Ea Elektro Automatik EA Elektro-Automatik EA-ELR 9750-44 3U Electronic Load 0 - 44 A 0 - 750 Vdc 0 - 7000 W 33200408 Scheda Tecnica

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EA Elektro-Automatik GmbH

Helmholtzstr. 31-33 • 41747 Viersen

Germany

Fon: +49 2162 / 3785-0

Fax: +49 2162 / 16230

The 15 pole connector (Type: Sub-D, D-Sub) on the rear side is an analog interface. To connect this to a control-

ling hardware (PC, electronic circuit), a standard plug is necessary (not included in the scope of delivery). It is 

generally advisable to switch the device completely off before connecting or disconnecting this connector, but at 

least the DC input.

In order to remotely control the device via this port, connect the device with a PC using the included USB cable 

and switch the device on.
2.3.11.1  Driver installation (Windows)
On the initial connection with a PC the operating system will identify the device as new hardware and will install 

the driver. The driver is a Communications Device Class (CDC) type and is usually integrated in current operating 

systems such as Windows 7 or XP and is therefore not provided additionally. There are, however, versions such 

as Windows 7 Embedded in which the class of driver is not installed or does not function.
On the included CD is a driver information file (*.inf) which can install the device as a virtual COM port (VCOM).
Following recognition, the USB equipment will first be listed in the Windows Device Manager as “other hardware” 

(Windows 7) and the driver may possibly not be fully installed. In this case take the following steps:
In Device Manager click with right mouse button on the not fully installed hardware. Select “Update driver”
1.  Windows will ask if the driver should be automatically searched or whether it should be located and installed 

manually. Select the latter (second choice in the dialogue window).

2.  In the next dialogue window the driver source path will be determined. Click on “Search” and enter the folder 

of the USB driver from the “Drivers & Tools” CD or the path to the downloaded and unpacked driver. Allow 

Windows to install the driver. A message that the driver is not digitally signed can be submitted with “Ignore”.

2.3.11.2  Driver installation (Linux, MacOS)
We cannot provide drivers or installation instructions for these operating systems. Whether a suitable driver is 

available is best carried out by searching the Internet.
2.3.11.3  Alternative drivers
In case the CDC drivers described above are not available on your system, or for some reason do not function 

correctly, commercial suppliers can help. Search the Internet for suppliers using the keywords “cdc driver windows“ 

or “cdc driver linux“ or “cdc driver macos“.

For the first start-up after purchasing and installing the device, the following procedures have to be executed:
•

Confirm that the connection cables to be used are of a satisfactory cross section!

•

Check if the factory settings of set values, safety and monitoring functions and communication are suitable for 

your intended application of the device and adjust them if required, as described in the manual!

•

In case of remote control via PC, read the additional documentation for interfaces and software!

•

In case of remote control via the analog interface, read the section in this manual concerning analog interfaces!

In case of a firmware update, return of the equipment following repair or a location or configuration change, similar 

measures should be taken to those of initial start up. Refer to „2.3.12. Initial commission“.
Only after successful checking of the device as listed may it be operated as usual.