L-GAGE LT3 Series—Dual Discrete

Overview

Precise long-range measurement sensors with two discrete outputs

  • Offers 12 to 24V dc supply voltage with two selectable NPN or PNP outputs
  • Provides diffuse models for background suppression up to 5 m
  • Features retroreflective models for long-range precision sensing up to 50 m
  • Provides push-button TEACH-mode programming for custom sensing windows
  • Includes remote programming for added security and convenience
  • Offers programmable output response for three speeds
  • Features bright, visible laser spot to simplify alignment

Product Specifications

Supply Voltage and Current12 to 24V dc (10% max. ripple); 108 mA max. @ 24V dc or [2600/V dc] mA
Sensing RangeDiffuse:
90% white card:0.3 to 5 m
18% gray card:0.3 to 3 m
6% black card:0.3 to 2 m
Retroreflective:0.5 to 50 m, range is specified using one model BRT-TVHG-8x10P retroreflector
Sensing BeamTypical beam dia.:6 mm @ 3 m
Typical laser lifetime:75,000 hours
Diffuse:658 nm visible red IEC and CDRH Class 2 laser; 0.5 mW max. radiant output power
Retroreflective:658 nm visible red IEC and CDRH Class 1 laser; 0.15 mW max. radiant output power
Supply Protection CircuitryProtected against reverse polarity and transient voltages
Output ConfigurationDual NPN (current sinking) or PNP (current sourcing), selectable depending on wiring hookup
Output Rating100 mA max. OFF-state leakage current:less than 5 µA
Output saturation:
NPN:less than 200 mV @ 10 mA; less than 600 mV @ 100 mA
PNP:less than 1.2V @ 10 mA; less than 1.6V @ 100 mA
Output Protection CircuitryProtected against short circuit conditions
Output Response TimeFast:1 millisecond ON/OFF
Medium:10 milliseconds ON/OFF
Slow:100 milliseconds ON/OFF
Delay at Power-up1 second; outputs do not conduct during this time.
Color SensitivityDiffuse:
90% white to 18% gray:less than 10 mm
90% white to 6% black:less than 20 mm
Discrete Output HysteresisDiffuse:
Fast:10 mm
Medium:5 mm
Slow:3 mm
Retroreflective:
Fast:20 mm
Medium:10 mm
Slow:6 mm
Temperature EffectDiffuse:less than 2 mm/° C
Retroreflective:less than 3 mm/° C
Minimum Window SizeDiffuse:20 mm
Retroreflective:40 mm
Remote TEACH Input18 k ohms (65 k ohms @ 5V dc)
Remote TEACHTo TEACH:connect yellow wire to +5 to 24V dc
To disable:connect yellow wire to 0 to +2V dc (or open connection)
AdjustmentsResponse speed:Push button toggles between fast, medium and slow (see Output Response Time)
Window limits (analog or discrete):TEACH-mode programming of near and far window limits. Limits may also be taught remotely using TEACH input.
Laser ControlConnect red wire to +5 to 24V dc to enable laser beam; connect to 0 to +1.8V dc (or open connection) to disable; when sensor is powered laser enable time is 100 millisecond delay on enable, when sensor is powered.
IndicatorsGreen Power ON LED:indicates when power is ON, overloaded output and laser status
Yellow Output LED:indicates when discrete load output is conducting
Red Signal LED:indicates target is within sensing range and the condition of the received light signal
Yellow Speed LED:indicates the response speed setting
Red/Yellow TEACH LEDs:in programming mode; indicate active output(s)
ConstructionHousing:ABS/polycarbonate blend
Window:acrylic
Quick-disconnect:ABS/polycarbonate blend
Environmental RatingIP67; NEMA 6
Connections7-conductor (with drain) 2 m or 9 m shielded PVC-jacketed attached cable, or 8-pin Euro-style quick-disconnect fitting. QD cables are ordered separately.
Operating ConditionsTemperature:0° to +50° C
Relative humidity:90% @ 50° C (non-condensing)
Application Notes• For best accuracy, allow 30-minute warm-up before programming or operating

• Retroreflective performance specifications are based on use with supplied BRT-TVHG-8X10P high grade target. Results may vary with other retroreflective target materials.

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