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3.4.6 Reading maintenance information -- Menu #5 "Maintenance Information" --
Menu #5 "Maintenance Information" contains information necessary for performing maintenance on
the inverter. The menu transition in Menu #5 "Maintenance information" is as same as its of in Menu
#3 "Drive Monitoring."
Basic key operation
To view the maintenance information, set function code E52 to "2" (Full-menu mode) beforehand.
(1) Turn the inverter ON. It automatically enters Running mode. In that mode, press the
key to
switch to Programming mode. The function selection menu appears.
(2) Use the
and keys to display "Maintenance Information" (
EJG
).
(3) Press the
key to proceed to a list of maintenance item codes (e.g.
A
).
(4) Use the
and keys to display the desired maintenance item, then press the key.
The data of the corresponding maintenance item appears.
(5) Press the
key to return to a list of maintenance items. Press the key again to return to the
menu.
Table 3.20 Display Items for Maintenance Information
LED
Monitor
shows:
Item Description
A
Cumulative run
time
Shows the content of the cumulative power-ON time counter of the
inverter.
Unit: thousands of hours.
(Display range: 0.001 to 9.999, 10.00 to 65.53)
When the total ON-time is less than 10000 hours (display: 0.001 to
9.999), data is shown in units of one hour (0.001). When the total time is
10000 hours or more (display: 10.00 to 65.53), it is shown in units of 10
hours (0.01). When the total time exceeds 65535 hours, the counter will
be reset to 0 and the count will start again.
A
DC link bus
voltage
Shows the DC link bus voltage of the inverter main circuit.
Unit: V (volts)
A
Max.
temperature of
heat sink
Shows the maximum temperature of the heat sink for every hour.
Unit: qC (Temperatures below 20qC are displayed as 20qC.)
A
Max. effective
output current
Shows the maximum current in RMS for every hour.
Unit: A (amperes)
A
Capacitance of
the DC link bus
capacitor
Shows the current capacitance of the DC link bus capacitor (reservoir
capacitor) in %, based on the capacitance when shipping as 100%.
Refer to Chapter 7 "MAINTENANCE AND INSPECTION" for details.
Unit: %
A
Cumulative run
time of
electrolytic
capacitors on the
printed circuit
boards
Shows the content of the cumulative run time counter of the electrolytic
capacitors mounted on the printed circuit boards.
Unit: thousands of hours. (Display range: 0.001 to 99.99)
Shown in units of 10 hours.
When the total time exceeds 99990 hours, the count stops and the
display remains at 99.99.
A
Cumulative run
time of the
cooling fan
Shows the content of the cumulative run time counter of the cooling fan.
This counter does not work when the cooling fan ON/OFF control
(function code H06) is enabled and the fan is stopped.
Unit: thousands of hours. (Display range: 0.001 to 99.99)
Shown in units of 10 hours.
When the total time exceeds 99990 hours, the count stops and the
display remains at 99.99.
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