Kollmorgen S700 Instruction Manual page 45

Kollmorgen
5.9.8.1 Safe operation sequence
WARNING
If the STO function is activated, the amplifier cannot hold the load, the
motor no longer supplies torque. Risk of injury from suspended load!
Drives with suspended loads must also be safely blocked using a
mechanical means (e.g. with the motor holding brake).
CAUTION
When STO is engaged during operation by separating input STO1-Enable
and STO2-Enable from 24 VDC, the motor runs down out of control and
the servo amplifier displays the error F27. There is no possibility of
braking the drive controlled. Risk from uncontrolled movement!
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.
S701x2-S724x2 Instructions Manual
07/2014
Technical description
45