Yaskawa J1000 Compact V/f Control Drive - Manual (Page 169)

Table 6.4 Performance Life Monitors Used for Component Replacement
Parameter Component Contents
U4-04 Cooling Fan
Displays the accumulated cooling fan operation time as a percentage of the
specified maintenance period (displayed in percent %).
U4-05
Main Circuit (DC bus)
Electrolytic Capacitors
Displays the accumulated time the capacitors are used as a percentage of the
specified maintenance period.
U4-06
Inrush (pre-charge)
relay
Displays the number of times the drive is powered up as a percentage of the
performance life of the inrush circuit.
U4-07 IGBT Displays the percentage of the maintenance period reached by the IGBTs.
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- = 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 6.5 to indicate the specific components
that may need maintenance.
Table 6.5 Maintenance Alarms
Digital Operator Alarm
Display
Function Corrective Action
<1> LT-1
The cooling fans have reached 90% of their
designated life time.
Replace the cooling fan.
<1> LT-2
The DC bus capacitors have reached 90%
of their designated life time.
Contact a Yaskawa
representative or the nearest
Yaskawa sales office on
possible drive replacement.
<1> LT-3
The DC bus charge circuit has reached
90% of its designated life time.
Contact a Yaskawa
representative or the nearest
Yaskawa sales office on
possible drive replacement.
<1> LT-4
The IGBTs have reached 50% of their
designated life time.
Check the load, carrier
frequency, and output
frequency.
<2> TrPC
The IGBTs have reached 90% of their
designated life time.
Contact a Yaskawa
representative or the nearest
Yaskawa sales office on
possible drive replacement.
<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).
6.3 Periodic Maintenance
YASKAWA ELECTRIC TOEP C710606 26D YASKAWA AC Drive – J1000 Quick Start Guide 169
6
Periodic Inspection & Maintenance