YASKAWA A1000 Technical Manual page 154

6.2 Periodic Maintenance
n Alarm Outputs for Maintenance Monitors
An output can be set up to inform the user when a specific components has neared its expected performance life.
When one of multi-function digital output terminals has been assigned the maintenance monitor function (H2-oo = 2F), the
terminal will close when the cooling fan, DC bus capacitors, or DC bus pre-charge relay reach 90% of the expected performance
life, or when the IGBTs have reached 50% of their expected performance life. Additionally the digital operator will display
an alarm like shown in Table 6.5
Digital Operator Alarm Display
<1>
LT-1
<1>
LT-2
<1>
LT-3
<1>
LT-4
<2>
TrPC
<1> This alarm message will be output only if the Maintenance Monitor function is assigned to one of the digital outputs (H2-oo = 2F). The alarm
will also trigger a digital output that is programmed for alarm indication (H2-oo = 10).
<2> This alarm message will always be output, even if the Maintenance Monitor function is not assigned to any of the digital outputs (H2-oo = 2F).
The alarm will also trigger a digital output that is programmed for alarm indication (H2-oo = 10).
n Related Drive Parameters
Use parameters o4-03, o4-05, o4-07, and o4-09 to reset a Maintenance Monitor to zero after replacing a specific component.
Refer to Parameter List on page 175
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.
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to indicate the specific components that may need maintenance.
Table 6.5 Maintenance Alarms
Function
The cooling fans have reached 90% of their designated
life time.
The DC bus capacitors have reached 90% of their
designated life time.
The DC bus charge circuit has reached 90% of its
designated life time.
The IGBTs have reached 50% of their designated life
time.
The IGBTs have reached 90% of their designated life
time.
for details on parameter settings.
YASKAWA ELECTRIC TOEP C710616 41B YASKAWA AC Drive - A1000 Quick Start Guide
Corrective Action
Replace the cooling fan.
Contact a Yaskawa representative or the
nearest Yaskawa sales office on
possible drive replacement.
Contact a Yaskawa representative or the
nearest Yaskawa sales office on
possible drive replacement.
Check the load, carrier frequency, and
output frequency.
Contact a Yaskawa representative or the
nearest Yaskawa sales office on
possible drive replacement.