Elektro-Automatik PSI 9000 DT Series, Руководство по эксплуатации

Страница: 70 / 76

Page 70
EA Elektro-Automatik GmbH
Helmholtzstr. 31-37 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
www.elektroautomatik.de
ea1974@elektroautomatik.de
PSI 9000 DT Series
► How to save a sequence point table to an USB stick:
1.
Do not plug the USB stick yet or remove it again.
2.
Access the function selection menu of the function generator via MENU -> Function Generator -> Arbitrary
-> U/I.
3.
Tap on , then . The device will request you to plug the USB stick now.
4.
After plugging it, the device will try to access the stick, then to find the folder HMI_FILES and read the con -
tent. If there are already WAVE_U or WAVE_I files present, they will be listed and you can either select one
for overwriting with , otherwise select .
5.
Finally save the table with .
3.10.11 Ramp Function
The following parameters can be configured for a ramp function.
Value Range Description
Ustart / Istart 0...Nominal value of U, I Start value (U,I)
Uend / Iend 0...Nominal value of U, I End value (U, I)
t1 0.1 ms...36000 s Time before ramp-up or ramp-down of the signal.
t2 0.1 ms...36000 s Ramp-up or ramp-down time
Schematic diagram: Application and result:
U
(I)
sta
rt
t
U,I
t1 t2
U
(I)
End
This function generates a rising or falling ramp between start
and end values over the time t2. Time t1 creates a delay before
the ramp start.
The function runs once and stops at the end value.
Important to consider are the static values of U or I which define
the start levels at the beginning of the ramp. It’s recommended
that these values are set equal to those set for Ustart/Istart, un-
less the load at the DC output shall not be provided with voltage
before the start of the ramp. In that case the static value should
be set to zero.
10 h after reaching the end of the ramp the
function will stop automatically with either I
= 0 A or U = 0 V, unless it has been stopped
differently before.
3.10.12 Remote control of the function generator
The function generator can be remotely controlled, but configuration and control of the functions with individual
commands is different from manual operation. The external documentation “Programming Guide ModBus & SCPI”
explains the approach. In general the following apply:
•
The function generator isn’t directly controllable via the analog interface; the only impact to the function run can
come from pin REM-SB switching the DC output off, which will pause the function, so it could continued later
on with pin REM-SB switching the DC output on again and in case the function hasn’t been stopped otherwise.
• The function generator is unavailable as long as R mode (resistance) is activated