Troubleshooting - Panasonic UJ30 Series User Manual

Symptoms
LED does not irradiate.
When a warning message is displayed:
Temperature warning
Time warning
When an error occurs:
Interlock emergency stop
" The interlock contact was opened
during irradiation."
Connection error
"The LED was disconnected during
irradiation."
LED wire broken
"LED circuit opening was detected
during irradiation."
LED short-circuited
" LED short-circuiting was detected
during irradiation."
LED temperature error
" The LED temperature reached an
abnormal temperature."
LED time error
"The total irradiation time reached the
replacement point."
LED calibration error
"Calibration uncompleted"
Did you select the target channel for the product type? (When selected, the channel
switch is lit or flashing.)
→Select the target channel when setting the product type.
If the target channel is selected but does not irradiate, check if the irradiation time
is set to 0.0sec for the channel program for the target product type.
→If so, set the irradiation time to 0.0sec or longer.
The channel connection indicator changes to orange (mixture of green and red)
when the LED head temperature has reached the warning level. If you continue the
operation in this condition, the product life will be significantly shortened, and the
temperature may exceed the upper limit, causing an emergency stop.
→Set the UV intensity level (%) lower or improve the heat radiation performance
of the LED head to keep the temperature lower than the warning level.
When the total irradiation time of the LED reaches the point 30 hours before the
preset LED replacement point, the time warning is issued and "x100hrs" will be
lit. When the time reaches the LED replacement point, the irradiation process will
make an emergency stop.
→Prepare a new LED head. After replacement, clear the total irradiation time.
The emergency stop contact was opened during irradiation.
→Check the emergency stop contact or the external input terminal block.
Close the contact and then restart irradiation.
* If the emergency stop contact is open, normal resetting is not available.
Hold down SET to forcibly reset the interlock.
It is possible that the connection cable or LED head was broken.
→Reset the error status, check the connection of the cable and LED head with the
channel in question, and replace them if necessary.
The current detection was stopped during irradiation. It is possible that the
connection cable or LED head was broken.
→Reset the error status, check the connection of the connection cable and LED
head with the channel in question, and replace them if necessary.
An overcurrent was detected during irradiation. It is possible that the connection
cable or LED head was short-circuited.
→Reset the error status, check the connection of the cable and LED head with the
channel in question, and replace them if necessary.
The LED temperature exceeded the upper limit.
→Set the UV intensity level (%) lower or improve the heat radiation performance
of the LED head to keep the temperature lower than the warning level.
The total irradiation time of the LED reached the preset LED replacement point.
(Or, it is possible that the LED replacement point was set ahead the total irradiation
time.)
→Reset the error status, replace the LED head, and then clear the total irradiation
time. (Or, go to the mode setting screen and correctly set the LED replacement
point.)
Calibration was stopped before completion. Or, the calibration was not successful.
It is possible that the setting is too high, or there is a problem in the dedicated UV
sensor (option).
→Reset the error status, check the connection of the UV sensor, review the setting,
and then retry calibration.

13 Troubleshooting

Checks/Remedies
57