User manual

Page 51
EA Elektro-Automatik GmbH
Helmholtzstr. 31-37 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
www.elektroautomatik.de
[e-mail]
EL 9000 T Series
3.10.4 Manual operation
3.10.4.1 Function selection and control
Via the touchscreen one of the functions described in 3.10.1 can be called up,
conguredandcontrolled.Selectionandcongurationareonlypossiblewhen
the input is switched off.
► How to select a function and adjust parameters
1. While the DC input is switched off, tap the touch area on
the main screen.
2. In the menu tap on “Page 2”, then “Function Generator” and there on the desired function.
3. Then you are requested to select to what physical value the function is going to be applied, or .
4. Adjust the parameters as you desire, like offset, amplitude and frequency for a sine wave, for example.
With all functions and also the arbitrary generator, if there is a difference between start
and end value of the curve and that difference is too low (min. ΔY/Δt), also depending
on the time that is dened for one function run, the function generator will not accept the
settings and pop up an error.
5. Do not forget to adjust the overall limits of voltage, current and power, which you can access with touch
area “NEXT”.
When entering function generator mode, those global limits are reset to safe values, which
might prevent the function from working at all. For example, if you apply the selected
function to the input current, then the overall current limit should not interfere and should
at least be as high as offset + amplitude.
Setting the various functions is described below. After setting it up, the function can be loaded.
► How to load a function
1. After setting the values for the required signal generation, tap on the
touch area .
The device will then load the data into the internal controller and change the
display. Shortly afterwards the static values are set (power and voltage or
current), the DC input is switched on and the touch area enabled.
Only then can the function be started.
The static values are applied to the DC input immediately after loading the function, because the
DC input is automatically switched on in order to settle the start situation. These static values
represent the effective value before start and after the end of the function, so that it doesn’t
need to start from 0. Only exception: when applying any function to the current (I), there is no
adjustable static current value, so the function would always start from 0 A.