Manual

Table Of Contents

1.9 Construction and function

1.9 .1 General description

The devices of series ELR 10000 2U are energy recovering, switching electronic loads. The recovery or recuperation feature

inverts the consumed DC energy with an eciency of up to 95% and feeds it back into the local mains.

Apart from basic functions of electronic loads, set point curves can be generated by the integrated function generator (sine,

rectangular, triangular and other curve types). Arbitrary generator curves (up to 99 points) can be saved to and loaded from

an USB stick. For industrial component testing, the devices furthermore offer a battery test and an MPP tracking function

for solar module tests.

For remote control the devices are provided as standard with USB and Ethernet ports on the rear side, as well as a galvani-

cally isolated analog interface. Via optional plug-in interface modules, another digital interface such as for RS232, Probus,

ProNet, ModBus TCP, CAN, CANopen or EtherCAT can be added. These enable the devices to be connected to standard

industrial buses simply by changing or adding a small module. The conguration, if necessary at all, is simple.

In addition, the devices offer as standard the possibility for parallel connection in so-called Share bus operation for constant

current sharing, plus a true master-slave connection with totaling of all actual values is also provided as standard. Operating

in this way allows for up to 64 units to be combined to a single system with a total power of up to 192 kW.

1.9.2 Block diagram

The block diagram illustrates the main components inside the device and their relationships.

There are digital, microprocessor controlled components (KE, DR, HMI), which can be target of rmware updates.

Controller

(DR)

Commu-

nication

(KE)

HMI

MS USBUSB

Ana

log

Sha re &

Sense

Block diagram

≈

Commu-

nication

(KE)

Power block

Any

bus

ETH

ELR 10000