ERI Series

  • Features
  • Details
  • Type Overview


• Energy recycling to the local power grid
• Low heat waste - silent - lab operation
• CC - CV - CR - CP - CCV - CVC mode
• Ethernet + USB + RS-232 + CAN as standard
• GPIB optional
• SCPI Programming with measurement function
• Dynamic loads with synchronized DAQ
• Data storage directly to USB mass storage device
• Adjustable protections for voltage and current
• Electronic protection
• Digital input and programmable output
• Galvanically isolated fast I/O Port optional

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ERI Series Electronic Loads feed the consumed energy back to the local power grid.
Another feature of these devices is an extensive variety of standard data interfaces.
Apart from Ethernet, USB and RS-232 there is a standard CAN interface. GPIB can be installed as an option (ERI02).
Programming is done in SCPI with an extensive command syntax.


ERI loads recover the consumed energy instead of converting to thermal energy.
Thus, electricity costs are reduced and the environment is only slightly warmed. As a consequence, in many cases air-condition is unnecessary.
Energy recycling loads do not need powerful fans. That makes the devices acceptably quiet and therefore perfectly fit for laboratory operation.

Energy Recycling

The consumed energy is fed back to the mains supply with an efficiency of ca. 90 %.
The operation in the sense of a power generation into the public electricity grid is not provided with these energy recycling loads. The load must be connected to a low-voltage mains supply with a fixed installed and separately fused supply line.
The ERI load has a simple and non-redundant monitoring of the power supply. If limit values are exceeded, it switches off the power stage unit. This monitoring does not replace any grid or system protection which must be installed if necessary for the protection of persons and the local grid.


The units provide constant current, constant voltage, constant resistance and constant power mode.
In addition, protections for current and voltage can be set in any mode. 
A data acquisition function allows to store measurement data on an external USB flash drive.

Dynamic operation can be configured by up to 300 list point settings. The Electronic Load saves the synchronously acquired measurement values with timestamp.

A configurable trigger model controls data acquisition as well as static and dynamic settings.

Loading Capacity

The type spectrum contains 3 power classes from 3,600 W to 10,800 W and input voltages of 120 V, 400 V and 800 V.


 Current protection
 Power protection
 Overtemperature protection
 Protection of the GND lines at the I/O Port
 Simple mains supply monitoring

Data Interfaces

 GPIB (Option ERI02)

LabVIEW driver is certified by National Instruments.

Galvanically Isolated Fast I/O Port (Option ERI06)

Optional galvanically isolated I/O port to prevent ground loops, for following functions:

 Load setting C and V
 Analog setting of C and V protections
 Load on-off
 Voltage monitor output
 Current monitor output
 Trigger input
 Trigger output
 Digital input
 Programmable control

Factory Calibration Certificate (Option FCC-ERIxx)

A Factory Calibration Certificate (FCC) can be supplied with the devices. The FCC meets the requirements according to DIN EN ISO 9000ff. This calibration certificate documents the traceability to national standards to illustrate the physical device in accordance with the international System of Units (SI).
The recommended calibration interval is 2 years.


Each Electronic Load is supplied with a user manual as PDF file and printed General Safety Instructions, each in German and Englisch.

Type Overview