Applications
Leuze electronic GmbH + Co. KG
MLC 530 SPG
44
6.1.1
Transport out of a danger zone
Description
• Final assembly of vehicles
Vehicles are transported out of a danger zone with a transport system.
• Required Performance Level: PL e
• Typical conveyor speed: < 0.1 m/s
v
T1
1
T2
2
3
4
4
1
Protective sensor with SPG operation
2
Danger zone; automated assembly station
3
Transport system
4
Workplace for manual work
T1
Gating start
T2
Gating end
v
Conveyor speed of the transport system (typically < 0.1 m/s)
Fig. 6.3:
Transport out of a danger zone
Prerequisites and criteria for permissible SPG operation
Criterion for SPG operation
Criterion satis-
fied
Remark
Access guarding with material
passage.
Yes
Position of the transport material
is known to the control.
Yes
The current position of the vehicle is determined
from the conveyor speed and system sequence.
Position information comes from a
source that cannot easily be tam-
pered with
Yes
The CS switching signal is not
generated directly by a person.
Yes
The control calculates the switch-on time of the
CS switching signal from the conveyor speed and
route.
The CS switching signal is gener-
ated indirectly by a sensor.
Not applicable
Protective field violation in less
than 4 s after the CS switching
signal.
Yes
If the transport flow is interrupted, the control can
interrupt the SPG cycle if the protective field was
not yet interrupted (see chapter 4.4.1 "Operating
mode 1 - Qualified stop").
