Function Description
Operating Manual PMCprotego D.48, PMCprotego D.72
1001735-EN-04
44
4.3.3 Safety function STO
The safety function STO on the servo amplifier can be triggered by an external safe control
system (semiconductor output or positive-guided relay contact) or via the built-in safety
card PMCprotego Sx.
4.3.3.1 Safety information
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 situations 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 mechanical 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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General