HOKUYO AUTOMATIC CO.,LTD.
Q If a detection object is not more than white kent paper with 300 by 300mm, does it operate correctly?
A The standard of light amount margin is 1.5 times at 3m with 300 by 300mm white kent paper and so it can't
detect mourning dress or transparent plate etc. with low reflectance. In case of detecting object such as
mirror surface, it can 't detect stably. Moreover, in the case of a detection objects thinner than a width of
300mm, PBS can't detect if detection distance is 3m or more because PBS's beam which becomes fan-shape
with equal angle is stepped. However, in case of within 3m, thinner detection object can be detect.(100mm
or more at 1m)
Q What is detecting precision?
A It is +/- 10cm at within 1m and is +/- 0.1 time against setting value at 1m or more.
Q Is it possible to set 1m or more for width direction?
A When area is set for width direction, it is set within 1.5m and check actual area.
Q When installing PBS, how far can it cover except for light-projection/reception part?
A If it installs so that it may stick out 50mm or more, there is no problem. Consider installing status, referring
scanning angle and the following beam diameters. Since the beam spreads proportionally such as 20mm in
diameter for min., 50mm in diameter at 1m and 80mm in diameter at 2m and so install it not to interrupt such
area.
Q Is it possible to use under water splashing?
A Even if any drop of water attached, it can use after wiping but we can't guarantee to use at the places under
any drop of water.
Q When PBS suddenly receives a strong vibration during operating, how does it operate?
A It will not affect if it is within 70Hz is less than and double amplitude of 1.5mm (X, Y and Z directions).
When motor is getting unstable by over-rated vibration for the above value, detection output is
forcibly
getting
detection state once but if vibration time isn't beyond 1sec., return automatically within 1sec.(When motor is
during unstable, power lamp flickers with 0.1sec interval.)
During self recovery, for motor rotation to return to the normal state the excitation current will increase for 10
seconds. If "synchronization loss" occurs 4 times (5 times including initial trial) during the recovery process,
it is judged that the sensor is abnormal.
Moreover, if "loss of synchronization" occurs 10 times within 1200 scans (120 seconds), it is judged that the
sensor is abnormal.
However, if such trouble(unstable motor) is temporary and there is no damage on motor,
trouble output returns after putting power source in again.
11. Trouble
When you felt irregular operation to this device, make sure to stop to use and inspect it. If you couldn't find out
any reason, contact our offices. Trouble-shooting is as per following table:-
Trouble
Countermeasure
Power lamp doesn't light up
* Check wiring is correct or not.
* Check power source voltage.
Detection output doesn't change
* Check input/output wiring is correct or not.
* Check installation is correct or not.
* Check setting are is correct or not.
* Check area setting that is considered about sensor hysteresis or not.
* Check scanning view is within 180 degrees or not on area setting.
Power lamp keeps on flickering
* Device is out of order. Replace it by new one.
Title
Measuring Distance Type Obstacle Detection
Sensor PBS-03JT-V01 Instruction Manual
Drawing
No.
C-41-2430
18/19
