Embraco Fullmotion CF10C Product Manual page 42

CHAPTER 4. OPERATION
stopped.
Note 5 : When one or more errors occur, the corresponding bits "H" are set to 1.
Example: Overload and Under speed: 0xFF06
Note 6 : The over temperature failure refers to when the inverter turns off due to
the temperature overcoming 105°C, not to the temperature protection actuating.
If compressor is stopped due to a failure (see Data Status table), it is possible to
reset that failure sending a speed command to turn inverter off (0 rpm set speed).
However, if nothing is done, the failure reset will occur aſter 8 minutes and then the
compressor will try to restart. The following example shows a situation where the
compressor speed is set at 2000 RPM.
Step 1: select proper command
Step 2: transform speed from decimal into hexadecimal base
Step 3: split lower and higher Bytes
Step 4: calculate sum of first 4 Bytes
Step 5: boolean logic to maintain sum as 8-bit
Step 6: calculate checksum
Error Code
Code
F0h Error in 4th Byte
F2h Checksum error
F4h Command error
F8h Error in the 3rd Byte
Example: Set compressor at 2000 RPM
Command for selecting a speed is Set speed
ID A5h
CMD C3h
2000d 07D0h
LSB D0h
MSB 07h
S14h=A5h+C3h+D0h+07h
S14h 23Fh
L14h=0FFh AND S14h
L14h 3Fh
CK=100h-(0FFh AND S14h)=100h-3Fh
CK= C1h
Command: A5h C3h D0h 07h C1h
Error
37