Mitsubishi Electric FR-E800 Instruction Manual page 255

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.197 (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.197 (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.
• 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 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 A, B, and C is displayed in Pr.507, and that for terminals A2,
B2, and C2 is displayed in Pr.508 (only for the IP67 model).
• 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 (IP67 model only) 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 (IP67 model only).
 Life display of the inverter module (Pr.509)
• The degree of deterioration of the inverter module is displayed in Pr.509.
• The degree of deterioration of the inverter module is determined by the change in the surrounding air temperature of the
module. (The degree is counted down from 100% (no deterioration).) When the remaining life of the inverter module
reaches 15%, bit 8 of Pr.255 turns ON and a warning is output by the Y90 signal.
 Environmental impact diagnosis function (corrosion level display)
(Pr.198)
• The risk of the inverter's corrosive damage (degree of corrosion) can be checked by using a metal corrosion sensor.
• The degree of corrosion is monitored using the metal corrosion sensor (the degree is counted up from level 1). Use Pr.198
to check the corrosion level. When level 3 is reached, bit 9 of Pr.255 turns ON, a warning is output by the Y90 signal, and
"Cor" appears on the LCD display of the operation panel.
254
8. (E) Environment Setting Parameters
8.16 Inverter parts life display