User manual

Page 43
EA Elektro-Automatik GmbH
Helmholtzstr. 31-33 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
www.elektroautomatik.de
[e-mail]
ELR/ELM 5000 Series
3.9 Other applications
3.9.1 Series connection
Series connection is not a permissible operating method for electronic loads and must not be
installed or operated under any circumstances!
3.9.2 Parallel operation
Multiple devices of same kind and model can be connected in parallel in order to create a system with higher total
current and hence higher power.
The ELM 5000 does not offer particular support for parallel operation. The user can, however, achieve good results
when setting up the single load modules correctly.
If the rack a mixed installation with 80 V and 200 V modules, make sure not to connect them
in parallel or connect the 80 V type with a source for 200 V, else the unit(s) will be damaged!
4. Servicing and maintenance
4.1 Maintenance / cleaning
The device needs no maintenance. Cleaning may be needed for the internal fans, the frequency of cleanse is
depending on the ambient conditions. The fans serve to cool the components which are heated by the inherent
minimal power loss. Heavily dirt lled fans can lead to insufcient airow and therefore the DC input would switch
off too early due to overheating or possibly lead to defects.
Cleaning the internal fans can be performed with a vacuum cleaner or similar. For this the device needs to be opened.
4.2 Fault nding / diagnosis / repair
If the equipment suddenly performs in an unexpected way, which indicates a fault, or it has an obvious defect, this
can not and must not be repaired by the user. Contact the supplier in case of suspicion and elicit the steps to be
taken.
It will then usually be necessary to return the device to Elektro-Automatik (with or without warranty). If a return for
checking or repair is to be carried out, ensure that:
• the supplier has been contacted and it is claried how and where the equipment should be sent.
• the device is in fully assembled state and in suitable transport packaging, ideally the original packaging.
• a fault description in as much detail as possible is attached.
• if shipping destination is abroad, the necessary customs papers are attached.
4.3 Firmware updates
Firmware updates should only be installed when they can eliminate existing bugs in the rm-
ware in the device or contain new features.
The rmware of the electronic load module, if necessary, is updated via the front side Ethernet port. For this the
software “EA Power Control” is needed which is included with the device on USB stick or available as download
from our website, together with the rmware update, or upon request.