LCD Digital Operator
LCD Digital Operator User's Manual v0_90 110218.doc
26
Issue 0.90 Draft
7. Trouble shooting
For inverter trouble shooting, refer to the inverter instruction manual. In this section, the trouble
shooting of the LCD digital operator will be described.
(1) No data appears on the screen
(2) Key operations are ignored
(3) If the operator screen becomes dark or characters cannot be identified, inductive noise may be
entered from the cable. Separate LCD digital Operator cable more than 15cm from other cables. To
reset the disturbed screen, turn ON any keys of LCD digital operator. If the same symptom appears
again, turn OFF the inverter power supply or reset the terminal reset signal.
YES
YES
YES
YES
NO
NO
NO
NO
NO
The inverter power supply is ON
The cable is connected properly to
both sides (inverter and LCD
digital operator)
The cable is not broken
The setting data is correct to the
inverter
The operator is defective
Turn ON the inverter power supply
Connect the cable properly and
turn ON the Inverter power supply
Replace the cable
Set the operating mode
Please contact your Omron
representative
NO
NO
NO
YES
YES
YES
NO
The inverter operation is normal
Reset the inverter
The cable is connected properly to
the connector
Connect the cable properly, then
turn ON the inverter power supply
The cable is not broken
Replace the cable
Operator is not in Read, Write or
Option Mode, also has no error
message on screen
Move to normal display mode and
press the key indicated on screen
