Periodic Maintenance; Periodic Maintenance; Replacement Parts - YASKAWA V1000 Technical Manual

7.3 Periodic Maintenance

7.3

Periodic Maintenance

The drive has various "maintenance monitors." This feature provides advance maintenance warning and eliminates the
need to shut down the entire system for unexpected problems. The drive allows the user to check the following maintenance
periods.
• Cooling Fan
• Electrolytic Capacitors (Main Circuit)
• Inrush Prevention Circuit
• IGBT
u

Replacement Parts

Table 7.3 contains the estimated performance life of components that require replacement during the life of the drive. Only
use Yaskawa replacement parts for the appropriate drive model and revision.
Electrolytic Capacitors (Main Circuit)
<1> The drive has few serviceable parts and may require complete drive replacement.
NOTICE: Estimated performance life based on specific usage conditions. These conditions are provided for the purpose of replacing
parts to maintain performance. Some parts may require more frequent replacement due to poor environments or rigorous use.
Usage conditions for estimated performance life:
• Ambient temperature: Yearly average of 40 °C
• Load factor: 80% maximum
• Operation time: 24 hours a day
n Performance Life Monitors
The drive calculates the maintenance period for components that may require replacement during the life of the drive. A
percentage of the maintenance period is displayed on the LED digital operator by viewing the appropriate monitor
parameter.
When the maintenance period reaches 100%, there is increased risk that the drive may malfunction. Yaskawa recommends
checking the maintenance period regularly to ensure maximum performance life.
Refer to Recommended Periodic Inspection on page 292
Parameter
U4-03
Cooling Fan
U4-04
Main Circuit (DC bus)
U4-05
Electrolytic Capacitors
U4-06 Inrush (pre-charge) relay
U4-07 IGBT
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-oo = 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
Digital Operator Alarm Display
<1>
<1>
294
Table 7.3 Estimated Performance Life
Component
Cooling Fan
Table 7.4 Performance Life Monitors Used for Component Replacement
Component
Displays the accumulated operation time of the cooling fan, from 0 to 99999 hours. This value
is automatically reset to 0 once it reaches 99999.
Displays the accumulated cooling fan operation time as a percentage of the specified
maintenance period (displayed in percent %).
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 7.5 to indicate the specific components that may need maintenance.
Table 7.5 Maintenance Alarms
The cooling fans have reached 90% of their designated
LT-1
life time.
The DC bus capacitors have reached 90% of their
LT-2
designated life time.
for more details.
Function
YASKAWA ELECTRIC SIEP C710606 16C YASKAWA AC Drive – V1000 Technical Manual
Estimated Performance Life
10 years
<1>
10 years
Contents
Corrective Action
Replace the cooling fan.
Contact a Yaskawa representative or
the nearest Yaskawa sales office on
possible drive replacement.