You can use H2-xx [MFDO Function Selection] 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 Table 1 for your component.

When the specified component is near the end of its performance life estimate, the MFDO terminals set for H2-xx = 2F [Maintenance Notification] will activate, and the keypad will show an alarm that identifies the component to replace.

Table 1. Maintenance Period Alarms

Display

Alarm Name

Cause

Possible Solutions

MFDO

(Setting Value in H2-xx)

LT-1

Cooling Fan Maintenance Time

The cooling fan is at 90% of its expected performance life.

Replace the cooling fan, then set o4-03 = 0 [Fan Operation Time Setting = 0 h] to reset the cooling fan operation time.

2F

LT-2

Capacitor Maintenance Time

The capacitors for the main circuit and control circuit are at 90% of expected performance life.

Replace the board or the drive.

Contact Yaskawa or your nearest sales representative to replace the board.

LT-3

SoftChargeBypassRelay MainteTime

The soft charge bypass relay is at 90% of its performance life estimate.

Replace the board or the drive.

Contact Yaskawa or your nearest sales representative to replace the board.

LT-4

IGBT Maintenance Time (50%)

The IGBT is at 50% of its expected performance life.

Check the load, carrier frequency, and output frequency.

TrPC

IGBT Maintenance Time (90%)

The IGBT is at 90% of its expected performance life.

Replace the IGBT or the drive.

10