Yaskawa YASNAC PC NC Maintenance Manual - Manual (Page 170)

The VS-626M5 PC NC Maintenance Manual
4-149
Parts Replacement Schedule (Guidelines)
Replace the following parts periodically, for a long, safe, trouble-free
working life of the VS-626M5 and VS-656MR5.
Note: Operating conditions are as follows:
Ambient temperature: 30
°
C (86
°
F) yearly average
Load factor: 80% or below
Operation rate: 20 hours or below /day
4.9 Troubleshooting
This chapter describes the inverter and converter fault display, the fault contents
caused by motor malfunctions, and the corrective actions to be taken.
When the VS-626M5 or the VS-656MR5 detects a fault, the fault number is dis-
played on the 7-segment LED, the fault contact output is activated, and the motor
coasts to a stop. Check the cause and take corrective actions.
If the inspections or corrective actions described cannot solve the problem, con-
tact your Yaskawa customer service representative immediately.
To restart, turn ON the reset input signal, depress the RESET key, or shut OFF the
main circuit power supply once to reset the stop status.
Table 4.35: Parts Replacement Schedule
Parts Interval (Approx.) Remarks
Inverter/
Converter Cooling Fan 2 to 3 years Replace.
Smoothing
Capacitor 5 years Inspect to determine whether replacement
is required.
Breakers or
Relays æ Inspect to determine whether replacement
is required.
Fuse 10 years Replace.
Aluminum Elec-
trolytic Capacitor
on PC Board 5 years Inspect to determine whether replacement
is required.
Motor Bearing 12,000 hours or 2 years Disassemble and replace worn items or
provide necessary maintenance.
Cooling Fan 15,000 hours or 2 years Replace the fan.
Overhaul 20,000 hours or 5 years Contact your Yaskawa customer service
representative.