Servopack Inspection - YASKAWA S Series User Manual

12.1.2 SERVOPACK Inspection

The SERVOPACK contains highly reliable parts and does not require daily inspection. Always
inspection the SERVOPACK at least once a year. Be sure to check user settings prior to opera-
tion because we reset user constants to standard settings when we ship overhauled SERVO-
PACKS.
Table 12.3 I n s p e c t i o n Items
Item
Clean Unit
Interior and
Circuit Boards
Loose Screws
Defective Parts in
Unit or on Circuit
Boards
■ Guidelines for Replacing Parts
The following parts are subject to mechanical wear or deterioration over time. To avoid failure,
replace these parts at the frequency indicated in the following table.
Table 12.4 P a r t s Replacement
Cooling fan
Smoothing Capacitor
Relays
Fuse
Aluminum Electrolytic Capacitor
on Circuit Board
Note Operating conditions
Ambient temperature: Annual average of 30°C
Load factor: 80% max.
Operation rate: 20 hours/day max.
Be sure to check user settings prior to operation because Yaskawa resets user constants to facto-
ry settings when shipping overhauled SERVOPACKS.
Frequency
Yearly Check for dust, dirt, and oil on
surfaces.
Yearly Check for loose terminal-block
and connector screws.
Yearly Check for discoloration, damage
or broken wires due to heat.
Part Standard Replacement
Period
4 to 5 years
7 to 8 years
—
10 years
5 years
12.1 Maintenance and Inspection of Servodrives
Procedure
Clean with a cloth or
compressed air.
Tighten any loose screws.
Contact your Yaskawa
representative.
Replacement Method
Replace with a new fan.
Test and replace with a new capaci-
tor if necessary.
Test and replace if necessary.
Replace with a new fuse.
Test and replace with a new circuit
board if necessary.
Remedy