Safety at work:
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AS-Interface Safety at Work

MLD 500/AS-i:
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MLD 500

MLD 500/AS-i

Multiple Light Beam Safety Devices


MLD 500/AS-i - Multiple Light Beam Safety Devices
CE TÜV

Access guarding: Multiple Light Beam Safety Device

Special features
  • Type 4 Multiple Light Beam Safety Device in accordance with IEC/EN 61496

  • Integrated AS-Interface, bus connection via the M12‑AS‑i adapter

  • Safe data transfer of the OSSD signals via AS-Interface

  • Device swap-out without PC via SERVICE function of the AS-i Safety Monitor

Important technical data, overview
Type in accordance with IEC/EN 61496 4
SIL in accordance with IEC 61508 and SILCL in accordance with IEC/EN 62061 3
Performance Level (PL) in accordance with EN ISO 13849-1 e
Category in accordance with EN ISO 13849 4
Number of beams 2 3 4
Beam distance 500 mm 400 mm 300 mm
Range (type-dependent) MLDxyy-R/-T: 0.5...50m
MLDxyy-xR/-xT: 20...70m
Range (transceiver systems) 0.5 - 8 m (2-beam)
0.5 - 6 m (3-beam)
Profile cross-section 52 mm x 55 mm
Safety-related switching output (OSSD) AS-i Safety Interface
Connection system M12 plug (AS-i Safety)
AS-i profile S-7.B.1, safe slave
Slave address 1...31, programmable
(factory setting = 0)
Cycle time in accordance with AS-i specifications 5 ms
Current consumption from AS-i circuit 50 mA (transmitter),
max. 140 mA (receiver, type-dependent)
Sensor response time 25 ms
Restart delay time 100 ms or 500 ms

last Update: 2012-05-21