Compact Sensors

T18 Series

T18 DC Specifications

Supply Voltage and Current

10 to 30V dc (10% max. ripple); Supply current (exclusive of load current):

Opposed Mode Emitters: 25 mA

Opposed Mode Receivers: 20 mA

Polarized Retroreflective: 30 mA

Non-polarized Retroreflective: 25 mA

Diffuse: 25 mA

Fixed-field: 35 mA

Supply Protection Circuitry

Protected against reverse polarity and transient voltages

Output Configuration

Solid-state complementary (SPDT) dc switch; NPN (current sinking) or PNP (current sourcing), depending on model.

The Dark Operate (DO) output may be wired as a normally open marginal signal alarm output, depending upon

hookup to the power supply.

Output Rating

150 mA max. (each) in standard hookup. When wired for alarm output, the total load may not exceed 150 mA;

Off-state leakage current: less than 1 mA at 30V dc;

On-state saturation voltage: less than 1V at 10 mA dc; <1.5V at 150 mA dc

Output Protection Circuitry

Protected against false pulse on power-up and continuous overload or short circuit of outputs

Output Response Time

Opposed: 3 milliseconds ON, 1.5 milliseconds OFF; Polarized Retroreflective, Non-polarized Retroreflective,

Fixed-field and Diffuse: 3 milliseconds ON/OFF

NOTE: 100 millisecond delay on power-up; outputs are non-conducting during this time

Adjustments

T18 Series infrared non-polarized retroreflective and diffuse mode models (only) have a single-turn rear-panel

SENSITIVITY control for adjustment of system gain (turn clockwise to increase)

Repeatability

Opposed: 375 microseconds; Polarized Retroreflective, Non-polarized Retroreflective, Fixed-field and

Diffuse: 750 microseconds. Repeatability and response are independent of signal strength.

Indicators

Two LEDs: Green and Yellow

Green ON steady: power to sensor is ON

Green flashing: output is overloaded (dc models only)

Yellow ON steady: Light Operate (LO) output is energized

Yellow flashing: excess gain marginal (1-1.5x) in light condition, LO output is energized

Construction

Housings are thermoplastic polyester. Lenses are polycarbonate or acrylic; one jam nut included

Environmental Rating

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

Connections

2 m or 9 m attached cable, or 4-pin Euro-style quick-disconnect fitting. QD cables are ordered separately. See page 380.

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

Emitters: DC03 (p. 476)

NPN Models: DC07 (p. 477)

PNP Models: DC08 (p. 477)