Mitsubishi Electric FR-CC2-N Series Instruction Manual page 146

Operation panel
indication
Name Product series error
• The series of source converter unit for Parameter copy or the parameter verification is different from that of target
converter unit.
Description
• The data in the operation panel are not correct for the parameter write from the operation panel to the converter
unit for Parameter copy or the parameter verification.
• Check that the source converter unit for Parameter copy or the parameter verification is in the same series as
the target converter unit.
Check point
• Check that Parameter copy was not interrupted by switching OFF the converter unit power or by disconnecting
the operation panel.
• Perform Parameter copy or the parameter verification between converter units of the same series.
Corrective action
• Perform parameter copy to the operation panel from the converter unit again.
Operation panel
indication
• The RES signal is turned ON.
• The operation panel and the converter unit cannot make normal communication (contact faults of the connector).
Description • This error may occur when the voltage at the input side of the converter unit drops.
• When using a separate power source for the control circuit power (R1/L11, S1/L21) from the main circuit power
(R/L1, S/L2, T/L3), this error may appear at turning ON of the main circuit. It is not a fault.
• Turn OFF the RES signal.
Corrective action • Check the connection between the operation panel and the converter unit.
• Check the voltage on the input side of the converter unit.
 Warning
Output is not shut off when a protective function is activated.
Operation panel
indication
Name Electronic thermal relay function pre-alarm
If the accumulated electronic thermal value reaches 85%, TH is displayed and the THP signal is output. If the
cumulative value reaches or exceeds the specified value, the protection circuit is activated to stop the outputs of
Description the converter unit.
For the terminal used for the THP signal output, assign the function by setting "8" (positive logic) or "108"
(negative logic) in any parameter from Pr.190 to Pr.195 (Output terminal function selection).
Check point Check for large load or sudden acceleration.
Corrective action Reduce the load and frequency of operation.
Operation panel
indication
Name Maintenance signal output
Appears when the converter unit's cumulative energization time reaches or exceeds the parameter set value. Set
the time until the MT is displayed using Pr.504 Maintenance timer 1 warning output set time (MT1), Pr.687
Description
Maintenance timer 2 warning output set time (MT2), and Pr.689 Maintenance timer 3 warning output set
time (MT3). MT does not appear when the settings of Pr.504, Pr.687, and Pr.689 are initial values (9999).
Check point The set time of maintenance timer has been exceeded. (Refer to
Take appropriate countermeasures according to the purpose of the maintenance timer setting.
Corrective action Setting "0" in Pr.503 Maintenance timer 1, Pr.686 Maintenance timer 2, and Pr.688 Maintenance timer 3
clears the indication.
 Alarm
Output is not shut off when a protective function is activated. The Alarm (LF) signal can be output depending on the parameter
setting. (Set "98" in Pr.190 to Pr.195 (Output terminal function selection). Refer to
Operation panel
indication
Name Fan alarm
Description Appears when the cooling fan in the converter unit stops due to a fault or slows down.
Check point Check the cooling fan for a failure.
Corrective action The fan may be faulty. Contact your sales representative.
 Fault
When a protective function is activated, the inverter output is shut off and a fault signal is output.
rE4
Err.
TH
MT1 to MT3
FN
to
page 82.)
page 90.)
6. PROTECTIVE FUNCTIONS
6.5 Causes and corrective actions
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