Compact Sensors

97

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S18/M18 Series

S18, 20-250V ac

Models

Sensing

Mode/LED*

Range

Cable**

Output

Type

Excess

Gain

Beam

Pattern

Data

Sheet

S18AW3D

DIFFUSE

100 mm

2 m

LO

EGCD-25

(p. 435)

BPD-24

(p. 457)

116160

S18AW3DQ1

4-Pin Micro QD

S18RW3D

2 m

DO

S18RW3DQ1

4-Pin Micro QD

S18AW3DL

300 mm

2 m

LO

EGCD-26

(p. 435)

BPD-25

(p. 457)

S18AW3DLQ1

4-Pin Micro QD

S18RW3DL

2 m

DO

S18RW3DLQ1

4-Pin Micro QD

*

Infrared LED

** For 9 m cable, add suffix W/30 to the 2 m model number (example, S18AW3D W/30). A model with a QD requires a mating cable (see page 386).

S18 AC Specifications

Supply Voltage and Current

20 to 250V ac (50/60 Hz). Average current 20 mA. Peak current: 200 mA at 20V ac, 500 mA at 120V ac, 750 mA at

250V ac

Supply Protection Circuitry

Protected against transient voltages

Output Configuration

SPST solid-state ac switch; three-wire hookup; Light Operate (LO) or Dark Operate (DO), depending on model.

Light operate: Output conducts when the sensor sees its own (or the emitter’s) modulated light

Dark operate: Output conducts when sensor sees dark

Output Rating

300 mA max. (continuous) Fixed-field models: derate 5 mA/° C above +50° C;

Inrush capability: 1 amp for 20 milliseconds, non-repetitive

Off-state leakage current: less than 100 mA

On-state voltage drop: 3V at 300 mA ac; 2V at 15 mA ac

Output Protection Circuitry

Protected against false pulse on power-up

Output Response Time

Opposed Mode: 16 milliseconds ON, 8 milliseconds OFF; Polarized Retroreflective, Non-polarized

Retroreflective, Fixed-field, and Diffuse: 16 milliseconds ON/OFF

NOTE: 100 millisecond delay on power-up

Repeatability

Opposed Mode: 2 milliseconds; Polarized Retroreflective, Non-polarized Retroreflective, Fixed-field, and

Diffuse: 4 milliseconds. Repeatability and response are independent of signal strength.

Indicators

Two LEDs: Green and Yellow

Green ON steady: power to sensor is ON

Yellow ON steady: sensor sees light

Yellow flashing: excess gain marginal (1-1.5x) in light condition

Construction

Housings are thermoplastic polyester. Lenses are polycarbonate or acrylic; two jam nuts included.

Environmental Rating

S18 models: Leakproof design rated NEMA 6P, DIN 40050 (IP69K)

M18 models: Rated NEMA 6P (IP67)

Connections

2 m or 9 m attached cable, or 4 pin Micro-style quick-disconnect fitting. QD cables are ordered separately. See

page 386.

Operating Conditions

Temperature: -40° to +70° C

Relative humidity: 90% at 50° C (non-condensing)

Vibration and

Mechanical Shock

All models meet Mil. Std. 202F requirements. Method 201A (Vibration; frequency 10 to 60 Hz, max, double

amplitude 0.06-inch acceleration 10G). Method 213B conditions H&I (Shock: 75G with unit operating; 100G for

non-operation)

Certifications

R

Hookup Diagrams

Cabled Emitters: AC03 (p. 484)

Other Cabled Models: AC05 (p. 485)

QD Emitters: AC07 (p. 485)

Other QD Models: AC06 (p. 485)

(cont’d)

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S18 & M18

models

S18 models

only

S18 models

only