Periodic Maintenance; Periodic Maintenance; Replacement Parts - YASKAWA J1000 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.
Component
Cooling Fan
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 30 °C
• Load factor: 80% maximum
• Operation time: 12 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 157
Parameter Component
U4-04 Cooling Fan
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 Table 7.5
Digital Operator Alarm Display
<1> LT-1
<1>
LT-2
158
Table 7.3 Estimated Performance Life
Table 7.4 Performance Life Monitors Used for Component Replacement
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.
to indicate the specific components that may need maintenance.
Table 7.5 Maintenance Alarms
The cooling fans have reached 90% of their designated
life time.
The DC bus capacitors have reached 90% of their
designated life time.
http://nicontrols.com
Estimated Performance Life
for more details.
Contents
Function
YASKAWA ELECTRIC SIEP C710606 31B YASKAWA AC Drive – J1000 Technical Manual
2 ~ 3 years
<1>
10 years
Corrective Action
Replace the cooling fan.
Contact a Yaskawa representative or the
nearest Yaskawa sales office on
possible drive replacement.