Ea Elektro Automatik EA Elektro-Automatik 06230319, 1 Output Variable DC Power Supply, , Bench 06230319 Hoja De Datos

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EA Elektro-Automatik GmbH

Helmholtzstr. 31-33 • 41747 Viersen

Germany

Fon: +49 2162 / 3785-0

Fax: +49 2162 / 16230

The built-in function generator is able to create various signal forms and apply these to set values for voltage or 

current.
In manual operation, all generator functions are available for access on the front panel. In remote control, only the 

customisable arbitrary generator and a XY function are available. The arbitrary generator can replicate all manually 

serviceable functions, except UI and IU. For those, the XY function is assigned.
The following functions are retrievable, configurable and controllable:

Sine wave

U, I

Sine wave generation with adjustable amplitude, offset and frequency

Triangle

U, I

Triangular wave signal generation with adjustable amplitude, offset, gain and decay times 

Rectangular U, I

Rectangular wave signal generation with adjustable amplitude, offset and duty cycle

Trapezoid

U, I

Trapezoidal wave signal generation with adjustable amplitude, offset, rise time, pulse 

time, fall time, idle time

DIN 40839

-

Simulated automobile engine start curve according to DIN 40839 / EN ISO 7637, split 

into 5 curve sequences, each with a start voltage, final voltage and time

Arbitrary

U, I

Generation of a process with up to 100 freely configurable steps, each with a start and 

end value (AC/DC), start and end frequency, phase angle and total duration

Ramp

U, I

Generation of a linear rise or fall ramp with start and end values and time before and 

after the ramp

UI-IU

-

Table (.csv) with values for U or I, uploaded from a USB flash drive, as well as func-

tions to simulate a solar panel (PV function) or fuel cells (FC function)

3.9.2.1  Limitations
The function generator is not accessible, neither for manual acces, nor for remote control, if
•

master-slave mode has been activated and the device was configured as slave.

•

resistance modes (R/I adjustment mode, also called UIR mode) is active.

3.9.2.2  Resolution of X (Time) and Y (Amplitude)
The device can set 3276 steps between 0 ... 100% of nominal value. The intervals to create a linear or other rise/

fall are calculated depending on the amplitude and then set.
If the amplitude is very low and the time long, only few intervals will be set as otherwise many identical values will 

be set one after another, generating a staircase effect.
3.9.2.3  Possible technical complications
Operation of switching mode power supplies as a voltage source can, when applying a function to the output volt-

age, lead to damage of the output capacitors due to continuous charging/discharging which causes overheating. 

Furthermore the actual voltage progression may differ from what’s expected.

In order to understand how the function generator works and how the value settings interact, the following should 

be noted: 
The device operates, including in function generator mode,always with the three set values U,I and P. 
The selected function can be used on one of both the values U or I, the other two are then constants and have 

a limiting effect. That means if, for example, a voltage of 10 V is set for the DC output, a load is connected and 

a sine wave function should operate on the current with an amplitude of 20 A and offset 20 A, then the function 

generator will create a sine wave progression of current between 0 A (min) and 40 A (max), which will result in an 

output power between 0 W (min) and 400 W (max).The output power, however, is limited to its set value. If this 

was 300 W then, in this case, the current would be limited to 30 A and, if clamped to an oscilloscope, it could be 

seen as capped at 30 A and never achieve the target of 40 A.