Delta VFD040C43A-21 User Manual

Chapter 13 Warning CodesC2000 Plus
13-6
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 condition
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.09-04 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.
Display on LCD Keypad
Warning Name
Description
Communication slave
error (CK4)
Keypad communication data is written to read-only
address. (Keypad auto-detect this error and display it.)
Action and Reset
Action condition
When the data is written to read-only address
Action time
Immediately act
Warning setting parameter
N/A
Reset method
Remove the keypad and then reconnect it to the motor drive.
Reset condition
Immediately reset
Record
N/A
Cause
Corrective Actions
Incorrect communication
command from keypad
Keypad and the motor drive don’t communicate properly. It is recommended to
remove the keypad and then reconnect it to the motor drive. If the problem
persists after reconnecting the keypad, pay attention to the motor drive status.
For example: Motor drive might reset to default settin
g during operation or while
enabling PLC function.
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 keypad
Check if the Baud rate = 19200 bps. Format = RTU8, N, 2.
Disconnection or bad connection
of the cable
Check the cable and replace it if is necessary.

Delta VFD040C43A-21 Specifications

General

Brand	Delta
Model	VFD040C43A-21
Category	DC Drives
Language	English