Mitsubishi FR-A721-11K Instruction Manual page 153

Causes and corrective actions
Operation Panel
Indication
Name
Description
Check point
Corrective action
Operation Panel
Indication
Name
Description
Check point
Corrective action
Operation Panel
Indication
Name
Description
Check point
Corrective action
Operation Panel
Indication
Name
Description
Check point
Corrective action
Operation Panel
Indication
Name
Description
Check point
Corrective action
146
PS
PU stop
Stop with of the PU is set in Pr. 75 Reset selection/disconnected PU detection/PU stop selection. (For Pr.
75, refer to Chapter 4 of
Check for a stop made by pressing
Turn the start signal off and release with
TH
Electronic thermal relay function prealarm
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
Check for large load or sudden acceleration.
Is the Pr. 9 Electronic thermal O/L relay setting is appropriate? (Refer to page 57.)
Reduce the load weight or the number of operation times.
Set an appropriate value in Pr. 9 Electronic thermal O/L relay. (Refer to page 57.)
MT
Maintenance signal output
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.
The Pr. 503 Maintenance timer setting is larger than the Pr. 504 Maintenance timer alarm output set time
setting. (Refer to Chapter 4 of
Setting "0" in Pr. 503 Maintenance timer erases the signal.
CP
Parameter copy
Displayed when parameters are copied between the FR-A701 series and FR-A700 series 75K or
higher.
Check that parameters are not copied between the FR-A701 series and FR-A700 series 75K or higher.
Copy between the same FR-A701 series.
SL
Speed limit indication (output during speed limit)
Output if the speed limit level is exceeded during torque control.
Check that the torque command is not larger than required.
Check that the speed limit level is not low.
Decrease the torque command.
Increase the speed limit level.
FR-PU04
PS
FR-PU07
the Instruction Manual (Applied).)
of the operation panel.
.
FR-PU04
TH
FR-PU07
FR-PU04 ————
FR-PU07 MT
the Instruction Manual (Applied).)
FR-PU04 ————
FR-PU07 CP
FR-PU04 ————
FR-PU07 SL
the Instruction Manual (Applied))