Display Of The Life Of The Inverter Parts - Mitsubishi Electric F700 Instruction Manual

6.1.4

Display of the life of the inverter parts

The self-diagnostic alarm is output when the life span of the control circuit capacitor, cooling fan, each parts of the
inrush current limit circuit is near its end. It gives an indication of replacement time .
The life alarm output can be used as a guideline for life judgement.
Parts
Main circuit capacitor
Control circuit capacitor
Inrush current limit circuit
Cooling fan
For the life check of the main circuit capacitor, the alarm signal (Y90) will not be output if a measuring method of (2) is
not performed. (Refer to page 128.)
(1) Display of the life alarm
· Pr. 255 Life alarm status display can be used to confirm that the control circuit capacitor, main circuit capacitor,
cooling fan, and each parts of the inrush current limit circuit has reached the life alarm output level.
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
POINT
Life check of the main circuit capacitor needs to be done by Pr. 259. (Refer to page 128.)
Judgement level
85% of the initial capacity
Estimated 10% life remaining
Estimated 10% life remaining (Power on: 100,000 times left)
Less than 50% of the predetermined speed
0
1
bit0 Control circuit capacitor life
bit1 Main circuit capacitor life
bit2 Cooling fan life
bit3 Inrush current limit circuit life
Inrush Current Cooling
Limit Circuit Life Fan Life
• Pr.255 read
Main Circuit Control Circuit
Capacitor Life Capacitor Life
: with alarm, : without alarm
Inspection item
• Pr.255 setting read
Bit image is displayed
in decimal
127
6