14
Service
Procedure when maintenance has been neglected
Manual – EtherCAT
®
Interfaces, Field Distributors
119
14.6
Procedure when maintenance has been neglected
Electrolytic capacitors are used in the inverters. They are subject to aging effects
when de-energized. This effect can damage the capacitors if the unit is connected us-
ing the nominal voltage after a longer period of storage.
If you have not performed maintenance regularly, SEW‑EURODRIVE recommends
that you increase the line voltage slowly up to the maximum voltage. This can be
done, for example, by using a variable transformer for which the output voltage has
been set according to the following overview. After you have completed the regenera-
tion process, the unit can be used immediately or stored again for an extended period
with maintenance.
The following stages are recommended:
AC 400/500 V units:
•
Step 1: AC 0 V to AC 350 V within a few seconds
•
Step 2: AC 350 V for 15 minutes
•
Step 3: AC 420 V for 15 minutes
•
Step 4: AC 500 V for 1 hour
14.7
Disposal
This product consists of:
•
Iron
•
Aluminum
•
Copper
•
Plastics
•
Electronic components
Dispose of all components in accordance with applicable regulations!
25809148/EN – 01/2019