YASKAWA A1000 Series Quick Start Manual page 121

Parameter Component
U4-05 DC Bus Capacitors
U4-06 Inrush (pre-charge) Relay
U4-07 IGBT
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-
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 the IGBTs have reached 50% of their expect performance life. Additionally the digital operator will
display an alarm like shown in
Alarm Display
LT-1
<1>
LT-2
<1>
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.
YASKAWA ELECTRIC TOEP C710616 21C YASKAWA AC Drive - A1000 Quick Start Guide
Displays the accumulated time the capacitors are used as a percentage of the specified
maintenance period.
Displays the number of times the drive is powered up as a percentage of the performance life
of the inrush circuit.
Displays the percentage of the maintenance period reached by the IGBTs.
Table 58 to indicate the specific components that may need maintenance.
Table 58 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 IGBT's have reached 50% of their designated
life time.
The IGBT's have reached 90% of their designated
life time.
Refer to Parameter List on page 131
6 Periodic Inspection & Maintenance
Contents
Corrective Action
Replace the cooling fan.
Replace the drive.
Replace the drive.
Check the load, carrier frequency, and output
frequency.
Replace the drive.
= 10).
= 10).
for details on parameter settings.
= 2F),
= 2F). The alarm
=
6
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