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Possible Causes
(7) A frequency command
with higher priority than
the one attempted was
active.
(8) The peak and bottom
frequencies for the
frequency limiters were
set incorrectly.
(9) The coast-to-stop
command was effective.
(10) Broken wire, incorrect
connection or poor
contact with the motor.
(11) Overload
(12) Torque generated by the
motor was insufficient.
[ 2 ]
The motor rotates, but the speed does not increase.
Possible Causes
(1) The maximum frequency
was set to too low a
value.
(2) The peak frequency of the
frequency limiter was set
to too low a value.
(3) The set frequency was
set to too low a value.
What to Check and Suggested Measures
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), Chapter 4.
Correct any incorrect function code data settings (e.g.
cancel the higher priority run command).
Check the data of function codes F15 and F16.
Change the peak and bottom frequencies (F15 and F16) to
the correct ones.
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.
Check if the output current and connection are correct.
Repair the wires to the motor, or replace them.
Check that the output current is not too large.
Lighten the load (e.g., operate the mechanical brake
correctly).
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
characteristics.
What to Check and Suggested Measures
Check the data of function code F03.
Correct the data of the maximum frequency (F03).
Check the data of function code F15.
Correct the data of the peak frequency of the frequency
limiter (F15).
Check the signals for the set frequency from the control circuit
terminals with Menu #4 "I/O checking" using the keypad.
Increase the set frequency.
If an external potentiometer for frequency command, signal
converter, switches, or relay contacts are malfunctioning,
replace them.
Connect the external circuit wires to terminals [13], [12],
[11], and [C1] correctly.
6-4
pattern
to
match
the
motor's
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