User manual

42
User Manual
Interface cards IF-XX
EN
Date: 04-09-2012
AI1 Default: PSEL 0.00 10.00V
= {PSEL|RSEL|-} Pin assigned to external set value for
power or resistance or not used
RSEL is only available if U/I/R mode is unlocked.
If AI1 is set to „-“, then no power set value is required. The
output power will then be held at the last adjusted value.
AI2 Default: 0.00 10.00V
= VSEL external set value for voltage
AI3 Default: 0.00 10.00V
= CSEL external set value for current
Explanation about Nom.value
With this setting, the input voltage range of the three set
values inputs is related to the corresponding nominal values
(U, I or P) of the device.
Example: you have a PSI 9080-100 which has nominal
values of 80V, 100A and 3000W. If you adjust the analogue
input VSEL to 0...10V for 0...100%, the device will put out
100% or 80V if the input is fed a voltage of 10V. In case the
range is set to 3...7V, the 100% or 80V output voltage is
already achieved when feeding 7V input. The same applies
for the other set value inputs.
Note
The maximum output voltage, current and power can
additionally be limited by adjustment limits. See the user
instruction manual of your device, menu item „Prole ->
General settings -> Adjust limits“ for further details.
Explanation about Adj.limits
With this setting, the input voltage range of the three set
values inputs is related to the so-called „adjust limits“ (U, I
or P) which can be defined in the user profile of the device.
Example: you have a PSI 9080-100 which has nominal va-
lues of 80V, 100A and 3000W. The output current is set to
50A in the „Adjust limits“ menu of the device profil in order
to prevent the device from ever putting out more than 50
amps. If you then adjust all three analogue inputs to 0...5V
for 0...100%, the device will put out 100% or 80V output
voltage at 8V input on VSEL, 100% or 3000W power at 8V
input on PSEL, but only 50A when you supply 8V on CSEL
input. At 4V on CSEL it will put out max. 25A.
7.3.1.2 PSI 8000 series
Note
PSI 8000 series models of type T, DT, 2U or 3U feature a
built-in analogue interface. In the menu there is an item
„Analogue interface“, which is NOT related to the pluggable
interface card IF-A1 that is described here!
It applies:
U
min
(left value) = { 0.00V...4.00V }
U
max
(right value) = { 5.00V...10.00V }
About the interface cards
The adjusted voltage range, for example 2.00V...8.00V,
corresponds to 0...100% set value. A higher or lower vol-
tage is clipped and treated as either 0% or 100%. Also see
„Explanation about Nom.value“ above, because PSI 8000
series incorporate the behaviour described in that section.
Menu items:
AI1 Default: PSEL 0.00 10.00V
= PSEL external set value for power
AI2 Default: 0.00 10.00V
= VSEL external set value for voltage
AI3 Default: 0.00 10.00V
= CSEL external set value for current
Note
The maximum output voltage, current and power can
additionally be limited by adjustment limits. See the user
instruction manual of your device, menu item „Prole ->
General settings -> Adjust limits“ for further details.
7.3.2 Analogue outputs
The actual values of output voltage, current and power are
led out to three analogue outputs. The output voltage of
them can be adapted to custom requirements. The first value
stands for U
min
(minimum output voltage, 0%), the second for
U
max
(maximum output voltage, 100%). It applies:
U
min
= {0.00V...4.00V}
U
max
= {5.00V...10.00V}
By limitting the standard voltage range of 0...10V to a lower
value the resolution is also lowered. Example: if the voltage
range is set to 1V difference between U
max
and U
min
, resolution
and accuracy will be reduced by the factor 10.
The reference voltage is an exception. It can be set to a
value between 1V and 10V.
AO0 Default: 10.00V
= VREF Adjustable reference voltage in a range of
{1V...10V}.
AO1 Default: 0.00V 10.00V
= VMON Monitor (actual value) output voltage
AO2 Default: 0.00V 10.00V
= CMON Monitor (actual value) output current