Ea Elektro Automatik EA Elektro-Automatik EA-ELR 9250-140 3U Electronic Load 0 - 140 A 0 - 250 Vdc 0 - 7000 W 33200406 データシート

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EA Elektro-Automatik GmbH

Helmholtzstr. 31-33 • 41747 Viersen

Germany

Fon: +49 2162 / 3785-0

Fax: +49 2162 / 16230

The control panel (HMI) can be updated via the front or back USB ports, whereby the back USB port requires a 

PC with suitable software and the front USB needs only a FAT32 formatted USB stick with the update file. Hence 

the latter option is much simpler.

If not already available, obtain a USB flash drive (capacity up to 32GB) and ensure that it is formatted as 

FAT32.

Create a folder with the name HMI_FILES (case sensitive!) in the root directory of the flash drive and copy 

the firmware update file to this folder. The file name must follow the begin with “update_hmi” (example: 

update_hmi_v100.bin) or with a number (example: 96230058_FW-BE1_V201.bin).

Tap the touch area 

, then HMI SETTINGS, then HMI UPDATE and confirm the security question 

with ENTER. The HMI will then read and list the contents of the HMI_FILES folder.

Select and tick the update file to be used and tap the touch area LOAD FROM USB. The control panel will 

then be updated.

Switch the equipment off, wait until it is completely off (fan not running anymore), then switch back on.

The firmware of the device, if necessary, is updated via the rear side USB port. For this a software, a so-called 

“update tool” is needed which is available from EA Elektro-Automatik (as download from the website or upon re-

quest), together with the firmware update. The update tool guides the user through the update process.
In case the update tool is not available, or if the update somehow went wrong and the device will not work correctly, 

there is an alternative procedure. Required tools: 1x Sub-D plug 15-pole, some wire, solder iron, update file (*.bin).

Power off device. If not already available, prepare the 15 pole D-Sub plug like this (figure shows backside):

Bridge between pin 5 and 6
Bridge between pin 13 and 14

Plug the Sub-D onto the analog interface socket and connect the (included) USB-B cable between the USB 

port on the rear and the PC. Switch device on by mains switch.

The PC should mount a new removable drive named “UPDATE”, for example with driver lett G:. If not, wait 

some time and repeat steps 1 and 2.

Open that new drive in a suitable software, like Windows Explorer. It should contain one file “firmware.bin”. 

Delete the file.

Copy the new firmware file, which always has to be with extension *.bin, to that drive. Wait for the copy 

procedure to finish.

Switch the device off and remove the Sub-D plug from the analog interface socket.

Restart the device by switching it on - the display shows some information during the startup process, 

amongst them the new device firmware version as for example “KE: 2.09”.

The firmware update is finished then.