MLC 530 SPG Smart Process Gating

Access guarding with Smart Process Gating – innovation without muting sensors

The MLC 530 SPG safety light curtains with Smart Process Gating offer a space-saving alternative for access guarding on conveyor lines. This innovative technology allows process control to take place in combination with system control. The solution does not require any muting sensors and delivers exceptional reliability.
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Advantages for you

  • Allows a particularly compact and space‑saving system design because no additional trigger sensors are necessary
  • Reliable passage of transported goods through the system, even with incomplete or changing loads
  • No service calls required for trigger sensor alignment
  • The process starts only in combination with the system control and cannot be bypassed by the operating personnel. This provides optimum protection.
  • Option for additional mechanical damper status monitoring
  • Enhanced manipulation protection
  • Reduction in shutdowns caused by overhanging loads or packaging material
  • Higher resolution and shorter safety distances are possible compared to multiple light beam safety devices / light barriers

No trigger sensors required

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With Smart Process Gating, process control takes place in combination with the system control. A switching signal provided by the PLC and interruption of the protective field by the transported goods are used as triggers for activation of the gating function. No additional trigger sensors are required.

Operating principle and signal response

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The gating function (bridging of the protective field) is activated by the correct sequence of switching signal and protective field violation and monitored by the light curtain. The gating ends either automatically after the transported goods pass through or – in the case of higher conveyor line speeds – by resetting the switching signal.

Application

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Access guarding with Smart Process Gating

Requirement:
Access guarding on the pallet conveyor systems is to prevent persons from accessing the danger zone, while at the same time allowing the transported goods to pass through.

Solution:
The MLC 530 SPG safety light curtains with Smart Process Gating require no additional muting sensors for bridging for the transported goods. As a result, the output stations can be designed in an especially compact and space-saving manner.

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Access guarding in the paint booth

Requirement:
Access guarding needs to prevent persons from entering the danger zone, while at the same time allowing car bodies to be transported into these areas. In addition, the closed state of the pendulum flaps is also to be monitored.

Solution:
The MLC 530 SPG safety light curtains with Smart Process Gating require no additional muting sensors for bridging for the transported goods. The space-saving solution guarantees high availability and high protection against manipulation. With the partial gating function, the safety light curtain uses its upper beams – which are always active – to simultaneously monitor the pendulum flaps as well.

Technical properties

FeaturesMLC 530 SPGMLC 535 SPG RR
Necessary control / achievable performance levelStandard PLC / PL d
Safety PLC / PL e
Standard PLC / PL d
Safety PLC / PL e
Protective field lengths14 mm: 900–1,800 mm in 300 mm increments 
30 mm, 40 mm 150–3,000 mm
90 mm: 450–3,000 mm in 150 mm increments
14 mm: 1,200 mm
30 mm: 600–1,200 mm
40 mm: 900–2,100 mm in 150 mm increments
Resolutions14 mm, 30 mm, 40 mm, 90 mm 
mixed (optional)
14 mm, 30 mm, 40 mm
mixed (optional)
Operating range10 m, 20 m10 m, 20 m
Profile cross section29 x 35 mm29 x 35 mm
Temperature range-30°C ... 55°C-30°C ... 55°C
Reaction time100 ms50 ms or 100 ms
Functions
BlankingX
Partial gatingX
Qualified stopX
MaxiScanXX
Reduced resolutionX

Smart Process Gating white paper
Safety – Product overview (PDF, ~7 MB)
Safety Solutions – Flyer (PDF, ~0.8 MB)
MLC 530 SPG – Safety light curtains – Flyer (PDF, ~1 MB)