HOKUYO AUTOMATIC UST-05LN - Troubleshooting; Troubleshooting Guide

Document No: C-41-02490-9
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9. Troubleshooting
Table 9-1 Troubleshooting list
Situation
Possible reason
Solution suggestion
UST is not operating
Power supply is
OFF /Over voltage/
Under voltage
Make sure power supply is ON
Voltage is within the specification
Cable is damaged
Power supply cable is in good condition
Replace with a new cable
UST does not
connect with
Area Designer
Configuration
is incomplete
Reconfigure UST
PC trouble
Check the PC’s specification. Make sure the specification is
compatible.
Close other unrelated applications and reconnect
Power supply is OFF
Make sure the power supply is ON
Voltage is within the specification
Power supply cable is in good condition
USB cable is not
connected to USB port
Make sure the USB is connected to both PC and UST
Driver is not installed
Install the driver
Obstacles are not
detected inside the
selected detection
area
Power supply is OFF
Voltage is within the specification
UST is in malfunction
state
Make sure that power supply LED is in normal state
Restart UST if it is blinking.
Minimum detectable
size configuration
Make sure that object width in detection area is more than
minimum detectable size configuration (Refer to section 3.9)
Output remains
OFF even if no
object in the
detection area
Light interference
Mount UST at a location free from light interference
Refer to chapter 5 light interference for counter measures
Mutual interference
Refer to chapter 5 Mutual interference and synchronous
operation for counter measures
Contaminated optical
window
Check for any contamination or damage on the optical
window
Floor is detected
Make sure floor is not detected.
Reconfigure the detection area.
Background is detected
Make sure that the background is not within the detection
area. Reconfigure the detection area.
Malfunction state due to
self-diagnostic function
Make sure power supply LED is not blinking (normal state).
Hysteresis setting
Reconfirm the hysteresis setting.(Refer to section 3.8)