8.3 Maintenance
310 SIEPYEUOQ2A01A AC Drive Q2A Technical Manual
◆ Alarm Outputs for Maintenance Monitors
You can use H2-xx: MFDO Function Select to send a message that tells you when a specified component is near
the end of its performance life estimate. Set the applicable value to H2-xx as shown in the table below for your
component.
When the specified component is near the end of its performance life estimate, the MFDO terminals set for H2-xx
= 63 [Maintenance] will turn ON, and the keypad will show an alarm that identifies the component to replace.
Table 8.9 Maintenance Period Alarms
Display Alarm Name Cause Solution
MFDO
(Setting Value in
H2-xx)
LT-1
Cooling Fan
Maintenance Time
The cooling fan is at 90% of its performance life
estimate.
Replace the cooling fan, then set o4-03 = 0 [Fan.Oper
Setting = 0 h] to reset the cooling fan operation time.
63
LT-2
Capacitor
Maintenance Time
The main circuit and control circuit capacitors
are at 90% of their performance life estimate.
Replace the board or the drive.
Contact the manufacturer or your nearest sales
representative to replace the board.
LT-3
SoftChargeBypassRe
lay MainteTime
The soft charge bypass relay is at 90% of its
performance life estimate.
Replace the board or the drive.
Contact the manufacturer or your nearest sales
representative to replace the board.
LT-4
IGBT Maintenance
Time (50%)
The IGBTs are at 50% of their performance life
estimate.
Check the load, carrier frequency, and output frequency.
TrPC
IGBT Maintenance
Time (90%)
The IGBTs are at 90% of their performance life
estimate.
Replace the IGBTs or the drive.
4
◆ Related Parameters
Replace the component, then set Maintenance Setting o4-03, o4-05, o4-07, and o4-09 = 0 to reset the
Maintenance Monitor. 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.
Note:
The drive installation environment has an effect on the maintenance period.
Table 8.10 Maintenance Setting Parameters
Parameter Function
o4-03 [Fan.Oper Setting] Sets the value from which to start the cumulative drive cooling fan operation time in 10-hour units.
Note:
When o4-03 = 30 has been set, the drive will count the operation time for the cooling fan from 300 hours
and U4-03 [Fan Oper.Time] will show 300 h.
o4-05 [Cap.Maint.Setting]
Sets the value from which to start the count for the main circuit capacitor maintenance period as a percentage.
o4-07 [PreChgRly Preset Maintenance Cnt] Sets as a percentage the value from which to start the count for the soft charge bypass relay maintenance
time.
o4-09 [IGBT Preset Maintenance Cnt] Sets the value from which to start the count for the IGBT maintenance period as a percentage.
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