Task; Overview - Siemens SINAMICS S120 Manual

1 Task

1 Task
1.1

Overview

Introduction
The following safety functions according to DIN EN 61800-5-2 are currently
integrated in SINAMICS S120 drives:
Table 1-1: SINAMICS S120 safety functions according to DIN EN 61800-5-2
Name
STO
SS1
SBC Safe Brake Control
SS2
SOS
SLS
SSM Safe Speed Monitor
SDI
SLP
6
Function
Safe disconnection of the torque-generating power supply
to the motor.
Safe Torque Off
The switching on inhibited function prevents the drive unit
from being switched on again. (Category 0 stop function
according to EN 60204-1)
The drive is quickly and safely stopped along the OFF3
ramp and is safely monitored. Transition to STO after a
Safe Stop 1 delay time has expired or the shutdown speed has been
reached. (Category 1 stop function according to
EN 60204-1)
SBC is only used when there is a motor brake and the
motor brake is connected to the power connector via the
outputs.
SBC always responds in conjunction with STO or when
internal safety monitoring functions respond with safe
pulse cancellation.
The drive is quickly and safely stopped along the OFF3
ramp and is safely monitored.
Transition to SOS after a delay time has expired; the drive
Safe Stop 2
remains in closed-loop control. (Category 2 stop function
according to EN 60204-1)
Not available for safety functions without encoder.
This function serves to safely monitor the standstill position
Safe Operating
of a drive; the drive remains in closed-loop control.
Stop
Not available for safety functions without encoder.
The drive speed is safely monitored.
Safely Limited
Parameterizable shutdown response when the limit value
Speed
is violated.
Safely displays when the speed falls below a speed limit
(n < nx).
The direction of motion (positive and negative directions) is
safely monitored.
Safe Direction
Parameterizable shutdown response when moving in the
direction that has not been enabled.
The positioning range of a drive is safely monitored;
corresponds to safety-relevant software limit switches.
Safely Limited
Parameterizable shutdown response when position limits
Position
are violated.
Not available for safety functions without encoder.
Description
PROFIsafe SLS Override
Version 1.0, Entry ID: 81682475