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Functional safety technology
Page 68
Product Manual
“Servo drive DIS-2 310/2 FB FS STO“
Version 4.0
channels via STO1/2. Once the output stage has been switched off, this is output by the floating
contact REL1-REL2.
Notes concerning the circuit example
The safety switching device that is used must switch the servo drive enabling (X1-A5, DIN9) off
without delay and the inputs STO1 and STO2 (X40-1, X40-5) with a delay.
The necessary delay depends on the application and must be determined specifically for the
application. The delay must be chosen so that, even at top speed, the drive is decelerated to zero
speed by way of the quick-stop ramp in the DIS-2 FB FS STO before STO1/2 are switched off.
The illustration shows the pin assignment of the STO connector X40 directly on the board and not
the pin assignment of the circular connector in the mounting plate.