YASKAWA A1000 Series Technical Manual page 350

7.3 Periodic Maintenance
Alarm Display
LED Operator LCD Operator
LT-3
<1>
LT-4
<1>
TrPC
<2>
<1> This alarm message will be output only if the Maintenance Monitor function is assigned to one of the digital outputs (H2-
will also trigger a digital output that is programmed for alarm indication (H2-
<2> This alarm message will always be output, even if the Maintenance Monitor function is not assigned to any of the digital outputs (H2-
2F). The alarm will also trigger a digital output that is programmed for alarm indication (H2-
■ Related Drive Parameters
Parameters o4-03, o4-05, o4-07, and o4-09 can be used to reset a Maintenance Monitor back to zero after a specific
component has been replaced.
NOTICE: If these parameters are not reset after the corresponding parts have been replaced, the Maintenance Monitor function will
continue to count down the performance life from the value that was reached with the old part. If the Maintenance Monitor is not reset,
the drive will not have the correct value of the performance life for the new component.
350
Function
The DC bus charge circuit has reached 90% of its designated life
time.
The IGBT's have reached 50% of their designated life time.
The IGBT's have reached 90% of their designated life time.
Refer to Parameter Table on page 400
YASKAWA ELECTRIC SIEP C710616 27C YASKAWA AC Drive A1000 Technical Manual
Corrective Action
Replace the drive.
Check the load, carrier frequency, and output frequency.
Replace the drive.
= 10).
= 10).
for details on parameter settings.
= 2F). The alarm
=