269
Check first when you have a trouble
5.5.9
Operation mode is not changed properly
5.5.10 Operation panel display is not operating
5.5.11 Motor current is too large
Check
Points
Possible Cause
Countermeasures
Refer
to
Page
Input
Signal
Start signal (STF or STR) is ON.
Check that the STF and STR signals are OFF.
When either is ON, the operation mode cannot be
changed.
Parameter
Setting
Pr. 79
setting is improper.
When
Pr. 79 Operation mode selection
setting is "0" (initial
value), the drive unit is placed in the External operation
mode at input power ON. To switch to the PU operation
mode, press
on the operation panel (press
when the parameter unit (FR-PU07) is used). At other
settings (1 to 4, 6, 7), the operation mode is limited
accordingly.
Operation mode and a writing device do not
correspond.
Check
Pr. 79, Pr. 338, Pr. 339, Pr. 551,
and select an
operation mode suitable for the purpose.
Check
Points
Possible Cause
Countermeasures
Refer
to
Page
Main
Circuit
Wiring or installation is improper.
Check for the wiring and the installation.
Make sure that the connector is fitted securely across
terminal P/+ to P1.
Main
Circuit
Control
Circuit
Power is not input.
Input the power.
Parameter
Setting
Command sources at the PU operation mode is not at
the operation panel.
(None of the operation mode displays (
)
is lit.)
Check the setting of
Pr. 551 PU mode operation command
source selection.
(If parameter unit (FR-PU07) is connected while
Pr. 551
= "9999" (initial setting), all the operation mode displays
(
) turn OFF.)
Check
Points
Possible Cause
Countermeasures
Refer
to
Page
Parameter
Setting
PM control torque boost setting is improper.
Lower the
Pr. 785 PM control torque boost
setting.
(Lowering it too much may cause torque shortage.)
Stall prevention function is activated due to a heavy
load.
Reduce the load weight.
—
Set
Pr. 22 Stall prevention operation level
higher according
to the load. (Setting
Pr. 22
too large may result in
frequent overcurrent trip (E.OC
).)
Check the capacities of the drive unit and the motor.
—
Offline auto tuning is not performed when driving a
motor other than S-PM geared motor.
Perform offline auto tuning.
Summary of Contents for FR-D720-0.2K-G
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