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5. PARAMETERS
5.2 (E) Environment setting parameters
1
2
3
4
5
6
7
8
9
10
5.2.10 Converter unit parts life display
The degrees of deterioration of main circuit capacitor, cooling fan, and inrush current limit circuit can be diagnosed on the
monitor. When a part approaches the end of its life, an alarm can be output by self diagnosis to prevent a fault. (Note that the
life diagnosis of this function should be used as a guideline only, the life values are theoretical calculations.)
Life alarm display and signal output (Y90 signal, Pr.255)
• Whether or not the parts of the control circuit capacitor, cooling fan, or inrush current limit circuit have reached the life alarm
output level can be checked with
Pr.255 Life alarm status display
and the Life alarm (Y90) signal.
○
: Parts reaching alarm output level ×: Parts not reaching alarm output level
• The Life alarm (Y90) signal turns ON when any of the control circuit capacitor, cooling fan, and inrush current limit circuit
reaches the life alarm output level.
• For the terminal used for the Y90 signal, set "90" (positive logic) or "190" (negative logic) in any parameter from
Pr.190 to
Pr.195 (Output terminal function selection)
.
NOTE
• Changing the terminal assignment using
Pr.190 to Pr.195 (Output terminal function selection)
may affect the other
functions. Set parameters after confirming the function of each terminal.
Life display of the inrush current limit circuit (Pr.256)
• The life of the inrush current limit circuit (relay, contactor and inrush resistor) is displayed in
Pr.256
.
• The number of contact (relay, contactor, thyristor) ON times is counted, and it is counted down from 100% (0 time) every
1%/10,000 times. When the counter reaches 10% (900,000 times), bit 3 of
Pr.255
is turned ON (set to 1) and the Y90
signal is also output as an alert.
Life display of the control circuit capacitor (Pr.257)
• The deterioration degree of the control circuit capacitor is displayed in
Pr.257
.
• The control circuit capacitor life calculated from the operating conditions (energization time and temperature) is counted
down from 100%. When the control circuit capacitor life goes down from 10%, bit 0 of
Pr.255
is turned ON (set to 1) and
the Y90 signal is also output as an alert.
Pr.
Name
Initial value
Setting range
Description
255
E700
Life alarm status display
0
(0 to 15)
Displays whether or not the parts of the control circuit
capacitor, cooling fan, and inrush current limit circuit
have reached the life alarm output level. Read-only.
256
E701
Inrush current limit circuit life
display
100%
(0 to 100%)
Displays the deterioration degree of the inrush current
limit circuit. Read-only.
257
E702
Control circuit capacitor life
display
100%
(0 to 100%)
Displays the deterioration degree of the control circuit
capacitor. Read-only.
Pr.255
bit 3
bit 2
bit 0
Decimal
Binary
13
1101
○
○
○
12
1100
○
○
×
9
1001
○
×
○
8
1000
○
×
×
5
0101
×
○
○
4
0100
×
○
×
1
0001
×
×
○
0
0000
×
×
×
0 0 0 0 0 0 0 0 0 0 0 0 1 0 0
bit0 Control circuit capacitor life
1
15
bit
7
0
bit2 Cooling fan life
bit3 Inrush current limit circuit life
•
Pr.255
read
•
Pr.255
setting read
Bit image is displayed
in decimal
