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[ 4 ] If the speed variation and current vibration (such as hunting) occur at the constant
speed
Possible Causes
What to Check and Suggested Measures
(1) The frequency command
fluctuated.
Check the signals for the frequency command with Menu #4
"I/O checking" using the keypad.
Î
Increase the filter constants (C33 and C38) for the
frequency command.
(2) The
external
frequency
command device was
used.
Check that there is no noise in the control signal wires from
external sources.
Î
Isolate the control signal wires from the main circuit wires as
far as possible.
Î
Use shielded or twisted wires for the control signal.
(3) The
slip
compensation
gain was too large.
Check that the motor vibration is absorbed if the slip
compensation (P09) is cancelled.
Î
Readjust the slip compensation value (P09) or deactivate
slip compensation altogether.
Cancel the automatic control system (automatic torque boost,
slip compensation, energy saving operation, overload
prevention control, current limiting) and check that the motor
vibration is suppressed (F37, P09, H70, and F43).
Î
Cancel the functions causing the vibration.
Î
Readjust the data of the oscillation suppression gain (H80)
currently set to appropriate values.
(4) The
vibration
system
having low stiffness in a
load caused hunting or the
current is irregular due to
special motor constants.
Check that the motor vibration is suppressed if you decrease
the level of the motor sound (carrier frequency) (F26) or set the
motor sound (tone) to "0" (F27 = 0).
Î
Decrease the carrier frequency (F26) or set the sound tone
to "0" (F27 = 0).
[ 5 ] If grating sound can be heard from motor
Possible Causes
What to Check and Suggested Measures
(1) The carrier frequency was
set too low.
Check the data of function codes F26 (Motor sound (carrier
frequency)) and F27 (Motor sound (tone)).
Î
Increase the carrier frequency (F26).
Î
Readjust the setting of F27 to appropriate value.
[ 6 ] The motor does not accelerate and decelerate at the set time.
Possible Causes
What to Check and Suggested Measures
(1) The inverter ran the motor
by S-curve or curvilinear
pattern.
Check the data of function code H07 (Acceleration/
deceleration pattern).
Î
Select the linear pattern (H07 = 0).
(2) The current limiting
prevented the output
frequency from
increasing.
Make sure that F43 (Current limiter (mode selection)) is set to
"2", and check that the setting of F44 (Current limiter (level)) is
reasonable.
Î
Readjust the setting of F44 to appropriate value, or disable
the function of current limiting in F43.
Î
Increase the acceleration/deceleration time (F07, F08, E10,
and E11).
Summary of Contents for Frenic Mini FRN001C1E-2U
Page 85: ...5 4 ...
Page 88: ...5 7 ...
Page 89: ...5 8 C codes Control Functions of Frequency ...
Page 92: ...5 11 J codes Application Functions y codes Link Functions ...
Page 167: ...8 6 8 3 Common Specifications ...
Page 168: ...8 7 ...
Page 171: ...8 10 8 5 External Dimensions 8 5 1 Standard models ...
Page 172: ...8 11 ...
Page 173: ...8 12 8 5 2 Models available on order EMC filter built in type ...
Page 174: ...8 13 ...
Page 192: ...MEMO ...
Page 193: ...MEMO ...
Page 194: ...MEMO ...
Page 196: ...Fuji Electric FA Components Systems Co Ltd Fuji Electric Corp of America 2007 06 F07 F07 00CM ...