Banner L-GAGE LT7 Series User manual

Datasheet
Self-contained Retroreecve- and Diuse-mode Laser Distance Sensors
•Diuse 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
•Retroreecve model range: up to 250 meters
• Visible pilot laser for easy alignment
•Mulple outputs in each model: discrete outputs can be used for precision
background suppression; and alarm outputs together with display provide easy
troubleshoong
◦Diuse models: Two discrete (PNP) plus 2 alarm outputs, and 4-20 mA
analog
◦Retroreecve models: Two discrete (PNP) plus 2 alarm outputs
• Fast, easy-to-use TEACH-mode programming via integrated push-buons or serial
interface (no potenometer adjustments)
• Ongoing LCD display of sensing distance selectable in millimeters or one-
hundredths of one inch
• RS422- or SSI-compable serial connecon opons
WARNING: Not To Be Used for Personnel Protecon
Never use this device as a sensing device for personnel protecon. 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 applicaons. A sensor failure or malfuncon can cause either an energized or de-energized sensor output
condion.
Models
Models Sensing Mode Laser Class Cable1Sensing Range2Discrete
Outputs Analog Output
LT7PIDQ Diuse Class 2 pilot laser;
Class 1 sensing laser Integral 12-pin M16 QD connector 0.5 m to 10 m (20 in to 33 ) 2 PNP plus 2 Alarm 4 mA to 20 mA
LT7PLVQ Retroreecve 0.5 m to 250 m (20 in to 820 ) N/A
Overview
Status
Indicator
LEDs
2-Line
Digital
Display
Programming
Buttons
The sensor has an LCD display and 3 push buons, which control all programming
funcons. 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 indicaon 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.
1Requires a mang cable.
2Diuse-mode range specied using a 90% reecve white card. Retroreecve-mode range specied using the specied retroreecve target.
L-GAGE®LT7 Long-Range Time-of-Flight Laser Sensor
Original Document
120244 Rev. C 16 February 2017
120244

Push Buon Funcons
Enter
• Run mode: Switch from Run mode to Programming mode
• Programming mode: Select funcon and move down one menu level
• Programming mode: Record value and move up one menu level
• Manual Adjust: Move the cursor one posion to the le or end the entry when the cursor is at the far le
Le Arrow
• Run mode: Press to light display
• Programming mode: Scroll to the next menu posion to the le
• Manual Adjust: Decrease current digit by 1
• QuickSet menu: Enable TEACH-In of Q1
Right Arrow
• Run mode: Press to light display
• Programming mode: Scroll to the next menu posion to the right
• Manual Adjust: Increase current digit by 1
• QuickSet menu: Enable TEACH-In of Q2
ESC
Le Arrow and Right
Arrow simultaneously
• Escape: Cancel acve funcon and move up one menu level without saving the new values. Press both arrows simultaneously. The
previous value remains unchanged.
Sensing Beam
The sensor uses an infrared Class 1 laser for sensing and a visible, red Class 2 laser (pilot laser) for alignment. Both lasers are aimed at
the idencal target spot. The laser beams are collimated to focus on a compact spot, even at long sensing distances.
Diffuse
Retroreflective
10 m
50 m
100 m
250 m
10 m
6 m
4 m
3 x 10 mm
4 x 12 mm
10 x 20 mm
10 x 5 mm
10 x 5 mm
Ø 20 mm
Ø 100 mm
Ø 200 mm
Ø 500 mm
Figure 1. Light Spot Dimensions
Password
The Password funcon provides a measure of security for the sensor sengs. If Password is set to ON, the password must be entered
before the sensor is programmed. The password is 1234 and cannot be changed. Security is based on the requirement to know the
password entry procedure and the meout funcon. If the password is not entered within approximately 10 seconds, the sensor returns
to Run mode. Measuring connues in the background while the password is entered.
Measurement Selecon
Select measurement in millimeters or one-hundredths of an inch. Measurements are displayed without decimal points as shown in the
Run mode display. When measuring in inches, the decimal point is two places from the right.
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DIST mm
1475 DIST in 32512
The sensor measures 1475 mm
distance to target. The sensor measures 325.12 inches distance to target.
Figure 2. Run Mode Display
Oset Value
An oset value can be entered or taught. It increases or decreases the measured value to compensate for a mounng posion that does
not correspond with the zero-point of the sensor. For example, 3000 mm actual distance minus 1200 mm oset equals 1800 mm
adjusted output value.
The oset value can be up to 100,000 mm or the corresponding value in inches. The plus and minus symbols are selectable. The oset
value applies to all outputs. It reverts to 0 when the Factory Preset funcon is used.
Factory-Preset Condions
The sensor reverts to the following factory-preset condions:
TEACH-In:
Q1 and Q2 (discrete) — single switchpoint (full sensing range), ± 5 mm hysteresis
QA (analog) — Mode 1, rising (posive slope, full sensing range)
Oset — 0
Unit — mm
Serial – RS422
Password – OFF
Hysteresis: Manually adjustable in ± 1 mm steps,
symmetrically around the switching point.
(If upper limit is reached, limit value of
measurement range becomes the upper limit.)
Single-point switching
Two-point switching
Two main TEACH methods:
• Individually teach A1 and A2 limits via manual input.
• Copy Discrete Output limits to Analog.
NOTE: Analog A1 and A2 must be at least 300 mm apart.
Discrete Outputs (Q1 and Q2) –
Normally Closed
Normally Open
Normally Closed
Normally Open
Mode 1 – Positive Slope
Mode 2 – Negative Slope A1
A1 A2
A2
Analog Output (model LT7PIDQ only) –
Figure 3. TEACH mode opons for each output
Mulple Outputs
The sensing distance is entered manually or it can be taught with QuickSet and TEACH-In. Either one or two sensing condions may be
taught for each output.
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Output 1
Near
Sensing
Range
Teach
Point 2
Output 2
Far
Sensing
Range
Teach
Point 1
Figure 4. Each discrete output has its own limit for background
suppression
Output 1
Near
Sensing
Range
Output 2
Far
Sensing
Range
Teach
Point
Figure 5. The two discrete outputs share idencal limits for background
suppression but are complementary
Discrete Outputs
Output 1 and Output 2 can be congured idencally, or they can have dierent limits and conguraons. One or two sensing condions
can be taught for each output.
If one condion is taught, the output sets a switching threshold around which the selected hysteresis is applied.
The two-point TEACH result diers, depending on whether QuickSet or TEACH-In is used to set the limits. In QuickSet, the sensor
averages the two taught values, then centers a 200 mm window around the averaged point (100 mm to each side). The TEACH-In
window limits remain as taught, and the window can be any size.
The selected hysteresis is equally applied to each threshold and window near-limit and far-limit, no maer how they are taught.
Analog Outputs
Analog Limit 1 and Analog Limit 2 must be at least 300 mm apart. Individually teach 4 mA (A1) and 20 mA (A2) points or use the Copy
funcon (selectable in the Analog Output Mode menu) to copy the discrete limits (only the rst limits of Discrete Limit 1 and Discrete
Limit 2) to the analog output. When copying discrete limits to analog, Discrete Limit 1 and Discrete Limit 2 must be at least 300 mm
apart, or the sensor will not copy the limits. The order in which the limits are copied determines the analog output slope. For Mode 1
(posive slope) select:
• Q1, then Q2 — Limit Q1.1 becomes A1 (4 mA); Q2.1 becomes A2 (20 mA)
• Q2, then Q1 — Limit Q1.1 becomes A2 (20 mA); Q2.1 becomes A1 (4 mA)
Manual Adjust
Aer TEACH mode, use Manual Adjust or Edit to adjust the value for an output. Use Manual Adjust or Edit instead of TEACH mode to
input a precise limit value.
Theory of Operaon
A short electrical pulse drives a semiconductor laser diode to emit a pulse of light. The emied light is collimated through a lens, which
produces a very narrow laser beam. The laser beam bounces o the target, scaering some of its light through the sensor’s receiving
lens to a photodiode, which creates an electrical pulse. The me interval between the two electrical pulses (transming and receiving
the beam) is used to calculate the distance to the target, using the speed of light as a constant.
Mulple pulses are evaluated by the sensor’s microprocessor, which calculates the posion value. The outputs energize when the target
is located between the user-programmed window limits or when the preset switching threshold is crossed. Outputs are programmed
for a variety of funcons.
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Microprocessor
User
Interface
Emitter
Circuitry
Analog
Signal
Processing
Time-of-Flight
Engine
Output
Circuitry
Laser
Emitter Lenses Target
Receiver
Element
E
R
Figure 6. Theory of Operaon
Descripon of Laser Classes
Operating Mode
Laser Class 1
Setup Mode
Laser Class 2
Do not stare into beam
Class 1 (Infrared Sensing Laser)
Lasers that are safe under reasonably
foreseeable condions of operaon,
including the use of opcal instruments for
intrabeam viewing.
Reference 60825-1 Amend. 2 ©IEC:
2001(E), secon 8.2.
Class 2 (Visible Pilot Laser)
Lasers that emit visible radiaon in the
wavelength range from 400 nm to 700 nm
where eye protecon is normally aorded
by aversion responses, including the blink
reex. This reacon may be expected to
provide adequate protecon under
reasonably foreseeable condions of
operaon, including the use of opcal
instruments for intrabeam viewing.
Reference 60825-1 Amend. 2 ©IEC:
2001(E), secon 8.2.
Installaon
Aligning the Sensor
Align the sensor with or without an alignment aid.
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Aligning the Sensor With an Alignment Aid
The alignment aid is useful for the precise alignment of the retroreecve
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 retroreecve target
that is more than 50 m (160 ) away.
Sight hole
Focus screw
1. Mount the sensor.
2. Ax the alignment aid over the laser emiers on the front of the sensor.
3. Acvate any item on the Main menu to turn on the pilot laser.
4. Aim the sensor at the reector.
5. Look into the sight hole from about 50 mm (2 in) away, rotang the barrel as needed.
6. Turn the focus screw located opposite the sight hole to focus the laser spot as sharply as possible.
7. Adjust the sensor or target posion unl the laser spot is centered on the target.
8. Tighten the mounng screws and recheck the alignment.
9. Remove the alignment aid.
While the alignment aid scope is in place, the displayed measurements are inaccurate. The pilot LED is visible only through the sight
hole of the alignment aid; the red laser light cannot be seen on the target or another surface.
Aligning the Sensor Without an Alignment Aid
The measuring (sensing) laser is located where the pilot laser spot is.
For ne adjustment, use bracket SMBLT7 with the ne-adjust accessory kit SMBLT7F for an angle of up to ±3° in both X and Y axes.
1. Use the bracket SMBLT7 to mount the sensor.
2. Select any item on the Programming menu and acvate it.
The pilot laser is on.
3. Hold the retroreector or target at a short distance. For example less than 1 m (3 ) and verify that the laser light-spot is centered
on it.
4. Move the retroreector or target to its nal posion, adjust the posion as needed, and verify that the laser light-spot remains
centered on it.
5. Tighten the screws of the bracket.
Installing the Mounng Brackets SMBLT7 and SMBLT7F
These instrucons are for the mounng bracket SMBLT7 and the ne-adjust accessory mounng bracket SMBLT7F.
1. Align the pins on the ne-adjust accessory bracket with the holes on the mounng bracket.
2. Bolt the ne-adjust accessory bracket to one or both angles of the mounng bracket.
3. Bolt the mounng bracket onto the mounng surface of the sensor.
4. Loosen the ne-adjust accessory bracket to adjust the laser sensor's alignment with the target.
Laser sensor and target are aligned.
5. Tighten all bolts.
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Wiring Diagrams
red 18–30 V dc
Alarm Output 1 (Qs)
Alarm Output 2 (Qp)
RS422: Tx+ SSI: Data+
RS422: Rx+ SSI: Clock+
RS422: Tx– SSI: Data–
RS422: Rx– SSI: Clock–
No Connection
No Connection for Retro models
+
–
bu
bn
red/bu
ye
gy
pk
wh
gn
bk
gy/pk
vt
load 1
load 2
4-20 mA
Pin Name Cable
Color Descripon
A TX+ White RS422: Transmier data / SSI: Data
+
B Q1 Brown Discrete Output 1
C RX+ Green RS422: Receiver data / SSI: Clock +
D analog Yellow Analog Output 4 mA to 20 mA
E Qs Gray Alarm Output 1
F Qp Pink Alarm Output 2
G V+ Red +18 V dc to 30 V dc
H RX- Black RS422: Receiver data / SS1: Clock –
J NC Violet
K TX- Gray/Pink RS422: Transmier data / SS1: Data
–
L Q2 Red/Blue Discrete Output 2
M GND Blue 0 V (GND)
Installaon Notes
Some targets pose specic problems for sensing distances. For example, targets with a stepped plane facing the sensor, a boundary line,
or rounded targets. Suggested sensor orientaons for typical targets are below.
Recommended Sensor Orientaon Not Recommended
Sensor Programming
The sensor is programmed using three programming buons and the LCD display or via RS422- and SSI-compable serial interface
connecons.
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Mode Q1
Teach-In
(Set Q1)
Teach 1.1 Teach 1.2 Hyst 1
Teach-In
(Setup)
Mode Q2
Teach-In
(Set Q2)
Teach 2.1 Teach 2.2 Hyst 2 Mode Analog
Teach-In
Analog
Copy Q>A Teach A1 Teach A2
Q1 Q2
QuickSet
(Enter)
4564 mm
Q1 |||| q2
Factory
(Preset)
Run Mode
Main Menu
Factory > OK
RS422
(see page 13)
Unit
(MM)
Unit > mm Unit > inch
Password
(OFF)
Password (OFF) Password (ON)
Serial
(RS422)
Serial > SSI
Serial > Ext. Bus*
Serial > RS422
Password (Required only
if Password option is ON.
Factory preset is Password
OFF.
• Visible Pilot Laser OFF.
• Measuring Laser ON.
• Press or to
light display backlight
• Visible Pilot Laser ON.
• Measuring Laser ON.
• Display backlight ON.
Use or to scroll
between Main Menu
selections.
Use or to
scroll between
selections.
or or or
or
or
Offset
(0)
Offset nnnn Offset > clear?
or or or or
*Ext. Bus requires specialized sensor; not currently available.
Output 1
Menu
Output 2
Menu
Analog Output
Menu
Figure 7. Programming Menu
Accessing the Programming Mode
When Password is set to OFF (factory default seng), the sensor will proceed to the Main menu. To access the Programming mode
with the programming buons, follow the step below:
Press from Run mode.
• The LCD display lights up
• The visible red pilot laser turns ON
• The measurement laser stays ON, alternang with the pilot laser
• The sensor proceeds to QuickSet on the Main menu
Teaching the Outputs with QuickSet
The received signal value is displayed as a bar graph: the more bars, the stronger the received signal. Output Q1 and output Q2 are
shown as either ON or OFF by the status indicator LEDs and by the leer Q, which is capitalized (Q1 = Output 1 is ON) or lowercase (q1 =
Output 1 is OFF).
To teach the current condions to the outputs with QuickSet, follow the steps below:
1. Press to teach the current condion to output Q1.
2. Press to teach the current condion to output Q2.
3. Press to save the seng.
4. Press
ESC
to exit the TEACH-IN menu.
The TEACH-IN menu also has other programmed TEACH properes.
Accessing Manual Adjust
To adjust the sensor output values with the programming buons, aer TEACH-IN and pressing Enter to save, follow the steps below:
1. Press or to access Manual Adjust.
The cursor ashes on the fourth digit from the le, as shown on the LCD display.
2. Press to decrease or to increase the value by one digit.
3. Press to save the value and to move the cursor to the next posion. Repeat Step 2 and Step 3 unl the cursor is on the rst digit
on the le.
4. Press to save the manually adjusted and to move up one menu level.
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5. Press and simultaneously to escape the menu.
The sensor moves up one menu level at a me and may not save the new seng, depending on the programming procedure.
Entering the Password
If the sensor does not require a password (factory default seng), press from Run mode. The sensor will proceed to QuickSet on
the Main menu. If a password is required, follow the steps below:
1. Press from Run mode.
The sensor waits for the password: 1234. The cursor ashes on the fourth digit from the le. If the password is not entered within
10 seconds, the sensor returns to Run mode.
2. Press four mes.
The sensor inserts the number 4 in the fourth digit locaon from the le.
3. Press
The ashing cursor moves to the third digit locaon from the le.
4. Press three mes.
The sensor inserts the number 3 in the third digit locaon from the le.
5. Press
The ashing cursor moves to the second digit locaon from the le.
6. Press two mes.
The sensor inserts the number 2 in the second digit locaon from the le.
7. Press
The ashing cursor moves to the rst digit locaon on the le.
8. Press one me.
The sensor displays PASSWORD 1234 and the message PASSWORD OK!.
9. Press to save the password.
The sensor proceeds to QuickSet on the Main menu.
Accessing QuickSet
Teach the current condions to output Q1 and output Q2 with QuickSet. To locate and access Quickset, follow the steps below:
1. Press or to scroll through the Main menu: QuickSet, TEACH-IN, OFFSET, UNIT, SERIAL, RS422, PASSWORD, and FACTORY
<PRESET>.
2. When QuickSet is highlighted, press .
The sensor enters QuickSet.
3. Teach the current condion.
•Press to teach output Q1.
•Press to teach output Q2.
The current measurement value is displayed in the top line of the display. The received signal value is displayed as a bar graph: the
more bars, the stronger the received signal. Output Q1 and output Q2 are displayed as either ON or OFF by the status indicator LEDs
and by the leer Q, which is capitalized (Output 1 is ON) or lowercase (Output 1 is OFF).
4. Save or reject the sengs.
•Press to save the seng. The sensor returns to the Main menu.
• Press Escape to move up one menu level. (Use Escape throughout the Programming mode if needed.)
Teaching and Manually Adjusng Discrete Limits
To enter the TEACH-IN menu and to teach discrete limits to the sensor outputs, follow the steps below:
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1. Press to enter the TEACH-IN menu.
The sensor displays the selected output. TEACH-IN > <SETQ1>.
2. Press or to scroll through the output opons: <SETQ1>, <SETQ2>, or <ANALOG> (only for diuse models).
3. Press to select an output.
The sensor displays the current output and mode selecons.
4. Press or to scroll through Output 1 opons: Mode Q1, TEACH 1.1, TEACH 1.2, HYST 1.
The sensor displays the TEACH opons for the selected output.
5. Press to view the output mode opons.
The sensor displays an arrow to indicate that the opons can be viewed.
6. Press or to scroll through the output mode opons.
7. Press to select an output mode opon.
The sensor saves the selected output mode opon.
8. Press or to scroll through Output 1 opons: TEACH 1.1, <203>.
The sensor again displays TEACH opons for the selected output.
9. Press to select an opon: TEACH 1.1, 203.
The sensor is ready to learn Limit 1.
10. Press to teach the target condion.
The sensor saves the Limit 1 seng and returns to the Output 1 menu level.
11. Press to access Manual Adjust.
12. Press to decrease or to increase the value of each digit.
The ashing cursor indicates the digit is acve, starng with the fourth digit locaon from the le.
13. Press to select the digit and move it to the le by one digit locaon.
14. Press when the cursor ashes on the rst digit on the le and the value is correct.
The sensor saves the seng and returns to the Output 1 menu level.
15. Press to teach the Limit 1.2 from the Output 1 menu. TEACH 1.2 > <12000>.
The sensor again displays the TEACH opons for the selected output. Repeat the procedure for Limit 1.1.
16. Press to select the Hysteresis funcon.HYST 1 > <±005> .
The ashing cursor indicates that the digit is acve, starng with the fourth digit locaon from the le. The minimum factory default
seng for hysteresis is ± 005. The maximum seng for hysteresis is ± 254 mm (± 9.99 in).
17. Press to decrease and to increase the value of each digit.
18. Press to select the digit and move it to the le by one digit locaon.
19. Press when the cursor is on the rst digit on the le and the value is correct.
•HYST 1 > <±254> if the value is valid.
•HYST 1 > Limited! if the value is outside accepted limits.
The sensor saves the seng and returns to the HYST 1 menu level.
20. Press or to return to other Output 1 funcons or press Escape to move up one menu level.
The TEACH procedure for Output 1 and Output 2 is the same. If the value is outside accepted limits, the sensor does not save the new
seng.
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