Mitsubishi Electric FR-A700 Technical Manual page 330

2.15.8 Display of the life of the inverter parts [Pr. 255 to 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
[Pr. ] Name
255
Life alarm status display
Inrush current limit circuit
256
life display
Control circuit capacitor
257
life display
Main circuit capacitor life
258
display
Main circuit capacitor life
259
measuring
(1) Life alarm display and signal output (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).
The life alarm signal (Y90) turns ON when any of the
control circuit capacitor, main circuit capacitor,
cooling fan and inrush current limit circuit reaches the
life alarm output level.
For the terminal to output Y90 signal, assign 90
(positive logic) or 190 (negative logic) to any of
A700 F700
[Pr.190 to 196 Output terminal function selection],
[Pr.190 to 192 Output terminal function selection], or
E700
[Pr.190, 192 Output terminal function selection].
D700
When using a built-in option (FR-A7AY, FR-A7AR) in
, the following life signals can be
A700 F700 E700
[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 Setting
Value Range
Displays whether the control circuit capacitor, main circuit capacitor, cooling
0 (0 to 15) fan, and each parts of the inrush current limit circuit has reached the life alarm
output level or not. Reading only
Displays the deterioration degree of the inrush current limit circuit. Reading
100% (0 to 100%)
only
100% (0 to 100%) Displays the deterioration degree of the control circuit capacitor. Reading only
Displays the deterioration degree of the main circuit capacitor. Reading only
100% (0 to 100%)
The value measured by [Pr. 259] is displayed.
Setting 1 and switching the power supply OFF starts the measurement of the main
0, 1
circuit capacitor life.
0
Switch the power supply ON again and check the [Pr. 259] setting. Measurement is
(2, 3, 8, 9)
complete if the setting is 3. Displays the deterioration degree in [Pr. 258] .
Inrush Current
Suppression Circuit Life
×
×
×
×
×
×
×
×
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.
output individually: control circuit capacitor life signal
(Y86), main circuit capacitor life signal (Y87), cooling
fan life signal (Y88), and inrush current limit circuit life
signal (Y89).
bit 15
0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1
• Pr.255 read
Cooling Fan Life
Capacitor Life
×
×
×
×
×
×
×
×
: With warnings, ×: Without warnings
364
PARAMETER
common
(common)
Description
7 0
bit0 Control circuit capacitor life
bit1 Main circuit capacitor life
bit2 Cooling fan life
bit3 Inrush current limit circuit life
• Pr.255 setting read
Bit image is displayed
in decimal
Main Circuit Control Circuit
Capacitor Life
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×
×