Siemens EN 50295 Manuale Utente
Siemens IK PI · 2004
6/19
AS-Interface
AS-Interface Safety at work
AS-Interface light curtains and light arrays
for Category 4
6
■
Overview
The light curtains and light arrays of Category 4 acc. to EN 954-
1 offer active optical protection for persons at machines. They
can be connected to AS-Interface directly and safely as an op-
tion.
1 offer active optical protection for persons at machines. They
can be connected to AS-Interface directly and safely as an op-
tion.
SIGUARD light curtains and light arrays are
• active opto-electronic protective devices (AOPD),
• comply with Type 4 acc. to EN 61496-1, -2,
• are EU prototype-tested,
• protect the operating personel working on or near dangerous
machines,
• operate contact-free,
• are free of wear in comparison to mechanical systems (e.g.
safety mats).
For further details, see the manual "Safety Integrated“ and the
operating instructions for the respective devices.
operating instructions for the respective devices.
■
Benefits
• Double-scan function
• Cascading of host and guest devices
• Two transmission channels
■
Design
A SIGUARD Light Curtain or light array comprises a transmitter
and a receiver that must be mounted opposite each other.
Depending on the resolution and length, a specific number of
transmit and receive diodes are arranged in a vertical row.
The infra-red LEDs of the transmitter send short light pulses that
are received by the receive diodes.
and a receiver that must be mounted opposite each other.
Depending on the resolution and length, a specific number of
transmit and receive diodes are arranged in a vertical row.
The infra-red LEDs of the transmitter send short light pulses that
are received by the receive diodes.
SIGUARD Light Curtains:
• Resolution 14, 30 and 50 mm,
• Length 150 mm to 3 m,
• Cascading of master and slave devices to create larger height
or length of protective zone or for angular arrangement.
SIGUARD Light Arrays:
• 2-, 3- or 4-beam for access protection.
Standards
• EN 61 496-1, -2, IEC 61 496-1, -2 (requirements for non-contact
protection systems)
• EN 999 (incl. calculation of safety clearances)
• EN 954-1 (safety of machines, safety-related parts of controls).