Delta VFD2A8MS21ANSAA

Chapter 13 Warning CodesMS300
514
ID No.
Display on LCD Keypad
Warning Name
Description
56
Checksum error
(PLSn)
PLC checksum error
Action and Reset
Action Condition
PLC checksum error is detected after the drive is powered on, then PLSn
warning occurs.
Action Time
Immediately act when the fault is detected
Warning Setting Parameter
NA
Reset Method
Check if the program is correct and download the program again. If the fault
does not exist, the warning automatically clears.
Reset Condition
N/A
Record
N/A
Cause
Corrective Actions
The program detects checksum
error during PLC operation
1. Disable PLC
2. Reset the PLC program (Pr.00-02 = 6)
3. Enable PLC
4. Re-download the PLC program