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L-GAGE
LT7 Long-Range Time-of-Flight Laser Sensor
®
Datasheet
Self-contained Retroreflective- and Diffuse-mode Laser Distance Sensors
WARNING: Not To Be Used for Personnel Protection
Never use this device as a sensing device for personnel protection. Doing so could lead to serious injury or
death. This device does not include the self-checking redundant circuitry necessary to allow its use in personnel
safety applications. A sensor failure or malfunction can cause either an energized or de-energized sensor output
condition.
Models
Models
Sensing Mode
LT7PIDQ
Diffuse
LT7PLVQ
Retroreflective
Overview
Status
Indicator
LEDs
2-Line
Digital
Display
Programming
Buttons
1 Requires a mating cable.
2 Diffuse-mode range specified using a 90% reflective white card. Retroreflective-mode range specified using the specified retroreflective target.
Original Document
120244 Rev. C
•
Diffuse model with extremely long distance ranges:
◦
Up to 3 meters with black target
◦
Up to 7 meters with gray target
◦
Up to 10 meters with white target
•
Retroreflective model range: up to 250 meters
•
Visible pilot laser for easy alignment
•
Multiple outputs in each model: discrete outputs can be used for precision
background suppression; and alarm outputs together with display provide easy
troubleshooting
◦
Diffuse models: Two discrete (PNP) plus 2 alarm outputs, and 4-20 mA
analog
◦
Retroreflective models: Two discrete (PNP) plus 2 alarm outputs
•
Fast, easy-to-use TEACH-mode programming via integrated push-buttons or serial
interface (no potentiometer adjustments)
•
Ongoing LCD display of sensing distance selectable in millimeters or one-
hundredths of one inch
•
RS422- or SSI-compatible serial connection options
Cable 1
Laser Class
Class 2 pilot laser;
Integral 12-pin M16
Class 1 sensing laser
QD connector
The sensor has an LCD display and 3 push buttons, which control all programming
functions. Serial interface programming can also be accomplished via SSI or RS422.
Four status indicator LEDs on the sensor front/top provide ongoing status of power and
outputs.
The sensor has a 2-line LCD display and four LED indicators for ongoing indication of
sensing status: Power ON, Alarm, and Outputs 1 and 2.
In Run mode, the current measured value is displayed in the top line of the sensor's
display, in millimeters or hundredths of an inch, as selected.
16 February 2017
Sensing Range 2
0.5 m to 10 m (20 in to 33 ft)
2 PNP plus 2
0.5 m to 250 m (20 in to 820 ft)
Discrete
Analog Output
Outputs
4 mA to 20 mA
Alarm
N/A
120244
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Table of Contents
Related Manuals for Banner L-GAGE LT7 Series
Summary of Contents for Banner L-GAGE LT7 Series
- Page 1 L-GAGE LT7 Long-Range Time-of-Flight Laser Sensor ® Datasheet Self-contained Retroreflective- and Diffuse-mode Laser Distance Sensors • Diffuse model with extremely long distance ranges: ◦ Up to 3 meters with black target ◦ Up to 7 meters with gray target ◦ Up to 10 meters with white target •...
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Page 2: Measurement Selection
® L-GAGE LT7 Long-Range Time-of-Flight Laser Sensor Push Button Functions • Run mode: Switch from Run mode to Programming mode • Programming mode: Select function and move down one menu level • Programming mode: Record value and move up one menu level •... -
Page 3: Offset Value
® L-GAGE LT7 Long-Range Time-of-Flight Laser Sensor DIST mm DIST in 1475 32512 The sensor measures 1475 mm The sensor measures 325.12 inches distance to target. distance to target. Figure 2. Run Mode Display Offset Value An offset value can be entered or taught. It increases or decreases the measured value to compensate for a mounting position that does not correspond with the zero-point of the sensor. -
Page 4: Discrete Outputs
® L-GAGE LT7 Long-Range Time-of-Flight Laser Sensor Output 1 Output 1 Teach Output 2 Point 1 Output 2 Teach Point 2 Near Near Teach Sensing Sensing Sensing Sensing Point Range Range Range Range Figure 4. Each discrete output has its own limit for background Figure 5. -
Page 5: Installation
® L-GAGE LT7 Long-Range Time-of-Flight Laser Sensor User Interface Laser Lenses Target Emitter Emitter Circuitry Microprocessor Analog Time-of-Flight Signal Engine Processing Receiver Element Output Circuitry Figure 6. Theory of Operation Description of Laser Classes Class 1 (Infrared Sensing Laser) Class 2 (Visible Pilot Laser) Lasers that are safe under reasonably Lasers that emit visible radiation in the foreseeable conditions of operation,... - Page 6 ® L-GAGE LT7 Long-Range Time-of-Flight Laser Sensor Aligning the Sensor With an Alignment Aid The alignment aid is useful for the precise alignment of the retroreflective sensor at long distances. With the alignment aid, it is easier to adjust the visible pilot laser spot, even when the spot is on a retroreflective target that is more than 50 m (160 ft) away.
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Page 7: Wiring Diagrams
® L-GAGE LT7 Long-Range Time-of-Flight Laser Sensor Wiring Diagrams Name Cable Description Color 18–30 V dc White RS422: Transmitter data / SSI: Data – Brown Discrete Output 1 load 1 Green RS422: Receiver data / SSI: Clock + red/bu load 2 analog Yellow Analog Output 4 mA to 20 mA... -
Page 8: Accessing The Programming Mode
® L-GAGE LT7 Long-Range Time-of-Flight Laser Sensor • Visible Pilot Laser OFF. • Measuring Laser ON. Run Mode • Press light display backlight Password (Required only if Password option is ON. Factory preset is Password OFF. Main Menu • Visible Pilot Laser ON. to scroll RS422 •... -
Page 9: Entering The Password
® L-GAGE LT7 Long-Range Time-of-Flight Laser Sensor Press simultaneously to escape the menu. The sensor moves up one menu level at a time and may not save the new setting, depending on the programming procedure. Entering the Password If the sensor does not require a password (factory default setting), press from Run mode. - Page 10 ® L-GAGE LT7 Long-Range Time-of-Flight Laser Sensor Press to enter the TEACH-IN menu. The sensor displays the selected output. TEACH-IN > <SETQ1>. Press to scroll through the output options: <SETQ1>, <SETQ2>, or <ANALOG> (only for diffuse models). Press to select an output. The sensor displays the current output and mode selections.
- Page 11 ® L-GAGE LT7 Long-Range Time-of-Flight Laser Sensor Teaching Analog Output Limits The procedure for teaching analog output limits and discrete output limits is the same, except that the analog output has no hysteresis. The analog output has one unique function: the discrete output limits Q1.1 and Q1.2 can be copied. To copy the discrete output limits to the analog output, follow the steps below: Press to scroll to TEACH-IN >...
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Page 12: Serial Communications
® L-GAGE LT7 Long-Range Time-of-Flight Laser Sensor Press UNIT ->INCH or UNIT->MM. Press to toggle between millimeters and inches. The sensor is ready to accept the new setting. Select the distance measurement in millimeters or one- hundredth of one inch. The displayed measurements have no decimals. - Page 13 ® L-GAGE LT7 Long-Range Time-of-Flight Laser Sensor Serial Response Speed The sensor recalculates the distance measurement every 12 ms. This is not a moving average. A new average is calculated for the previous 12 ms of data. With the SSI output, the data can be read every 1.4 ms (possibly the same reading for 8 or 9 readings, followed by a change). For the most accurate prediction of the target location, take a sample at the 1.4 ms read-rate of the SSI and determine when the change happens.
- Page 14 ® L-GAGE LT7 Long-Range Time-of-Flight Laser Sensor Command Data to LT7 Data from LT7 Meaning Execute Continuous Measurement Set and triggered by the next request for measured values Energy value 0 dB to -120 dB Gain Level Indicates the amount of received energy xxxxxxxxxx Get Serial Number Emitted as ASCII text (maximum 24 characters)
- Page 15 ® L-GAGE LT7 Long-Range Time-of-Flight Laser Sensor Command Data to LT7 Data from LT7 Meaning * 0, 1, 2 Discrete Output Q1 Mode 0: inactive 1: 1 switching point 2: 2 switching points 0, 1 Invert Discrete Output Q1 0: Q 1: Q inverted * Do not insert a period or comma.
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Page 16: Troubleshooting And Error Codes
® L-GAGE LT7 Long-Range Time-of-Flight Laser Sensor Duration of clock signal: minimum 2 μSec = 500 kHz; maximum 13 μSec = 77 kHz Clock Delay time maximum 360 ns Minimum time between last rising edge and reloading of SSI, approximately 24 μSec MSB (here Gray Code) 24-bit Transmission G1 = second LSB;... -
Page 17: Specifications
12 ms EN 60947-5-2 Linearity Certifications ± 10 mm Resolution/Repeatability LT7PLVQ: ± 2 mm LT7PIDQ: ± 4 mm Color Sensitivity LT7PLVQ (diffuse models) Not applicable Color Sensitivity LT7PIDQ Contact Banner Engineering Corp. P/N 120244 Rev. C www.bannerengineering.com - Tel: +1-763-544-3164... - Page 18 ® L-GAGE LT7 Long-Range Time-of-Flight Laser Sensor Dimensions 42.0 mm 1.65" 95.0 mm 3.74" Operating Mode Operating Mode Laser Class 1 (Infrared) Laser Class 1 (Infrared) LT7PIDQ LT7PIDQ Setup Mode Setup Mode Laser Class 2 (Visible - Red) Laser Class 2 (Visible - Red) Do not stare into beam Do not stare into beam...
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Page 19: Mounting Brackets
® L-GAGE LT7 Long-Range Time-of-Flight Laser Sensor Mounting Brackets SMBLT7 SMBLT7F 20° 14.0 mm • Right-angle bracket • Fine-adjust accessory for (0.55") model SMBLT7 bracket • 300 series stainless steel Opening for set screw (SMBLT7 bracket sold (included) Ø 3.0 mm •... - Page 20 MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE), AND WHETHER ARISING UNDER COURSE OF PERFORMANCE, COURSE OF DEALING OR TRADE USAGE. This Warranty is exclusive and limited to repair or, at the discretion of Banner Engineering Corp., replacement. IN NO EVENT SHALL BANNER ENGINEERING CORP. BE LIABLE TO BUYER OR ANY OTHER PERSON OR ENTITY FOR ANY EXTRA COSTS, EXPENSES, LOSSES, LOSS OF PROFITS, OR ANY INCIDENTAL, CONSEQUENTIAL OR SPECIAL DAMAGES RESULTING FROM ANY PRODUCT DEFECT OR FROM THE USE OR INABILITY TO USE THE PRODUCT, WHETHER ARISING IN CONTRACT OR WARRANTY, STATUTE, TORT, STRICT LIABILITY, NEGLIGENCE, OR OTHERWISE.