Display Of The Life Of The Inverter Parts (Pr. 255 To Pr .259) - Mitsubishi Electric F700 Instruction Manual

4.21.2 Display of the life of the inverter parts (Pr. 255 to Pr .259)

Degrees of deterioration of main circuit capacitor, control circuit capacitor, cooling fan and inrush current limit
circuit can be diagnosed by monitor.
When any part has approached the end of its life, an alarm can be output by self diagnosis to prevent a fault.
(Use the life check of this function as a guideline since the life except the main circuit capacitor is calculated
theoretically.)
For the life check of the main circuit capacitor, the alarm signal (Y90) will not be output if a measuring method of
(4) is not performed.
Parameter
Name
Number
255 Life alarm status display
Inrush current limit circuit
256
life display
Control circuit capacitor life
257
display
Main circuit capacitor life
258
display
Main circuit capacitor life
259
measuring
The above parameters can be set when Pr. 160 User group read selection = "0". (Refer to page 156.)
(1) Life alarm display and signal outuput (Y90 signal, Pr. 255)
⋅ Whether any of the control circuit capacitor, main circuit capacitor, cooling fan and inrush current limit circuit has reached
the life alarm output level or not can be checked by Pr. 255 Life alarm status display and life alarm signal (Y90).
bit 15 7
0 0 0 0 0 0 0 0 0 0 0 0 1 0 0
Pr. 255 Bit
(decimal) (binary)
15 1111
14 1110
13 1101
12 1100
11 1011
10 1010
9 1001
8 1000
7 0111
6 0110
5 0101
4 0100
3 0011
2 0010
1 0001
0 0000
Initial Value
0
100%
100%
100%
0
0
1
bit0 Control circuit capacitor life
bit1 Main circuit capacitor life
bit2 Cooling fan life
bit3 Inrush current limit circuit life
Inrush
Cooling
Current Limit
Fan Life
Circuit Life
×
×
×
×
×
×
×
×
× ×
× ×
× ×
× ×
Setting Range
Display whether the control circuit capacitor,
main circuit capacitor, cooling fan, and each
(0 to 15) parts of the inrush current limit circuit has
reached the life alarm output level or not.
Reading only
Display the deterioration degree of the inrush
(0 to 100%)
current limit circuit. Reading only
Display the deterioration degree of the control
(0 to 100%)
circuit capacitor. Reading only
Display the deterioration degree of the main
(0 to 100%) circuit capacitor. Reading only
The value measured by Pr. 259 is displayed.
Setting "1" and switching the power supply off
starts the measurement of the main circuit
0, 1 capacitor life.
(2, 3, 8, 9) When the Pr. 259 value is "3" after powering on
again, the measuring is completed. Read the
deterioration degree in Pr. 258.
• Pr.255 read
Main Circuit Control Circuit
Capacitor Life Capacitor Life
×
×
× ×
×
×
× ×
×
×
× ×
×
×
× ×
: With warnings, ×: Without warnings
Useful functions
Description
• Pr.255 setting read
Bit image is displayed
in decimal
217
4