YASKAWA L1000A Technical Manual page 324

7.3 Periodic Maintenance
■ 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- = 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
Alarm Display
LED Operator LCD Operator
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- = 2F). The alarm
will also trigger a digital output that is programmed for alarm indication (H2- = 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- =
2F). The alarm will also trigger a digital output that is programmed for alarm indication (H2- = 10).
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 Table on page 394
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.
324
Table 7.5 to indicate the specific components that may need maintenance.
Table 7.5 Maintenance Alarms
Function
The cooling fans have reached 90% of their designated lifetime.
The DC bus capacitors have reached 90% of their designated
lifetime.
The DC bus charge circuit has reached 90% of its designated
lifetime.
The IGBTs have reached 50% of their designated lifetime.
The IGBTs have reached 90% of their designated lifetime.
for details on parameter settings.
YASKAWA ELECTRIC SIEP C710616 38F YASKAWA AC Drive - L1000A Technical Manual
Corrective Action
Replace the cooling fan.
Replace the drive.
Replace the drive.
Check the load, carrier frequency, and output frequency.
Replace the drive.