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PS 9000 1U Series
3.4.3.7 Menu “HMI Setup”
These settings refer exclusively to the control panel (HMI) and the display. The table lists all available settings for
the HMI, no matter in which submenu they can be found.
Element
Description
Language
Selection of the display language between “Deutsch” and “English”
Brightness
The brightness, i.e. background illumination of the display can be adjusted here. Range is 1...10,
default is 10.
View mode
The display mode of actual and set values can be switched here. Refer to
for details
Key Sound
Activates or deactivates sounds when pushing a button on the HMI. It can usefully signal that
the action has been accepted.
Alarm Sound
Activates or deactivates the additional acoustic signal of an alarm. See also
HMI Lock
„3.7. Control panel (HMI) lock“
for details
3.4.4 Adjustment limits
By default, all set values (U, I, P) are freely adjustable from 0 to 100%.
This may be obstructive in some cases, especially for protection of
applications against overcurrent. Therefore upper and lower limits for
current and voltage can be set which limit the range of the adjustable
set values. For power only an upper value limit can be set.
These limits apply to every kind setting a value. That also includes remote control via analog or digital interface.
In remote control, the global range of 0...100% (digital) resp. 0...5 V / 0...10 V remains, only narrowed by the limits
defined here.
An example: you would define the limits for a model with 80 V, 120 A and 3 kW as depicted in the screen above,
with U-min = 10V and U-max = 75 V. In analog remote control, the active control voltage range for mode 0...10 V
results as 1.25 V...9.375 V. As soon as the device is switched to analog remote control, it would put out minimum
10V, even there is nothing connected to voltage control input VSEL.
Beyond those limits, values given by digital commands are not accepted and will return an error (when using SCPI).
Values given from analog control voltages are ignored (clipping).
► How to configure the adjustment limits
1.
Switch off the DC output and push button
to call the setup menu.
2.
Push button
to call submenu “
Settings
”. In the submenu navigate to “
Limits”
and push
again.
3.
In the screen you can now adjust the settings I-min, I-max, U-min, U-max and P-max with the rotary knobs.
Switching between values for current and power is done with the arrow buttons
and
.
4.
Accept the settings with
or discard them with
.
The adjustment limits are coupled to the set values. It means, that the upper limit (-max) may
not be set lower than the corresponding set value. Example: If you wish to set the limit for the
current set value I-max to 90 A while the currently adjusted current set value is 100 A, then the
set value first would have to be reduced to 90 A or less.
The same applies vice versa when adjusting I-min.
