L-GAGE
®
LT7 Long-Range Time-of-Flight Sensor
P/N 120244
17
Banner Engineering Corp.
•
Minneapolis, MN U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
SSI Cable Length
Cable Length
< 25 m
< 50 m
< 100 m
< 200 m
< 400 m
Baud Rate
< 500 kHz
< 400 kHz
< 300 kHz
< 200 kHz
< 100 kHz
SSI Cable
The maximum baud rate for reliable data transfer depends on the cable length (see
table). The shielded connection cable is connected to the sensor connector and the
ground terminal of the control cabinet.
CAUTION
. . .
This
sensor contains no user-
serviceable components.
Do not attempt to repair.
Incorrect component values may produce
hazardous laser radiation levels.
!
LCD Error
Message
Out (Active Low)
Bit
Meaning
Qs
Qp
7
6
5
4
3
2
1
0
BLINDING
Active
0
1
0
0
0
0
0
0
Internal error or ambient light too strong
LAS. ERR.
Active
Active
1
0
0
0
0
0
0
0
Measurement laser faulty – repair or
replace sensor
LOW VOLT
Active
Active
0
0
0
0
0
1
0
0
Voltage too low or error in measurement
of supply voltage
NO VALUE
0
0
0
0
0
0
0
0
First measurement after switching ON –
sensor not yet ready. Message disappears
automatically when ready (after 300 ms).
PLL UNLOCKED
Active
Active
0
0
0
0
0
0
1
0
Counter error – repair or replace sensor
Active
0
0
1
0
0
0
0
0
Temperature out of acceptable range
(below -10°C or above +70°C)
OVERTEMP
Active
(Laser
OFF)
Active
(Laser
OFF)
0
0
1
0
1
0
0
0
Operating temperature too high (above
+85°C within housing); measurement
laser switches OFF. Switch sensor off;
sensor may operate after a cool-down
period.
Dist (mm)
> Maximum
Active
0
0
0
1
0
0
0
0
No target in range or sensor badly
aligned
Troubleshooting; Error Codes
In the event of errors, corresponding error messages appear on the display and the
error outputs Qs and Qp (active low) are set according to the table below.
Multiple errors may simultaneously exist. The error status may be interrogated via the
RS422 “GSI” command. (For example, if a too-low supply volatge causes a counter
error, the GSI command would report “00000110”.)
