Operating Instructions

Warning Codes
Digital Keypad RT-KEYPAD
266 | 443
automatically when receiving the correct communication data value.
Reset condition
Immediately reset
Record
N/A
Cause
Corrective Actions
Incorrect communication command from
upper unit
Check if the communication command is correct.
Malfunction caused by interference
Verify the wiring and grounding of the communication circuit. It is recommended to separate the
communication circuit from the main circuit, or wire in 90 degree for effective anti-interference
performance.
Different communication setting from the
upper unit
Check if the setting for Pr.09-02 is the same as the setting for the upper unit.
Disconnection or bad connection of the
cable
Check the cable and replace it if necessary.
ID No.
Display on LCD Keypad
Warning Name
Description
4
Communication error 4
(CE4)
RS-485 Modbus data is written to read-only address
Action and Reset
Action level
When the data is written to read-only address
Action time
Immediately act
Warning setting parameter
N/A
Reset method
Warning occurs when Pr.09-02=0 and the motor drive keeps running. The drive resets
automatically when receiving the correct written address of communication data.
Reset condition
Immediately reset
Record
N/A
Cause
Corrective Actions
Incorrect communication command from
upper unit
Check if the communication command is correct.
Malfunction caused by interference
Verify the wiring and grounding of the communication circuit. It is recommended to separate the
communication circuit from the main circuit, or wire in 90 degree for effective anti-interference
performance.
Different communication setting from the
upper unit
Check if the setting for Pr.09-02 is the same as the setting for the upper unit.
Disconnection or bad connection of the
cable
Check the cable and replace it if is necessary.