Specifications

Type Ultra-small
With flexible cable
Model No. NPN output PM-□24 PM-□24-R
PNP output PM-□24P
Sensing range 5 mm 0.197 in (fixed)
Minimum sensing object 0.8 x 1.8 mm 0.031 x 0.071 in opaque object
Hysteresis 0.05 mm 0.002 in or less
Repeatability 0.03 mm 0.001 in or less
Supply voltage 5 to 24 V DC ±10 % Ripple P-P 10 % or less
Current consumption 15 mA or less
Output <NPN output type>
NPN open-collector transistor
• Maximum sink current: 50 mA
• Applied voltage: 30 V DC or less (between output and 0 V)
• Residual voltage: 0.7 V or less (at 50 mA sink current), 0.4 V or less (at 16 mA sink current)<PNP output type>
PNP open-collector transistor
• Maximum source current: 50 mA
• Applied voltage: 30 V DC or less (between output and + V)
• Residual voltage: 0.7 V or less (at 50 mA source current), 0.4 V or less (at 16 mA source current)
Utilization category DC-12 or DC-13
Output operation Incorporated with 2 outputs: Light-ON / Dark-ON
Response time Under light received condition: 20 µs or less
Under light interrupted condition: 100 µs or less
(Response frequency: 1 kHz or more) (Note 2)
Operation indicator Vermilion LED (lights up under light received condition)
Pollution degree 3 (Industrial environment)
Ambient temperature
(Note 3, 4)
–25 to +55 ℃ –13 to +131  (No dew condensation or icing allowed),
Storage: –30 to +80 ℃ –22 to +176 
Ambient humidity 35 to 85 % RH, Storage: 35 to 85 % RH
Ambient illuminance Fluorescent light: 1,000 ℓx at the light-receiving face
EMC EN 60947-5-2
Voltage withstandability 1,000 V AC for one min. between all supply terminals connected together and enclosure
Insulation resistance 50 MΩ, or more, with 250 V DC megger between all supply terminals connected together and enclosure
Vibration resistance 10 to 2,000 Hz frequency, 1.5 mm 0.059 in amplitude in X, Y and Z directions for two hours each
Shock resistance 15,000 m/s2 acceleration (1,500 G approx.) in X, Y and Z directions for three times each
Emitting element Infrared LED (Peak emission wavelength: 940 nm 0.037 mil, non-modulated)
Material Enclosure: PBT, Slit cover: Polycarbonate
Cable 0.09 mm2 4-core cabtyre cable [PM-□24-R: 0.1 mm2 flexible, oil and heat resistant cabtyre cable (Note 5)], 1 m 3.281 ft long
Cable extension Extension up to total 100 m 328.084 ft is possible with 0.3 mm2, or more, cable.
Weight Net weight: 10 g approx.

Notes:

1) Where measurement conditions have not been specified precisely, the conditions used were an ambient temperature of +23 ℃ +73.4 ℉.
2) The response frequency is the value when the disc, given in the figure below, is rotated.
3) In case the PM-24 series is used at an ambient temperature of +50 ℃ +122 ℉, or more, make sure to mount it on a metal body.
4) Take care that the flexibility of the PM-□24-R cable is lost if the ambient temperature in –10 ℃ +14 ℉ or less.
5) The cable of PM-□24-R is a flexible cable usable on a moving base. When the sensor is mounted on a moving base, fix the sensor cable joint so that stress is not applied to it. (Models other than the PM-□24-R cannot be used on a moving base.)