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          7. Main Unit, Finger-protection Type, 55 Optical Axes

          Safety Light CurtainGL-R series

          Main Unit, Finger-protection Type, 55 Optical Axes



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          Detection capability

          ø14 mm

          Beam axis spacing/Lens diameter

          10 mm / ø4

          Detecting distance

          0.2 to 10 m*1

          Effective aperture angle

          Max. ±2.5° (When operating distance is 3 m or more)

          Light source

          Infrared LED (870 nm)

          Response time (OSSD) (ms)

          Wire synchronisation, One-line or
          Optical synchronisation system (Channel 0)





          All blocked→ON


          Optical synchronisation system
          (Channel A or B)





          All blocked→ON


          Detection mode

          Turns on when no interruptions are present in the detection zone

          Synchronisation between the transmitter and receiver

          Optical synchronisation or Wire synchronisation (Determined by wiring)

          Light interference prevention function

          Prevents mutual interference in up to two GL-R systems.
          Optical synchronization: prevented by Channel A and B with setting switch
          Wire synchronization: prevented automatically

          Control output
          (OSSD output)


          2 transistor outputs. (PNP or NPN is determined by the cable type)

          Max. load current

          500 mA*4

          Residual voltage (during ON)

          Max. 2.5 V (with a cable length of 5 m)

          OFF state voltage

          Max. 2.0 V (with a cable length of 5 m)

          Leakage current

          Max. 200 µA

          Max. capacitive load

          2.2 µF

          Load wiring resistance

          Max. 2.5 Ω

          Supplemental output
          (Non-safety-related output)


          transistor outputs. (PNP or NPN is determined by the cable type)
          Load current: Max. 50 mA, Residual voltage: Max. 2.5 V (with a cable length of 5 m)

          Error output

          Muting lamp output

          Incandescent lamp (24 VDC, 1 to 5.5 W)
          LED lamp (load current: 10 to 230 mA) can be connected.

          External input

          When using a PNP output cable

          EDM input
          Wait input
          Reset input
          Muting input 1, 2
          Override input

          ON voltage: 10 to 30 V
          OFF voltage: Open or 0 to 3 V
          Short circuit current: Approx. 2.5 mA (Approx. 10 mA with EDM input only)

          When using an NPN output cable

          ON voltage: 0 to 3 V
          OFF voltage: Open or 10 V or more
          Up to the power voltage
          Short circuit current: Approx. 2.5 mA (Approx. 10 mA with EDM input only)


          Power voltage

          24 VDC ±20%, ripple (P-P) 10% or less, Class 2

          Power supply

          (Max.) (mA)





          Protection circuit

          Reverse current protection, short-circuit protection for each output, surge protection for each output

          Approved standards



          IEC61496-1, EN61496-1, UL61496-1


          EN55011 ClassA, FCC Part15B ClassA, ICES-003 ClassA


          IEC61496-1, EN61496-1, UL61496-1 (Type 4 ESPE)
          IEC61496-2, EN61496-2, UL61496-2 (Type 4 AOPD)
          IEC61508, EN61508 (SIL3), IEC62061, EN62061 (SIL CL3)
          EN ISO13849-1:2015 (Category 4, PLe)

          Environmental resistance

          Enclosure rating

          IP65/IP67 (IEC60529)

          Overvoltage category


          Ambient light

          Incandescent lamp: 3,000 lux or less, Sunlight: 20,000 lux or less

          Operating ambient temperature

          -10 to +55 °C (No freezing)

          Storage temperature

          -25 to +60 °C (No freezing)

          Operating relative humidity

          15 to 85 % RH (No condensation)

          Storage relative humidity

          15 to 95 % RH

          Vibration resistance

          10 to 55 Hz, Double amplitude 0.7 mm, 20 sweeps in each of the X, Y, and Z directions

          Shock resistance

          100 m/s2 (Approx. 10 G), 16 ms pulse, 1,000 times in each of the X, Y, and Z directions


          Main unit case


          Upper case/lower case

          Nylon (GF 30%)

          Front cover

          Polycarbonate, SUS304



          780 g


          *1 When the option front protection cover is installed on the one of transmitter or receiver, the Operating distance is shorten by 0.5 m. When the front covers are installed on both of the transmitter and receiver, the Operating distance is shorten by 1.0 m.
          *2 If the interruption is present in the detection zone for less than 80 ms, the response time (OFF to ON) will
          be 80 ms or more to ensure that the OSSD maintains the OFF state for more than 80 ms.
          *3 “All blocked” means the situation where the GL-R operates in optical synchronisation system and the
          transmitter and receiver is not synchronised (top and bottom beam axes are both blocked). In this situation,
          the response time is longer because the GL-R synchronises the transmitter and receiver fi rst and then
          determines the clear or blocked.
          *4 When the GL-R is used under surrounding air temperatures between 50 to 55°C, the Maximum load current should not exceed 350 mA.

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