Delta ME300 Series - Page 380

Chapter 13 Warning Codes
ME300
13-3
No. Display on LED Keypad Warning Name Description
4
Communication error 4
(CE4)
RS-485 Modbus data is written to read-only address.
Action and Reset
Action condition When the data is written to read-only address.
Action time Immediately
Warning treatment 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 the 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.09-01 and Pr.09-04 are the same as the setting for
the
upper unit.
Disconnection or bad connection
of the cable
Check the cable and replace it if necessary.