Mitsubishi Electric FR-E700EX Instruction Manual page 272

Causes and corrective actions
Operation panel
PS
indication
Name
PU stop
Stop with
Description
(For Pr.75 refer to page 178.)
Check point
Check for a stop made by pressing
Corrective
Turn the start signal OFF and release with
action
Operation panel
RB
indication
Name
Regenerative brake pre-alarm
Appears if the regenerative brake duty reaches or exceeds 85% of the Pr.70 Special regenerative brake duty value.
When the setting of Pr.70 Special regenerative brake duty is the initial value (Pr.70 = "0"), this warning does not occur. If
the regenerative brake duty reaches 100%, a regenerative overvoltage (E. OV_) occurs.
Description
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.192 (output terminal
function selection). (Refer to page 144)
 Check that the brake resistor duty is not high.
Check point
 Check that the Pr.30 Regenerative function selection and Pr.70 Special regenerative brake duty settings are correct.
Corrective
 Increase the deceleration time.
 Check that the Pr.30 Regenerative function selection and Pr.70 Special regenerative brake duty settings.
action
Operation panel
TH
indication
Name Electronic thermal relay function pre-alarm
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.
Description The THP signal can be simultaneously output with the [TH] display. For the terminal used for THP signal output,
assign the function by setting "8 (positive logic) or 108 (negative logic)" in any of Pr.190 to Pr.192 (output terminal
function selection). (Refer to page 144)
 Check for large load or sudden acceleration.
Check point
 Is the Pr.9 Electronic thermal O/L relay setting is appropriate? (Refer to page 130)
Corrective
 Reduce the load and speed of operation.
action  Set an appropriate value in Pr.9 Electronic thermal O/L relay. (Refer to page 130)
Operation panel
MT
indication
Name
Maintenance signal output
Indicates that the cumulative energization time of the drive unit has reached a given time.
Description When the setting of Pr.504 Maintenance timer alarm output set time is the initial value (Pr.504 = "9999"), this warning does
not occur.
The Pr.503 Maintenance timer setting is larger than the Pr.504 Maintenance timer alarm output set time setting.
Check point
(Refer to page 248)
Corrective
Setting "0" in Pr.503 Maintenance timer erases the signal.
action
Operation panel
HP1, HP2
indication
Name
Home position return error
Description
Appears when an error occurs during the home position return operation under position control. (Refer to page 104)
Check point
Identify the cause of the error occurrence.
Corrective
Check the parameter setting, and check that the input signal is correct.
action
270
FR-PU07
of the PU is set in Pr.75 Reset selection/disconnected PU detection/PU stop selection.
of the operation panel.
FR-PU07
FR-PU07
FR-PU07
,
FR-PU07
PS
.
RB
TH
MT
——