Examples Of How The Safety Functions Can Be Applied - Siemens SINUMERIK 828D Function Manual

1.2

Examples of how the safety functions can be applied

Safety function Application examples
STO When an Emergency Stop button is pressed, the drive must be
braked as quickly as possible and transitioned into STO
A central Emergency Stop button ensures that several drives
cannot unintentionally start.
SS1 It is only permissible to open a protective door if the motor torque
has been switched off.
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 an acknowledgment
button.
A spindle drive must not exceed a specific maximum speed,
depending on the selection of the cutting tool.
SSM It is only permissible to open a protective door when a motor is at
standstill.
SDI It is only permissible to open a protective door if a drive moves in
the safe direction (away from the operator).
When replacing the plates of the pressure cylinders, 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.
NOTICE
PROFIsafe function
The PROFIsafe function for the SINUMERIK 828D has not been released.
Safety Integrated
Function Manual, 07/2012, 6FC5397-3EP40-3BA0
General information about SINAMICS Safety Integrated
1.2 Examples of how the safety functions can be applied
Possible 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.
Select SS1 in the inverter via a fail-
safe input or via PROFIsafe.
After pressing the Emergency Stop
button, the drive is braked along the
braking ramp and then brought into a
torque-free condition.
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 SSM in the inverter; the
inverter safety monitors the speed
and releases the process to proceed
via PROFIsafe using the status bit
"Status SSM".
Selecting SDIin the inverter; enable
the protective door via status bit
(PROFIsafe) of the inverter.
Selecting SDI in the inverter.
Disabling the hazardous direction of
rotation.
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