Mitsubishi Electric FR-F 700 EC Instruction Manual page 72

Operation Panel
RB
Indication
Name
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
Description
(E. OV_) occurs.
Appears only for the 01800 or more.
• 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 values are
correct.
• Increase the deceleration time.
Corrective action
• Check the Pr. 30 Regenerative function selection and Pr. 70 Special regenerative brake duty values.
Operation Panel
TH
Indication
Name
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.
Description
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
1. Check for large load or sudden acceleration.
Check point
2. Is the Pr. 9 Electronic thermal O/L relay setting is appropriate? (Refer to page 32.)
1. Reduce the load weight or the number of operation times.
Corrective action
2. Set an appropriate value in Pr. 9 Electronic thermal O/L relay. (Refer to page 32.)
Operation Panel
MT
Indication
Name Maintenance signal output
Description
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
Check point
setting. (Refer to
Corrective action Setting "0" in Pr. 503 Maintenance timer erraces the signal.
Operation Panel
CP
Indication
Name
Parameter copy
Appears when parameters are copied between models with capacities of 01160 or less and 01800 or
Description
more.
Resetting of Pr.9, Pr.30, Pr.51, Pr.52, Pr.54, Pr.56, Pr.57, Pr.70, Pr.72, Pr.80, Pr.90, Pr.158, Pr.190 to Pr.196,
Check point
and Pr.893 is necessary.
Corrective action Set the initial value in Pr. 989 Parameter copy alarm release.
FR-PU04
FR-PU04
FR-PU04
Instruction Manual (applied).)
FR-PU04
Causes and corrective actions
RB
TH
Instruction Manual (applied))
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