Mitsubishi Electric 800 Series Instruction Manual page 32

 Operation when the SBC output shutoff delay time (Pr.S024) and SBC
brake release delay time (Pr.S025) are set
 Activating the STO function before the time set in Pr.S025 elapses
The following shows the operation example when the STO function is activated by the STO command input.
• The STO state is activated immediately by turning OFF the STOC signal before the time set in Pr.S025 elapses after the
STO state is cleared regardless of the Pr.S024 setting.
 Clearing the STO function before the time set in Pr.S024 elapses
The following shows the operation example when the STO function is activated by the SS1 command input.
• When the SS1C signal is turned ON before the time set in Pr.S024 elapses, the STO state is not activated. However, the
SBC signal turns ON when the time set in Pr.S025 elapses after the SS1C signal is turned ON.
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5. Safety Sub-Functions
5.5 SBC function
Output frequency
Start command
(STF)
STO command
(STOC)
STO output
(STOS)
SBC output
(SBC)
Output frequency
Start command
ON
(STF)
SS1 command
ON
(SS1C)
STO output
ON
(STOS)
SBC output
ON
(SBC)
Normal operation
Brake operating
Pr.S025
ON
ON
ON
STO state Normal STO state
operation
Brake operating
Pr.S004 Pr.S024
Pr.S025
Normal operation
Actual motor speed
Time
Actual motor speed
Time
ON
ON
ON