Ea Elektro Automatik EA Elektro-Automatik EA-ELR 9750-44 3U Electronic Load 0 - 44 A 0 - 750 Vdc 0 - 7000 W 33200408 Ficha De Dados

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EA Elektro-Automatik GmbH

Helmholtzstr. 31-33 • 41747 Viersen

Germany

Fon: +49 2162 / 3785-0

Fax: +49 2162 / 16230

Switch off all units that are to be connected and connect them together with a network cable (CAT3 or bet-

ter, not included). It doesn’t matter which of the two master-slave connection sockets (RJ45, backside) is 

connected to the next unit.

Also connect all units at the DC side. See example scheme to the right.

The two units at the beginning and end of the chain should be terminated, if long connection cables are 

used. This is achieved using a 3-pole DIP switch which is positioned on the back side of the unit next to the 

MS connectors.

Position: not terminated (default)

Now the master-slave system must be configured on each unit. It is recommended to configure first all the slave 

units and then the master unit.

Enter 

 then GENERAL SETTINGS and press 

 until reaching PAGE 8.

Activate the MS mode with touch area 

. A warning requester will appear which has to be ac-

knowledged with OK, otherwise the change will be reverted.

Set the address of the slave between 1 and 15 with the left-hand rotary knob. Ensure that no address is 
allocated twice.

Accept the settings with the touch area 

 and return to the main page. 

The slave is then configured for master-slave. Repeat the procedure for all other slave units.

Enter 

 then GENERAL SETTINGS and press 

 until reaching PAGE 8.

Specify the unit as master with tough area 

. A warning requester will appear which has to be 

acknowledged with OK, otherwise the change will be reverted.

Accept the settings with the touch area 

 and return to the main page. 

► Step 3: Initialising the master
The master unit and the whole master-slave system still need to be initialised. In the main screen of the master 
unit, after quitting the setting menus, a pop-up will appear:

Tapping INITIALIZE will cause the unit to search again for slaves and then to 

configure itself for set and actual values accordingly. If more than one correctly 

configured unit is found then this screen will show the number of slaves and 

the combined total current and total power.
If no slaves are found, or the correct number is not displayed, then the settings 

of all the slaves and the master together with the cabling must be checked 

and setup process repeated.