YASKAWA L1000A Series, Техническое руководство

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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-DD = 2F),
the terminal will close when the cooling fan, DC bus capacitors, or DC bus pre-charge relay reach 90% o f 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 7.5 to indicate the specific components that may need maintenance.
Table 7.5 Maintenance Alarms
Alarm Display
Function Corrective Action
LED Operator LCD Operator
<1>
LT-1
The cooling fans have reached 90% o f their designated lifetime. Replace the cooling fan.
<1>
LT-2
The DC bus capacitors have reached 90% o f their designated
lifetime.
Replace the drive.
<1>
LT-3
The DC bus charge circuit has reached 90% o f its designated
lifetime.
Replace the drive.
<1>
LT-4
The IGBTs have reached 50% o f their designated lifetime. Check the load, carrier frequency, and output frequency.
<2>
TrPC
The IGBTs have reached 90% o f their designated lifetime. Replace the drive.
<1> This alarm message will be output only if the M aintenance M onitor function is assigned to one o f the digital outputs (H 2 -D D = 2F). The alarm
will also trigger a digital output that is programmed for alarm indication (H 2 -D D = 10).
<2> This alarm message will always be output, even i f the M aintenance M onitor function is not assigned to any o f the digital outputs (H 2 -D D =
2F). The alarm will also trigger a digital output that is programmed for alarm indication (H 2 -D D = 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 324 for details on parameter settings.
N O TICE: I f th e se p a ra m e te rs are n o t re s e t a fte r the c o rre s p o n d in g p a rts h a v e b e e n replaced, the M a in te n a n c e M o n ito r fu n ctio n w ill
c o n tin u e to c o u n t d o w n the p e rfo rm a n c e life from the value th a t w as re a c h e d w ith the o ld part. I f the M a in te n a n c e M o n ito r is n o t reset,
the drive w ill n o t h a v e th e c o rre c t value o f the p e rfo rm a n c e life fo r the n e w com ponent.
276 YASKAWA ELECTRIC SIEP C710616 33D YASKAWA AC Drive L1000A Technical Manual