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284
Check first when you have a trouble
5.5.8 Operation mode is not changed properly
5.5.9 Operation panel display is not operating
5.5.10 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.
186
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.
186
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.
186,
195
Check
Points
Possible Cause Countermeasures
Refer
to
page
Main
Circuit
Wiring or installation is improper.
Check for the wiring and the installation.
14Make sure that the connector is fitted securely across
terminal P/+ to P1.
Main
Circuit
Control
Circuit
Power is not input. Input the power. 14
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.)
195
Check
Points
Possible Cause Countermeasures
Refer
to
page
Parameter
Setting
Torque limit function is activated due to a heavy load.
Reduce the load weight.
Set Pr.22 Torque limit level higher according to the load.
(Setting Pr.22 too large may result in frequent
overcurrent trip (E.OC).)
111
Check the capacities of the drive unit and the motor.