Examples Of How The Safety Functions Can Be Applied - Siemens SINAMICS G120 Function Manual

Description

2.1 Examples of how the safety functions can be applied

2.1 Examples of how the safety functions can be applied
Safety function Application examples
STO When the emergency stop button is pressed, a stationary motor
must not start unintentionally.
A central emergency stop button is designed to prevent more than
one drive from starting unintentionally.
SLS After opening a protective door, the machine operator must enter
the machine and in the hazardous zone, operate a horizontal
conveyor belt running at a slow speed using a pushbutton.
A spindle drive, depending on the selection of the cutting tool,
must not exceed a specific maximum speed.
SS1 A protective door must only be opened when a motor is at
standstill.
SSM A centrifuge may only filled below a minimum velocity.
SDI A protective door must only be opened if a drive moves in the safe
direction (away from the operator).
When replacing the pressure cylinders of the plates, the drive
must only move in the safe direction of rotation.
After a protective device to detect a jammed door responds, a
rolling shutter gate may only start to move in one direction.
When a crane trolley is at the operating limit switch then it may
only start in the opposite direction.
16
Solution
Selecting STO in the inverter via
terminal strip using an Emergency
Stop button.
Evaluating the Emergency Stop
button in a central control, selecting
STO in the inverter viaPROFIsafe.
Selecting SLS in the inverter via
terminal block. The inverter limits and
monitors the velocity of the horizontal
conveyor.
Selecting SLS and the corresponding
SLS level in the inverter via
PROFIsafe.
Selecting SS1 in the inverter; enable
the protective door via status bit
"Power removed" (PROFIsafe) of the
inverter.
Selecting SSM in the inverter; the
inverter safety monitors the speed of
the centrifuge and releases the
process to proceed via PROFIsafe
using the status bit "Status SSM ".
Selecting SDI in the inverter; enable
the protective door via status bit
(PROFIsafe) of the inverter.
Selecting SDI in the inverter.
Disabling the hazardous direction of
rotation.
Safety Integrated Function Manual, SINAMICS G120 and G120C
Function Manual, 01/2011, FW 4.4, A5E03052391B AB