~DCM and S2~DCM are OFF during operation
(STO function is required), the drive will stop outputting when enter safe mode regardless
of Run command is ON or OFF status.
Figure 5
RUN command
RUN
STOP
Drive output
S1~DCM
input status
Operat ing
Output stop
S2~DCM
input status
ON (no STO function need Pr.06-44=0),
ON (no STO function need Pr.06-44=0),
RUN
ON
ON
OFF
OFF
ON
ON
STOP
RUN
Operating
Output stop
RUN command
Drive output
S1~DCM
input status
S2~DCM
input status
ON