6
6-8 | CFW-11M RB
Troubleshooting and Maintenance
6.5 PREVENTIVE MAINTENANCE
DANGER!
;
Always turn off the mains power supply before touching any electrical component associated to
the converter.
;
High voltage may still be present even after disconnecting the power supply.
;
To prevent electric shock, wait at least 10 minutes after turning off the input power for the complete
discharge of the power capacitors.
;
Always connect the equipment frame to the protective ground (PE). Use the adequate connection
terminal in the converter.
ATTENTION!
The electronic boards have electrostatic discharge sensitive components.
Do not touch the components or connectors directly. If needed, first touch the grounded mettalic
frame or wear a ground strap.
Do not perform any withstand voltage test!
If needed, consult WEG.
The converter require low maintenance when properly installed and operated. Table 6.3 presents main
procedures and time intervals for preventive maintenance. Table 6.4 provides recommended periodic
inspections to be performed every 6 months after converter start-up.
Table 6.3 -
Preventive maintenance
Maintenance
Interval
Instructions
Fan replacement
After 50000 operating hours.
(1)
Replacement procedure shown in Figure 6.2.
Keypad battery replacement
Every 10 years.
Refer to chapter 4.
Electrolytic
capacitors
If the converter is
stocked (not being
used):
“Reforming”
Every year from the manufacturing
date printed in the converter
identification label (refer to item
2.5).
Supply the UP11 (at the +UD and -UD terminal) with a voltage
250 to 350 Vdc, during 1 hour at least. Then, disconnect
the power supply and wait at least 24 hours before using the
converter (reapply power).
Converter is being
used: replace
Every 10 years.
Contact WEG technical support to obtain replacement
procedures.
Note:
(1)
The converter are factory set for automatic fan control (P0352=2), which means that they will be turned on only when the heatsink temperature exceeds
a reference value. Therefore, the operating hours of the fan will depend on the converter usage conditions (input current, cooling air temperature, etc.). The
converter stores the number of operating hours of the fan in parameter P0045. When this parameter reaches 50000 operating hours, the keypad display
will show alarm A177.
Содержание CFW-11M RB
Страница 9: ...1 4 CFW 11M RB 1 Safety Instructions...
Страница 21: ...2 2 12 CFW 11M RB General Instructions...
Страница 87: ...7 7 2 CFW 11M RB Accessories...