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Functional safety technology
Page 62
Product Manual
“Servo drive DIS-2 310/2 FB FS STO“
Version 4.0
Table 28:
Time data concerning Figure 8
Time
Description
Value
t
STO1-ON
STO1
– switching time from low to high
STO1 switch-on time from low to high until the
blocking of the PWM signal is deactivated
section 4.6
t
STO2-ON
STO2
– switching time from low to high
STO2 switch-on time from low to high until the
supply of the output stage drivers is available
section 4.6
t
STO1-OFF
STO1
– switching time from high to low
STO1 switch-off time from high to low until the
blocking of the PWM signal is activated
section 4.6
t
STO2-OFF
STO2
– switching time from high to low
STO2 switch-off time from high to low until the
supply of the output stage drivers is no longer
available
section 4.6
t
DIN9-low
Time during which DIN9 must be low before
STO1/2 will be switched on again
0 ms
t
V-DIN9-low
Delay during which DIN9 must still be low after
STO1/2 have been switched on again and the
status of the STO function has changed
> 5 ms
t
V-Drive
Internal delay due to the firmware
0...5 ms
t
V-Brake-ON
Switch-off delay of the holding brake (time until
the brake is engaged)
Depending on the brake
1)
T
V-Brake-OFF
Switch-on delay of the holding brake (time until
the brake is released)
Depending on the brake
2)
1)
Physical delay until the brake is closed. As far as this example is concerned, this time does not need to be
parameterised in the servo drive since, at this point of time, the internal servo drive enabling is no longer set
due to the STO selection.
2)
Minimum time: Physical delay until the brake is open. This time can be parameterised by way of a higher
value in the servo drive.