Mitsubishi Electric FR-A820-00046 (0.4K) Instruction Manual page 345

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, FR-CV, MT-RC, or a sine wave filter is connected.
- Terminals R1/L11, S1/L21 or DC power supply is connected to 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 (refer below) is detected, Fan alarm "
the operation panel and the parameter unit. As an alarm display, Pr.255 bit 2 is turned ON and also a warning is output to
the Y90 signal and Alarm (LF) signal.
• For the terminal used for the LF signal, set "98" (positive logic) or "198" (negative logic) in any of Pr.190 to Pr.196 (Output
terminal function selection).
FR-A820-00250(3.7K) or lower,
FR-A820-03160(55K) or higher
FR-A840-00126(3.7K) or lower
FR-A820-00340(5.5K) to FR-A820-02330(45K)
FR-A840-00170(5.5K) to FR-A840-03610(132K)
FR-A846-00250(7.5K) to FR-A846-00470(18.5K)
FR-A840-04320(160K) or higher
FR-A842-07700(315K) or higher
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.
• For replacement of each part, contact the nearest Mitsubishi FA center.
 Life display of internal air circulation fans (IP55 compatible models)
• IP55 compatible models are equipped with the internal air circulation fan inside the inverter other than the cooling fan. The
internal fan fault "
70% of the rated value for the internal air circulation fan. (FN is displayed on the parameter unit (FR-PU07).) As an alarm
display, Pr.255 bit 4 is turned ON and also a warning is output to the Y90 signal and Alarm (LF) signal.
344
5. PARAMETERS
5.7 (E) Environment setting parameters
Capacity
" (FN2) appears on the operation panel (FR-DU08) when the rotations per minute is less than
Warning level
Less than 50% of the rated
rotations per minute
Less than 70% of the rated
rotations per minute
Less than 1700 r/min
" (FN) is displayed on