66
Causes and corrective actions
(3) Minor fault
When the protective function is activated, the output is not shut off. You can also output a minor fault signal by
making parameter setting. (Set "98" in any of
Pr. 190 to Pr. 196 (output terminal function selection)
.
(Refer to the
Instruction Manual (applied).)
)
Operation Panel
Indication
RB
FR-PU04
RB
Name
Regenerative brake prealarm
Description
Appears if the regenerative brake duty reaches or exceeds 85% of the
Pr. 70 Special regenerative
brake duty
value. If the regenerative brake duty reaches 100%, a regenerative overvoltage
(E. OV_) occurs.
Appears only for the FR-F740-01800 or more.
Check point
• Check that the brake resistor duty is not high.
• Check that the
Pr. 30 Regenerative function selection
and
Pr. 70 Special regenerative brake duty
values
are correct.
Corrective action
• Increase the deceleration time.
• Check the
Pr. 30 Regenerative function selection
and
Pr. 70 Special regenerative brake duty
values.
Operation Panel
Indication
TH
FR-PU04
TH
Name
Electronic thermal relay function prealarm
Description
Appears if the integrating value of the
Pr. 9 Electronic thermal O/L relay
reaches or exceeds 85% of
the preset level. If it reaches 100% of the
Pr. 9 Electronic thermal O/L relay
setting, a motor overload
shut-off (E. THM) occurs.
Check point
1. Check for large load or sudden acceleration.
2. Is the
Pr. 9 Electronic thermal O/L relay
setting is appropriate?
(Refer to page 32.)
Corrective action
1. Reduce the load weight or the number of operation times.
2. Set an appropriate value in
Pr. 9 Electronic thermal O/L relay
.
(Refer to page 32.)
Operation Panel
Indication
MT
FR-PU04
————
Name
Maintenance signal output
Description
Indicates that the cumulative energization time of the inverter has reached a given time.
Check point
The
Pr. 503 Maintenance timer
setting is larger than the
Pr. 504 Maintenance timer alarm output set time
setting.
(Refer to the Instruction Manual (applied).)
Corrective action
Setting "0" in
Pr. 503 Maintenance timer
erraces the signal.
Operation Panel
Indication
CP
FR-PU04
————
Name
Parameter copy
Description
Appears when parameters are copied between models with capacities of FR-F720-02330 (FR-
F740-01160) or less and FR-F740-01800 or more.
Check point
Resetting of
Pr.9, Pr.30, Pr.51, Pr.52, Pr.54, Pr.56, Pr.57, Pr.61, Pr.70, Pr.72, Pr.80, Pr.90, Pr.158, Pr.190 to
Pr.196,
and
Pr.893
is necessary.
Corrective action
Set the initial value in
Pr. 989 Parameter copy alarm release
.
Operation Panel
Indication
FN
FR-PU04
FN
Name
Fan fault
Description
For the inverter that contains a cooling fan,
appears on the operation panel when the cooling
fan stops due to a fault or different operation from the setting of
Pr. 244 Cooling fan operation
selection
.
Check point
Check the cooling fan for a fault.
Corrective action
Check for fan fault. Please contact your sales representative.
Содержание FR-F700 Series
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