Mitsubishi Electric 800 Series Instruction Manual page 158

5.
Check that "3" (measurement complete) is set in Pr.259, read Pr.258, and check the deterioration degree of the
main circuit capacitor.
Pr.259 Description
0 No measurement
1 Start measurement
2 During measurement
3 Measurement complete
8 Forced end
9 Measurement error
NOTE
• When the main circuit capacitor life is measured under the following conditions, "forced end" (Pr.259 = "8"), or "measurement
error" (Pr.259 = "9") may occur, or the status may remain in "measurement start" (Pr.259 = "1"). To perform measurement,
first eliminate the following conditions. Under the following conditions, even if "measurement complete" (Pr.259 = "3") is
reached, measurement cannot be performed correctly.
- FR-HC2 or FR-XC is connected.
- DC power supply is connected to the terminals P/+ and N/-.
- The power supply is switched ON during measurement.
- The motor is not connected to the inverter.
- The motor is running (coasting).
- The motor capacity is smaller than the inverter capacity by two ranks or more.
- The inverter output is shut off or a fault occurred while the power was OFF.
- The inverter output is shut off with the MRS signal.
- The start command is given while measuring.
- The applied motor setting is incorrect.
• Operation environment: Surrounding air temperature (annual average of 40°C (free from corrosive gas, flammable gas, oil
mist, dust and dirt)).
Output current: 80% of the inverter rating
• Since repeated inrush currents at power ON will shorten the life of the converter circuit, frequent starts and stops of the
magnetic contactor must be avoided.
WARNING
• When measuring the main circuit capacitor capacity (Pr.259 = "1"), the DC voltage is applied to the motor for about 1
second at power OFF. Never touch the motor terminal, etc. right after powering OFF to prevent an electric shock.
 Life display of the cooling fan
• If a cooling fan speed of less than the specified speed is detected, Fan alarm "FN" is displayed on the operation panel or
the parameter unit. As an alert output, bit 2 of Pr.255 turns ON (set to 1), and the Y90 signal and Alarm (LF) signal are
also output.
• For the terminal used for the LF signal, set "98" (positive logic) or "198" (negative logic) in any parameter from Pr.190 to
Pr.196 (Output terminal function selection).
NOTE
• When the inverter is mounted with two or more cooling fans, "FN" is displayed even only one of the fans is detected.
• Changing the terminal assignment using Pr.190 to Pr.196 (Output terminal function selection) may affect the other
functions. Set parameters after confirming the function of each terminal.
 Display estimated main circuit capacitor residual life (Pr.506)
• Even when the power supply cannot be turned OFF, the remaining life of the main circuit capacitor can be estimated
without stopping the operation. Note that the remaining life of the main circuit capacitor estimated by this function is
theoretical, and should be used as a guideline only.
• The estimated residual life of the main circuit capacitor is displayed in Pr.506.
Remarks
Initial value
Measurement starts when the power supply is switched OFF.
Only displayed and cannot be set.
7. (E) Environment Setting Parameters
7.15 Inverter parts life display
1
2
3
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5
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7
8
9
10
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