Fastus D4RF Series, User Manual

Page: 118 / 138

5-4
Errors and Countermeasures
5-2 Errors and Countermeasures
This section provides countermeasures for errors that occur during product use.
Error Cause Countermeasure
LED
indicator
Power indicator (green) does not
illuminate.
The supply voltage is insufficient
or unstable.
Check whether the provided
supply voltage is stable.
Power indicator blinks in green. IO-Link communication is in
progress.
This is not an error.
OLED
display
Nothing appears on the OLED
display.
All information that appears on
the OLED display disappears.
Power is not being supplied
correctly.
Correctly apply the supply voltage
to the product.
Brown wire: 12 to 24 VDC (12 to
30 VDC depending
on the model), 18 to
30 VDC in IO-Link
mode
Blue wire: 0 V
“Eco mode” is set to “On”. (When
the power indicator illuminates in
green while the OLED display
turns off)
Set “Eco mode” to “Off”. (page
4-13)
Operation “Key Locked” appears on the
OLED display and operation via
keys and external input is not
possible.
Key operations are locked by the
“Lock” function, preventing the
product from accepting
operations.
Hold down both the [+] and [−]
keys for 1 second or longer.
When the “Lock” function is
released, “Unlock” is displayed.
(page 3-31)
The output indicator blinks in
orange, and key operation is not
possible.
Execution of the teach function
via external teach input is in
progress, preventing the product
from accepting operations.
Check for short-circuits or causes
of short-circuits on the white wire.
When an attempt was made to
change the threshold with the [+]
and [−] keys, “ASC on” was
displayed, and the threshold
could not be changed.
“ASC” is enabled. Set “ASC” (page 4-17) to “Off”.
Detection Detection is made (the output
indicator illuminates in orange)
even though no object is present.
• The threshold setting is too low
or the sensing distance is too
far. (When using a diffuse
reflective fiber unit.)
• The threshold setting is too high
or the sensing distance is too
near. (When using a through-
beam fiber unit.)
• Increase the threshold. (When
using a diffuse reflective fiber
unit.)
• Decrease the threshold. (With a
through-beam fiber unit.)
The background reflects a large
amount of light. (With a diffuse
reflective fiber unit.)
Prevent excessive light reflected
from the background. (For
example, change the installation
positions, or paint the background
black.)
The manual adjustment of
threshold with the [+] and [−] keys
is not correct.
Readjust the threshold with the
[+] and [−] keys or execute the
teach function again to set the
threshold to the correct value.