User manual

41
User Manual
Interface cards IF-XX
EN
Date: 04-09-2012
About the interface cards
7.2 General
The interface IF-A1 is an analogue interface with galvani-
cally isolated, customisable, analogue and digital inputs and
outputs. Visualisation:
IF-A1
Netzgeräteseite
PSU side
Ein/Ausgänge
In/Out
Customisable means, that you can customise these inputs
and outputs to your needs, but always within a voltage ran-
ge of 0...10V. At devices with two extension card slots (eg.
PSI9000) it is possible to combine the IF-A1 with a digital
interface card (eg. IF-U1 (USB)), in order to control, for
example, the device by USB and put out actual values via
the analogue outputs of the analogue card. Or vice versa,
you control the device by analogue set values and read out
and log the actual values to a PC via RS232, CAN or USB.
It applies generally: all monitoring and surveillance features
are permanently active, even if two cards (one digital, one
analogue) are equipped. Only the control of the device with
set values requires the activation of the external mode (IF-A1)
resp. of the remote mode (digital interfaces), whereas the
remote mode has priority. In case the device is in control
by an analogue interface (external mode, indicated in the
display by
extern) and the control of the device via a digital
interface is activated, the device will switch to remote mode
(indicated in the display by remote).
7.3 Configuring the IF-A1
The interface is configured in the communication menu:
With
M
+ Communication + and
Slot {A|B}: IF-A1 +
the analogue interface card is selected for configuration.
Following parameters can be set:
7.3.1 Analogue inputs
Analogue set values are only accepted by the device if it is in
external mode (indicated in the display by
extern). Access
to the menu is blocked in external mode.
The analogue interface IF-A1 has three analogue inputs
with these functions:
AI1: PSEL (external set value for power)
AI3: CSEL (external set value for current)
AI2: VSEL (external set value for voltage)
The nominal voltage range of these inputs is 0...10V, but
it can be narrowed in order to adapt to the input signal. By
limitting the standard voltage range to a lower one the reso-
lution is also lowered. Example: if the voltage range is set to
only 1V difference, resolution and accuracy will be reduced
by the factor 10.
The left value defines the input voltage for 0% output value
(U, I, P), the right value the input voltage for 100% output
value. The menu differs a little between the various series:
7.3.1.1 PSI 9000 series
It applies:
U
min
(left value) = { 0.00V...4.00V }
U
max
(right value) = { 5.00V...10.00V }
A higher or lower voltage than specied is clipped and treated
as either 0% or 100%.
Menu items:
{Nom.value | Adj.limits} Default: Nom.value
= Nom.value the dened range for VSEL, CSEL and
PSEL is always related to the nominal
values of the device (see explanations
below)
= Adj.limits the range for VSEL, CSEL and PSEL
is always related to the adjustment
limits of the device (see explanations
below)