Mitsubishi Electric FR-A800 Series Instruction Manual page 363

WARNING
• When measuring the main circuit capacitor capacity (Pr.259 = "1 or 11"), 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 "
panel or the parameter unit. As an alert output, bit 2 of Pr.255 is turned 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 of 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.
• For replacement of each part, contact the nearest Mitsubishi FA center.
 Estimated residual life display of the main circuit capacitor (Pr.506)
(Standard models and IP55 compatible models)
• 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.
• The remaining life of the main circuit capacitor is calculated from the energization time and the inverter output power (100%
= Start of service life). When the remaining life of the main circuit capacitor falls below 10%, bit 5 of Pr.255 Life alarm
status display turns ON and a warning is output by the Y90 signal.
 Life display of the relay contacts of terminals A, B, and C (Pr.507, Pr.508)
• The degree of deterioration of the relay contacts of terminals A1, B1, and C1 is displayed in Pr.507, and that for terminals
A2, B2, and C2 is displayed in Pr.508.
• The number of times the contacts of relay turn ON is counted down from 100% (0 time) by 1% (500 times). When the
counter reaches 10% (45,000 times), bit 6 or bit 7 of Pr.255 turns ON and a warning is output by the Y90 signal.
• Any value can be set in Pr.507 and Pr.508. After replacement of the control circuit terminal block or installation of a control
terminal option, set Pr.507 and Pr.508 again.
 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.
• 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).
NOTE
• 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.
362
5. PARAMETERS
5.7 (E) Environment setting parameters
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" (FN2) appears on the operation panel (FR-DU08) when the rotations per minute is less than
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" (FN) is displayed on the operation