Nidec DUB Series - Troubleshooting; About Controller; Error Message

22
Operating procedure Display panel
(1) Make sure if the display panel shows
the furnace temperature and the
maximum setting temperature.
*This shows time (minutes) to start 󳞛ring in the event
that you set timers.
Display Name of errors Reason
Countermeasure
Inability to raise the temperature
・ Thermocouples are forgotten to be set in kilns. ・ Install the thermocouples into the kiln.
・ The temperature setting is beyond the
heating ability of the kiln.
・ Set the suitable temperature.
・ The hot wire of the kiln is disconnected.
・ Stop 󳞛ring, and change the hot wires after
cooling the inside of the kiln suf󳞛ciently.
・ Door is opening during 󳞛ring
・ Close the door paying close attention to the
heat of the kiln.
Disconnection of thermocouples
and electrical conductors
or
Detection of abnormal high
temperatures
・ Disconnection of the thermocouples or
electrical conductors
Loosening of connection
・ Abnormal high temperature inside the kiln
・ Repair and change the thermocouples or
electrical conductors by the condition of
heat insulation. Tighten the connection if
it is loose.
・ Please consult Nidec DriveTechnology
ceramics department
in the event that the display still shows F3
even if you try the above countermeasures
Reverse connection of
thermocouples
・ Polarity is reversely connected in connection
of thermocouples.
・ Shift the polarity of wire connection.
Abnormal temperature of
microcomputers
or
breakdown of temperature
censors
・ High abnormal temperature inside the
microcomputer
・ Breakdown of the temperature censor
・ Please consult Nidec DriveTechnology
ceramics department when it occurs.
7
Troubleshooting
1 About controller
When you want to make sure the content of the program you set
When you want to make sure if the 󳞛ring mode is on or off
*The maximum setting temperature It
flashes on and off for 3 seconds every
20 seconds.
The kiln temperature
The maximum setting
temperature
Shows alternately
1 About controller
Error message : The error shows the problems of the kiln during 󳞛ring.
Please correspond to the error message, push and cancel the error.
Error message
Con󳞛rmation if the microcomputer is in 󳞛ring mode or not after starting 󳞛ring
For example
shows 󳞜ashing.
shows 󳞜ashing.
Operating procedure Display panel
(1)
Push the key of the process you want
to con󳞛rm.
(2) The display automatically turns back to show “In operation” in about 5 minutes.