Page top


CMOS Laser Sensor with Built-in Amplifier


Stable Detection of Level Differences in the Order of 0.1 mm

Ratings and Specifications

Model NPN output ZX0-LD50A61
PNP output ZX0-LD50A81
Sensing distance 50 ± 10 mm 100 ± 35 mm 300 ± 150 mm 600 ± 400 mm
Ambient temperature
of 10 to 40°C
0.2 mm 0.7 mm 3.0 mm 15 mm
Ambient temperature
of -10 to 55°C
0.5 mm 1.0 mm 6.0 mm 25 mm
Light source (wavelength) Visible-light semiconductor laser
(wavelength: 660 nm, 1 mW max., IEC/EN Class 2, FDA Class 2 *2)
Spot diameter (reference value)
(Defined at the measurement
center distance) *3
0.17 mm dia. 0.33 mm dia. 0.52 mm dia. 0.56 mm dia.
Power supply voltage 10 to 30 VDC (including 10% ripple (p-p))
Power consumption 2,500 mW max. (105 mA max. at 24 VDC, 210 mA max. at 12 VDC)
Control output Load power supply voltage: 30 VDC max., Load current: 100 mA max.
(Residual voltage: 1 V max. (load current 10 mA or less), 2 V max. (load current of
10 to 100 mA))
Monitor output Current output: 4 to 20 mA, maximum load resistance: 300 Ω
(The output is 20 mA for the nearest point in the measurement range in respect
to the Sensor and 4 mA for the farthest point.)
Functions Smart tuning, keep function, background removal, OFF-delay timer, ON-delay
timer, one-shot timer, ON/OFF-delay timer, zero reset, area output, eco
function, hysteresis width setting, and setting initialization
Indicators Digital display (red), output indicator (OUT1, OUT2) (orange), zero reset indicator
(orange), menu indicator (orange), laser ON indicator (green), and smart tuning
indicator (blue)
Judgment output Super-high-speed (SHS) Mode: 1.5 ms, Very-high-speed (VHS) Mode: 3 ms,
High-speed (HS) Mode: 10 ms, or Standard (STND) Mode: 50 ms
Laser OFF input 200 ms max.
Zero reset input 200 ms max.
Ambient illumination Illumination on received light surface:
7,500 lx or less (incandescent light)
Illumination on received light surface:
5,000 lx or less (incandescent light)
Ambient temperature Operating: -10 to 55°C, Storage: -15 to 70°C (with no icing or condensation)
Ambient humidity Operating and storage: 35% to 85% (with no condensation)
Dielectric strength 1,000 VAC, 50/60 Hz, 1 minute
Vibration resistance (destruction) 10 to 55 Hz, 1.5-mm double amplitude, 2 hours each in X, Y, and Z directions
Shock resistance (destruction) 500 m/s2 3 times each in X, Y, and Z directions
Degree of protection *4 IEC IP67
Connection method *5 Pre-wired model (Standard cable length: 2 m) Pre-wired connector model
(Standard cable length: 0.5 m)
Pre-wired models
(2 m)
Approx. 240 g/Approx. 180 g Approx. 270 g/Approx. 210 g
Pre-wired models
(5 m)
Approx. 450 g/Approx. 330 g Approx. 480 g/Approx. 360 g
Pre-wired connector
models (0.5 m)
Approx. 170 g/Approx. 110 g Approx. 200 g/Approx. 140 g
Materials Case and cover: Polybutylene terephthalate, Optical window: Glass, Cable: PVC
Accessories Instruction sheet, Laser warning label (English), and FDA certification label

Note: Refer to the table given below for the ratings and specifications of Sensors with Class 1 lasers.
*1. The values were measured at the center of the sensing distance using OMRON’s standard sensing object (white
*2. Classified as Class 2 by IEC60825-1 criteria in accordance with the FDA standard provisions of Laser Notice No. 50.
       CDRH registration has been completed. (Center for Devices and Radiological Health) (Accession Number: 1210040)
*3. Spot diameter: Defined as 1/e2 (13.5%) of the central intensity at the measurement center distance.
       False detections can occur in the case there is light leakage outside the defined region and the surroundings of the
       target object have a high reflectance in comparison to the target object.
       Accurate measurements may not be possible for workpieces that are smaller than the spot diameter.
*4. IP67 protection applies to the connector on pre-wired connector models if an extension cable is connected.
*5. Use a Pre-wired Connector Model together with an Extension Cable (10 m or 20 m).

Ratings and Specifications of Sensors with Class 1 lasers (ZX0-LD[]L)

The ratings and specifications that are different from those of the Sensors with Class 2 lasers are given below.

Model ZX0-LD50A61L/ZX0-LD50A81L
FDA Class Class1 0.24 mW max.
IEC/EN Class Class1 0.24 mW max.
Ambient illumination Illumination on received light surface 5,000 lx
or less (incandescent light)
Illumination on received light surface 2,500 lx
or less (incandescent light)
Connection method Pre-wired model (2 m)
Accessories Instruction sheet and Explanatory label (English), FDA certification label

Accession Number: 1210040