Specifications
AS-Interface
ASIsafe
SIMATIC FS400 light curtains
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Siemens IK PI · 2009
6
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Design
A light curtain or light grid comprises an emitter and a receiver,
which must be mounted opposite each other. Depending on the
resolution and the length, a certain number of transmit and re-
ceive diodes are arranged on top of each other. The infrared
LEDs of the emitter emit short light pulses that are detected by
the receive diodes.
• 3SF78 44 light curtains and grids with integrated evaluation
for
Type 4 according to IEC/EN 61496
- Resolution 14, 30, 50 and 90 mm
- Protective field height: 150 mm to 3000 mm
- 2-beam, 3-beam or 4-beam light grids
- Transceiver, 2-beam with deflection mirror
- Cascading of host and guest devices for greater protective
field heights or lengths or for an angular arrangement (as an
option)
• 3RG78 43 light curtains with integrated evaluation
for Type 2
according to IEC/EN 61496, developed according to
EN 61508 (SIL 2), suited for risk assessment according to pr
EN ISO 13849
- Resolution 20, 30, 40 and 90 mm
- Protective field heights from 150 mm to 1800 mm
• 3RG78 46 light curtains with integrated evaluation
for Type 4
to IEC/EN 61496
- Resolution 14, 20, 30, 40 and 90 mm
- Protective field heights from 150 mm to 1800 mm
• 3RG78 42 ASIsafe light curtains and grids
with external evaluation
for Type 4 to IEC/EN 61496
- Resolution 14, 30, 50 and 90 mm
- Protective field heights from 150 mm to 3000 mm
- Transceiver, 2-beam with reflective mirror
- 2-beam, 3-beam or 4-beam light grids
- Connection to actuator sensor interface
- Cascading of host and guest devices for greater protective
field heights or lengths or for an angular arrangement (as an
option)
Standards
• IEC/EN 61496-1, -2 (requirements for non-contact protection
systems)
• EN 999 (including calculation of safety clearances)
• EN 954-1 (machine safety, safety-related parts of control
systems)
• EN 61508 (functional safety of electrical/electronic/program-
mable electronic safety-related systems)
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Function
Blanking function package
The light curtains can also be supplied with an optional blanking
function.
Fixed blanking
If an object is permanently located in the light path, the corre-
sponding zone can be suppressed. This is achieved by sup-
pressing the required number of beams.
The suppressed objects must be permanently located in the
protective zone, otherwise safety cannot be guaranteed. The
light curtain switches the equipment off.
Configuration is carried out using a teach-in function by means
of the safety key or using the programming and diagnostics soft-
ware SafetyLab.
Floating blanking
If moving objects are located in the light path, any number of
beams can be suppressed. The objects can move within the
suppressed beams without the light curtain switching off.
If the moving objects are removed from the zone, the light curtain
will interrupt the hazardous movement, otherwise safety can no
longer be guaranteed.
Configuration is carried out using a teach-in function by means
of the safety key or using the programming and diagnostics soft-
ware SafetyLab.
NSC0_00632
Active beams
Permanently suppressed beams
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Active beams
Permanently suppressed beams
Temporarily suppressed beams