Datasheet

Self-contained photoelectric sensors

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10 to 30 V DC with bipolar NPN/PNP outputs

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Signal strength or output indicator

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2 m or 9 m integral cable, or Euro-style quick-disconnect fitting

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18 mm threaded lens mount on some models

WARNING:

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Do not use this device for personnel protection

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Using this device for personnel protection could result in serious injury or death.

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This device does not include the self-checking redundant circuitry necessary to allow its use in

personnel safety applications. A device failure or malfunction can cause either an energized (on) or de-

energized (off) output condition.

Models

Integral 2 m (6.5 ft) unterminated cable models are listed.

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To order the 9 m (30 ft) PVC cable model, add the suffix "W/30" to the cabled model number. For example, SM31EW/30.

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To order the 4-pin M12/Euro-style QD models, add the suffix “QD” to the model number. For example, SM31EQD.

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To order the 150 mm (6 in) cable with QD, add the suffix “QDP” to the model number. For example, SM31EQDP.

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To order a 0.3 ms response time model, add the suffix “MHS” to the model number. For example, SM31EMHS.

Sensing Mode

Range

LED

Model

OPPOSED

Opposed Emitter

3 m (10 ft)

Infrared, 880 nm

SM31E

Opposed Receiver

SM31R

Opposed Emitter - Long Range

30 m (100 ft)

SM31EL

Opposed Receiver - Long Range

SM31RL

OPPOSED

Opposed Emitter - Clear Plastic Detection

0 to 300 mm (0 to 12 in) Actual range varies,

depending on the light transmission properties

of the plastic material being sensed.

Visible red, 650 nm

SM31EPD

Opposed Receiver - Clear Plastic Detection

SM31RPD

RETRO

Non-Polarized Retroreflective

5 m (15 ft)

SM312LV

P

POLAR RETRO

Polarized Retroreflective

55 mm to 2 m (2 in to 7 ft)

SM312LVAG

Extended-Range Polarized Retroreflective

10 mm to 3 m (0.4 in to 10 ft)

SM312LP

DIFFUSE

Diffuse

380 mm (15 in)

Infrared, 880 nm

SM312D

300 mm (12 in)

SM312DBZ

Divergent Diffuse

130 mm (5 in)

SM312W

CONVERGENT

Convergent

16 mm (0.65 in) Focus

SM312C

43 mm (1.7 in) Focus

SM312C2

MINI-BEAM® DC Voltage Series Sensor

Original Document

69943 Rev. G

21 March 2022

69943