Mitsubishi Electric FR-E710W-0.1K, Instruction Manual

Page: 308 / 349

308
Check first when you have a trouble
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
Main
Circuit
Wiring or installation is improper.
Check for the wiring and the installation.
14 Make sure that the connector is fitted securely across
terminal P/+ and 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-PU04/FR-PU07) is connected
while
Pr. 551 = "9999" (initial setting), all the operation
mode displays ( ) turn OFF.)
205
Check
points
Possible Cause Countermeasures
Refer
to
page
Parameter
Setting
Torque boost (
Pr. 0, Pr. 46
) setting is improper under V/F
control, so the stall prevention function is activated.
Increase/decrease
Pr. 0 Torque boost
setting value by
0.5% increments to the setting.
85
V/F pattern is improper when V/F control is performed.
(
Pr. 3, Pr. 14, Pr. 19
)
Set rated frequency of the motor to
Pr. 3 Base frequency
.
Use
Pr. 19 Base frequency voltage
to set the base voltage
(e.g. rated motor voltage).
98
Change
Pr. 14 Load pattern selection
according to the load
characteristic.
100
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 ).)
92
Check the capacities of the inverter and the motor. —
Auto tuning is not performed under Advanced magnetic
flux vector control or General-purpose magnetic flux
vector control.
Perform offline auto tuning.
120