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75.5847.03 LZR-U920_U921 20191125

TROUBLESHOOTING

No blue LED

No power

Check cable and connection.

Polarity of power supply is inverted

Check the polarity of the power supply.

Orange LED is on

Power supply voltage exceeds acceptable 

limits

Check power supply voltage.

Sensor exceeds temperature limits

Verify the temperature of the environment. Protect the 

sensor from sunlight using a cover, if necessary.

Internal error

Wait a few seconds. 

If the LED remains ON, reset the power supply. 

If the LED turns on again, replace the sensor.

LED 2 is permanently 

red

Faulty wiring

Verify connections (pins 6 and 7).

LED 2 flashes red

Faulty wiring

Verify connections (pins 6 and 7).

Technology:

laser scanner, time-of-flight measurement

Measurement range:

max 65 m (213 ft)  [10 m (30 ft) @  2% remission factor, 30 m (98 ft) @  10% remission factor]

Number of planes:

LZR

®

-U920: 

max. 

4* / LZR

®

-U921: 1

* These parameters can be configured via the 

RS 485 communication interface.

For more information on the existing options, 

see Application Note “LZR®-U920/U921 

Protocol“ (76.0019).

Number of points/plane:

max. 274*

Angular resolution:

min. 0.3516 °*

Angular coverage:

max. 96 °*

Rotating speed:

900 turns/min

Scanning frequency:

LZR

®

-U920: 

15 

Hz / LZR

®

-U921: 60 Hz

Remission factor:

> 2 %

Laser emission characteristics:

IR laser:  wavelength 905 nm; output power 0.10mW (CLASS 1)
Visible laser:  wavelength 635 nm; output power 0.95mW (CLASS 2)

Supply voltage:

10 – 35 V DC @ sensor side 

Power consumption:

< 5 W

Peak current at power-on:

1.8 A (max. 80 ms @ 35 V)

Serial communication

Type

Interface:

Communication mode:

Transmission speed:
Topology:

Symbol coding:

File type:

see Application Note LZR

®

-U920/U921 Protocol (76.0019)

asynchronous
RS 485

half-duplex

460800 bit/sec (max: 921600 bit/sec)

point to point

1 start bit, 1stop bit, no parity bit

8 bits

Cable length:

3 m (10 ft)

Input:

Max. contact voltage: 
Voltage threshold:

1 optocoupler (galvanic isolated - polarity free)

30 VDC (over-voltage protected)

Log. H: > 8 V DC    Log. L: < 3 V DC

LED signal:

2 bi-colored (red/green) LEDs: function status

1 blue LED: power-on status
1 orange LED: error status

Dimensions:

125 mm (5.00 in) (D) x 93 mm (3.66 in)  (W) x  76 mm (2.75 in) (H)

Material/Color:

PC/ASA, black

Protection degree:

NEMA 4 / IP65

Temperature range:

powered: -22 – 140 °F (-30 – 60 ºC)     unpowered: 14 – 140 °F (-10 – 60 ºC)

Humidity:

0-95 % non-condensing

Vibrations:

< 2 G 

Pollution on front screens:

max. 30 %; homogenous

Norm conformity:

IEC 60529:2001; IEC 60825-1:2007 Laser Class 1&2; IEC 60950-1:2005
IEC 61000-6-2:2005 EMC - Industrial level; IEC 61000-6-3:2006 EMC - Commercial level

Specifications are subject to change without prior notice.  All values measured in specific conditions.

Tech Support & Customer Service: 1-800-523-2462

General Tech Questions: [email protected] | Tech Docs: www.BEAsensors.com

©BEA

 | Original Instructions | 

PLEASE KEEP FOR FUR

THER USE - DESIGNED FOR COLOR PRINTING

TECHNICAL SPECIFICATIONS

Содержание LZR-U920

Страница 1: ...75 5847 03 LZR U920_U921 20191125 Page 1 of 4 LZR U920 U921 LASER MEASUREMENT DEVICE WITH BI DIRECTIONAL BUS COMMUNICATION User s Guide EN Visit website for available languages of this document ...

Страница 2: ...and light sources in front of the laser window Avoid the presence of smoke and fog in the detection field Avoid exposure to sudden and extreme temperature changes Keep the sensor permanently powered in environments where the temperature can drop below 35 F Do not use aggressive products to clean the laser windows Avoid direct exposure to high pressure cleaning Clean the laser window with compresse...

Страница 3: ...NG Use the mounting template to position the sensor correctly The gray area indicates the detection range Pass the cable through the cable opening Drill 3 holes as indicated on the mounting template Drill a hole 1 2 inch min for the cable Position the sensor and secure using the provided M5 or Ø UNC N 10 screws Wire accordingly If the heartbeat mode1 via the brown white and brown wire is not used ...

Страница 4: ...isible laser wavelength 635 nm output power 0 95mW CLASS 2 Supply voltage 10 35 V DC sensor side Power consumption 5 W Peak current at power on 1 8 A max 80 ms 35 V Serial communication Type Interface Communication mode Transmission speed Topology Symbol coding File type see Application Note LZR U920 U921 Protocol 76 0019 asynchronous RS 485 half duplex 460800 bit sec max 921600 bit sec point to p...

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