144
Causes and corrective actions
Operation Panel
Indication
TH
FR-PU04
FR-PU07
TH
Name
Electronic thermal relay function prealarm
Description
Appears if the cumulative 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 trip (E.
THM) occurs.
The THP signal can be simultaneously output with the [TH] display. For the terminal used for the THP
signal output, assign the function by setting "8" (positive logic) or "108" (negative logic) in any of
Pr. 190
to Pr. 196 (output terminal function selection)
.
(Refer to chapter 4 of
the instruction manual (applied))
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 57.)
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 57.)
Operation Panel
Indication
MT
FR-PU04
————
FR-PU07
MT
Name
Maintenance signal output
Description
Indicates that the cumulative energization time of the inverter has reached a given time.
When the setting of
Pr. 504 Maintenance timer alarm output set time
is the initial value (
Pr. 504
= "9999"),
this protective function does not function.
Check point
The
Pr. 503 Maintenance timer
setting is larger than the
Pr. 504 Maintenance timer alarm output set time
setting.
(Refer to chapter 4 of
the instruction manual (applied).)
Corrective action
Setting "0" in
Pr. 503 Maintenance timer
erraces the signal.
Operation Panel
Indication
CP
FR-PU04
————
FR-PU07
CP
Name
Parameter copy
Description
Displayed when parameters are copied between the FR-A701 series and FR-A700 series 75K or more.
Check point
Check that parameters are not copied between the FR-A701 series and FR-A700 series 75K or more.
Corrective action
Copy between the same FR-A701 series.
Operation Panel
Indication
SL
FR-PU04
————
FR-PU07
SL
Name
Speed limit indication (output during speed limit)
Description
Output if the speed limit level is exceeded during torque control.
Check point
• Check that the torque command is not larger than required.
• Check that the speed limit level is not low.
Corrective action
• Decrease the torque command.
• Increase the speed limit level.
Содержание FR-A741-11K
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