S748-772 Instructions Manual | 7 Technical description
7.9.9.1 Safe operation sequence
If a controlled braking before the use of STO is necessary, the drive must be braked and the
inputs STO1-ENABLE and STO2-Enable have to be separated from +24 VDC time-delayed.
1. Brake the drive in a controlled manner (speed setpoint = 0V)
2. When speed = 0 rpm, disable the servo amplifier (enable = 0V)
3. If there is a suspended load, block the drive mechanically
4. Activate STO (STO1-Enable and STO2-Enable = 0V)
The diagram shows how STO should be used to ensure a safe stop of the drive and error free
operation of the servo amplifier.
46 Kollmorgen | kdn.kollmorgen.com | July 2019