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Check first when you have a trouble
5.5.8
Operation mode is not changed properly
Check
Points
Input
Start signal (STF or STR) is ON.
Signal
Pr.79 setting is improper.
Parameter
Setting
Operation mode and a writing device do not
correspond.
5.5.9
Operation panel display is not operating
Check
Points
Main
Wiring or installation is improper.
Circuit
Main
Circuit
Power is not input.
Control
Circuit
Command sources at the PU operation mode is not at
the operation panel.
Parameter
Setting
(None of the operation mode displays (
is lit.)
5.5.10 Motor current is too large
Check
Points
Parameter
Torque limit function is activated due to a heavy load.
Setting
284
Possible Cause
Possible Cause
Possible Cause
Countermeasures
Check that the STF and STR signals are OFF.
When either is ON, the operation mode cannot be
changed.
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.
Check Pr.79, Pr.338, Pr.339, Pr.551, and select an
operation mode suitable for the purpose.
Countermeasures
Check for the wiring and the installation.
Make sure that the connector is fitted securely across
terminal P/+ to P1.
Input the power.
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.)
Countermeasures
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).)
Check the capacities of the drive unit and the motor.
Refer
to
page
186
186
186,
195
Refer
to
page
14
14
195
Refer
to
page
111
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