Pilz PMCprotego D.72/000/0/0/2/208-480VAC - Manual (Page 51)

Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: [email protected]
4-17
4.3 Control element
4 Function Description
4.3.3.1 Safety information
Safety information 4- ][Funktion_STO_Sicherheit
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.
4.3.3.2 Signal states
Signal states 4- ][Funktion_STO_Signale
If the safety function STO is not required, 24 VDC must always be con-
nected to the inputs STO1-ENABLE and STO2-ENABLE.
Status conditions of the servo amplifier when using STO1-ENABLE and
STO2-ENABLE:
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.