1 DC1 device series
1.12 Charging the internal DC link capacitors
DC1 Variable Frequency Drive 04/16 MN04020003Z-EN www.eaton.com 33
1.12 Charging the internal DC link capacitors
After extended
 
storage times or
 
extended downtimes during which no 
power is supplied (> 12 months), the capacitors in the internal DC link must 
be recharged in a controlled manner in order to prevent damage.
To do this, the DC1 variable frequency drive must be supplied with power, 
with a controlled DC power supply unit, via two mains connection terminals 
(e.g. L1 and L2).
In order to prevent the capacitors from having excessively high leakage 
currents, the inrush current should be limited to approximately 300 to 
800 mA (depending on the relevant rating). The variable frequency drive 
must not be enabled during this time (i.e. no start signal). After this, the 
DC voltage must be set to the magnitudes for the corresponding DC link 
voltage (U
DC
 1.41 x U
e
) and applied for one hour at least (regeneration 
time).
• DC1-12…, DC1-32…: about 324 V DC at U
e
 = 230 V AC
• DC1-34…: about 560 V DC at U
e
 = 400 V AC
1.13 Service and warranty
In the unlikely event that you have a problem with your DC1 variable 
frequency drive, please contact your local sales office.
When you call, have the following data ready:
• The
 
exact
 
variable frequency drive part number
 
(see nameplate),
• the date of purchase,
• a detailed description of the problem which has occurred with the 
variable frequency drive.
If some of the information printed on the rating plate is not legible, please 
state only the data which are clearly legible.
Information concerning the guarantee can be found in the Terms and 
Conditions Eaton Industries GmbH.
Break-Down Service
Please contact your local office:
http://www.eaton.eu/aftersales
or
Hotline After Sales Service
+49 (0) 180 5 223822 (de, en)
AfterSalesEGBonn@eaton.com
→
Due to the internal voltage doubler circuit, the capacitors in 
DC1-1D… variable frequency drives cannot be reformed using 
the connection terminals!
Please contact your local sales office.