Maxi MWHE20, Инструкция по эксплуатации, Страница: 46 / 82

TROUBLE SHOOTING
7-4
Possible Causes What to Check and Suggested Measures
7. A frequency command
with higher priority
than the one attempted
was active.
Check the higher priority run command with Menu#2 “Data
checking” and Menu#4 “I/O checking” using the keypad, referring to
the block diagram of the drive command generator.
Refer the FRENIC-Mini User’s Manual (MEH446),
→
Correct any incorrect function code data settings (e.g. cancel the
higher priority run command).
8. The peak and bottom
frequencies for the
frequency limiters
were set incorrectly.
Check the data of function codes F15 and F16.
→
Change the peak and bottom frequencies (F15 and F16) the
correct ones.
9. The coast-to-stop
command was
effective.
Check the data of function codes E01, E02, E03, E98 and E99 with
Menu#2 “Data Checking” and the input signal status with Menu#4
“I/O checking” using the keypad.
→
Release the coast-to-stop command setting.
10. Broken wire, incorrect
connection or poor
contact with the
motor.
Check if the output current and connection are correct.
→
Repair the wires to the motor, or replace them.
11. Overload
Check that the output current is not too large.
→
Lighten the load (e.g. operate the mechanical brake correctly).
12. Torque generated by
the motor was
insufficient.
Check that the motor starts running if the value of torque boost (F09)
is increased.
→
Increase the value of torque boost (F09) and try to run the motor
Check the data of function codes F04, F05, H50, and H51.
→
Change the V/f pattern to match the motor’s characteristics.