Operating Instructions

Fault Codes
Digital Keypad
331 | 443
Fault treatment parameter
N/A
Reset method
Manual reset
Reset condition
Immediately reset
Record
No
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.09-02 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*
Display on LCD Keypad
Fault Name
Fault Descriptions
57
Data is written to read-only
address (CE4)
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
Fault treatment parameter
N/A
Reset method
Manual reset
Reset condition
Immediately reset
Record
No
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. 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*
Display on LCD Keypad
Fault Name
Fault Descriptions
58
Modbus transmission time-
out (CE10)
Modbus transmission time-out occurs
Action and Reset
Action level
When the communication time exceeds the detection time for Pr.09-03 communication time-out.
Action time
Pr.09-03