YASKAWA T1000A Technical Manual page 318

7.3 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-
the terminal will close when the cooling fan, circulation 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
LED Operator LCD Operator
LT-1
<1>
LT-2
<1>
LT-3
<1>
LT-4
<1>
LTPC
<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-
n
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.
318
Table 7.5 to indicate the specific components that may need maintenance.
Table 7.5 Maintenance Alarms
Function
The 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 Table on page 367
YASKAWA ELECTRIC SIEP C710616 30B YASKAWA AC Drive T1000A Technical Manual
Corrective Action
Replace the 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
=