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Ultra-small U-shaped Micro Photoelectric Sensor[Amplifier Built-in] PM-24 (Discontinued Products)

Cautions For Use

  • Never use this product as a sensing device for personnel protection.
  • In case of using sensing devices for personnel protection, use products which meet laws and standards, such as OSHA, ANSI or IEC etc., for personnel protection applicable in each region or country.
  • Make sure to connect terminals correctly as the sensor does not incorporate a reverse polarity protection circuit.
    Further, the output is not incorporated with a short-circuit protection circuit. Do not connect it directly to a power supply or a capacitive load. Faulty wiring may result in damage.

Mounting

  • When fixing the sensor with screws, use M2 screws and the tightening torque should be 0.15 N·m or less.
    Further, use small, round type plain washers. (ø4.3 mm ø0.169 in)
    When using the optional mounting screw set MS-M2, a spring washer is included.

Mounting
  • 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.

Cable extension

  • Cable extension is possible up to an overall length of 100 m 328.084 ft with a 0.3 mm2, or more, cable.
    However, since a voltage drop shall occur due to the cable extension, ensure that the power supply voltage at the end of the cable attached to the sensor is within the rating.

Cable extension

But, when the overall cable length, including the cable attached to the sensor, is as given below, there is no need to confirm the voltage.

Conductor cross section
area of
extension cable
Total cable length
0.08 to 0.1 mm2 Up to 5 m 16.404 ft
0.2 mm2 Up to 10 m 32.808 ft
0.3 mm2 Up to 20 m 65.617 ft

Others

  • Since the sensor is intended for use inside machines, no special countermeasures have been taken against extraneous light. Take care that extraneous light is not directly incident on the beam receiving section.

  • Do not use during the initial transient time (50 ms) after the power supply is switched on.
  • 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.)
  • Take care that the flexibility of the PM-□24-R cable is lost if the ambient temperature is -10℃ +14 ℉ or less.

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