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    Sensor

    Main Unit Hand-protection Type 28 Optical Axes

    Model No. : Keyence GL-R28H

    Specifications

    Model

    GL-R28H

    Detection capability

    ø0.98" ø25 mm

    Beam axis spacing/Lens diameter

    20 mm / ø5 0.79" / ø0.20"

    Detecting distance

    0.66 to 49.21' 0.2 to 15 m*1

    Effective aperture angle

    Max. ±2.5° (When operating distance is 9.84' 3 m or more)

    Light source

    Infrared LED (870 nm)

    Response time (OSSD) (ms)

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

    ON→OFF

    7.4

    OFF→ON

    50*2

    All blocked→ON

    66.6*3

    Optical synchronization system
    (Channel A or B)

    ON→OFF

    10.2

    OFF→ON

    54*2

    All blocked→ON

    77.5*3

    Detection mode

    Turns on when no interruptions are present in the detection zone

    Synchronization between the transmitter and receiver

    Optical synchronization or Wire synchronization (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)

    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 16.40' 5 m)

    OFF state voltage

    Max. 2.0 V (with a cable length of 16.40' 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)

    AUX

    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 16.40' 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 supply

    Power voltage

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

    Current
    consumption
    (Max.) (mA)

    Transmitter

    59

    Receiver

    73

    Protection circuit

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

    Approved standards

    EMC

    EMS

    IEC61496-1, EN61496-1, UL61496-1

    EMI

    EN55011 ClassA, FCC Part15B ClassA, ICES-003 ClassA

    Safety

    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)
    UL508
    UL1998

    Environmental resistance

    Enclosure rating

    IP65/IP67 (IEC60529)

    Overvoltage category

    II

    Ambient light

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

    Operating ambient temperature

    -10 to +55 °C 14 to 131 °F (No freezing)

    Storage temperature

    -25 to +60 °C -13 to 140 °F (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 0.03", 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

    Material

    Main unit case

    Aluminum

    Upper case/lower case

    Nylon (GF 30%)

    Front cover

    Polycarbonate, SUS304

    Weight

    Transmitter

    770 g

    Receiver

    *1 When the option front protection cover is installed on the one of transmitter or receiver, the Operating distance is shorten by 1.64' 0.5 m. When the front covers are installed on both of the transmitter and receiver, the Operating distance is shorten by 3.28' 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 synchronization system and the
    transmitter and receiver is not synchronized (top and bottom beam axes are both blocked). In this situation,
    the response time is longer because the GL-R synchronizes 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 122°F to 131°F, the Maximum load current should not exceed 350 mA.


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