Chapter 5 Troubleshooting
5-3
5
Type
Problem
Cause
Corrective action
Ref.
page
The measurement object is
fluctuating or vibrating.
Stop the fluctuation or vibration of
the measurement object.
1-8
The measurement object is
tilted.
Place the measurement object as
perpendicularly as possible.
1-8
MEAS
There is a difference
between the actual
distance to the
measurement object
and measurement
value.
The received light waveform
is saturated or insufficient.
Adjust the received light intensity
using the
shutter time.
3-14
The measurement object is
out of the measurement
range.
Check the
measurement range
of the sensor head used.
6-9
The scaling is not set
correctly.
Set the correct scaling.
3-29
MEAS
The correct
measurement
value is not
displayed.
The light
emitter/receiver is dirty.
Remove the dirt on the
light
emitter/receiver
.
6
1-6
The moving average is
small.
Increase the number of
moving
average
.
3-16
The light
emitter/receiver is dirty.
Remove the dirt on the
light
emitter/receiver
.
6
1-6
The mounting direction
of the sensor head is
wrong.
Check the
mounting direction
of sensor head.
1-7
MEAS
Measurement
values vary.
The sensor head or
measurement object is
tilted.
Check the mounting of the sensor
head and the setting position of the
measurement object.
1-7
The wiring is incorrect.
RS-422 and RS-485 are different in
wiring. Connect the wires correctly.
Use a twisted-pair cable to ensure
stable communication.
4-2
4-3
4-4
The RS-422/485 connecting
cable is disconnected.
Check the
connection
between
RS-422/485 cable and connector.
4-2
The wrong connection mode
and baud rate are selected.
Connect the connection mode
and baud rate correctly.
3-36
The communications
settings for the external
equipment are wrong.
Check the settings for the external
equipment (e.g., the
communications board) and be
sure to set the correct
RS-422/485
communications specifications
.
4-2
The sensor number
settings are wrong.
If a number of sensors are connected
over RS-485, be sure to set a unique
sensor number for each sensor.
3-35
4-4
COM
RS-485
communication
control cannot be
done.
Normal
communication
over RS-422/485
is impossible.
The selection of the
terminating sensor is
wrong.
Select the terminating resistor
(R3) only for the terminating
sensor head only. Be sure to turn
OFF the terminating resistor of
the rest of the sensor heads.
3-34
Содержание HL-G1 A-C5 Series
Страница 18: ...Introduction 16 ...
Страница 147: ...Chapter 6 Specifications 6 17 6 250 mm Type HL G125 A C5 HL G125 S J Unit mm 37 1 12 5 118 3 400 100 35 39 5 5 ...
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