Safety Function Sto; Safety Information - Pilz PMCtendo DD5 Operating Manual

4 Function description
4.3 Control element
4.3.3

Safety function STO

4- ][Funktion_STO_Einl_DD5 Safety function STO
4.3.3.1

Safety information

4- ][Funktion_STO_Sicherheit Safety information
Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: pilz.gmbh@pilz.de
The safety function STO on the servo amplifier can be triggered by an
external safe control system (semiconductor output or positive-guided
relay contact).
Please note the following safety guidelines:
Please note the intended use of the safety function STO (see Chapter

entitled "Safety").
If the safety function is automatically activated by a control system,

you must ensure that the output on the control system is monitored
for malfunction. This can avoid a scenario in which the safety function
can no longer be actived, e.g. due to a short across the contacts.
WARNING!
Risk to life from the motor running down in an uncontrolled
manner!
If the motor runs down in an uncontrolled manner, hazardous sit-
uations may arise, which could result in serious injury and death.
Once the safety function STO has been triggered, electrical
braking via the drive is no longer possible.
If failsafe braking is required for the drive, an additional mechan-
ical brake must be used.
WARNING!
Risk of electrocution!
The safety function STO does not guarantee electrical isolation
from the power output.
Disconnect the servo amplifier from the mains and wait for the
intermediate circuit to discharge itself.
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