Mitsubishi Electric FR-A700 Instruction Manual page 139

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
(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 section 4
of Instruction Manual (applied).))
Operation Panel
Indication
Name
Description
Check point
Corrective action
134
RB
Regenerative brake prealarm
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.
The RBP signal can be simultaneously output with the [RB] display. For the terminal used for the RBP
signal output, assign the function by setting "7" (positive logic) or "107" (negative logic) in any of Pr. 190
to Pr. 196 (output terminal function selection). (Refer to section 4 of
• 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.
• Increase the deceleration time.
• Check the Pr. 30 Regenerative function selection and Pr. 70 Special regenerative brake duty values.
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 shut-off
(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 section 4 of
1. Check for large load or sudden acceleration.
2. Is the Pr. 9 Electronic thermal O/L relay setting is appropriate? (Refer to page 48.)
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 48.)
MT
Maintenance signal output
Indicates that the cumulative energization time of the inverter has reached a given time.
The Pr. 503 Maintenance timer setting is larger than the Pr. 504 Maintenance timer alarm output set time
setting. (Refer to section 4 of
Setting "0" in Pr. 503 Maintenance timer erraces the signal.
CP
Parameter copy
Appears when parameters are copied between models with capacities of 55K or less and 75K or more.
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. 82, Pr. 90 to Pr.
94, Pr. 158, Pr. 455, Pr. 458 to Pr. 462, Pr. 557, Pr. 859, Pr. 860 and Pr. 893 is necessary.
Set the initial value in Pr. 989 Parameter copy alarm release.
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.
FN
Fan fault
For the inverter that contains a cooling fan,
stops due to a fault or different operation from the setting of Pr. 244 Cooling fan operation selection.
Check the cooling fan for a fault.
Check for fan fault. Please contact your sales representative.
FR-PU04
RB
FR-PU07
FR-PU04
TH
FR-PU07
FR-PU04 ————
FR-PU07 MT
Instruction Manual (applied).)
FR-PU04 ————
FR-PU07 CP
FR-PU04 ————
FR-PU07 SL
FR-PU04
FN
FR-PU07
appears on the operation panel when the cooling fan
Instruction Manual (applied))
Instruction Manual (applied))