Mitsubishi Electric 800 Series Instruction Manual page 31

 SBC output shutoff delay time (Pr.S024)
The following shows the operation example when the STO function is activated by the SS1 command input.
• Pr.S024 can be used to set a delay for the time from when the brake is activated until the STO function is activated.
• The STO function is activated when the time set in Pr.S024 elapses after the brake is activated.
NOTE
• When the SS1C signal is turned OFF in advance, the STO state is activated immediately by power reset or inverter reset.
(The settings in Pr.S004 SS1 deceleration monitoring time and Pr.S024 SBC output shutoff delay time are disabled.)
• When the output is shut off by the protective function (E.SAF), the Pr.S024 setting is invalid.
 SBC brake release delay time (Pr.S025)
The following shows the operation example when the STO function is activated by the SS1 command input.
• Pr.S025 can be used to set a delay for the time from when the STO state is cleared until the brake is released.
• The SBC signal turns ON when the time set in Pr.S025 elapses after the STO state is cleared.
Pr.S004 Pr.S024
Output frequency
Start command
ON
(STF)
SS1 command
ON
(SS1C)
STO output
ON
(STOS)
SBC output
ON
(SBC)
Normal operation
Brake operating
Output frequency
Start command
(STF)
SS1 command
(SS1C)
STO output
(STOS)
SBC output
(SBC)
STO state
Brake operating
Actual motor speed
Time
STO state
Actual motor speed
Pr.S025
Time
ON
ON
ON
ON
Normal operation
3
4
5
5
5
6
7
8
9
10
31
5. Safety Sub-Functions
5.5 SBC function