User Manual

Page 45
EA Elektro-Automatik GmbH
Helmholtzstr. 31-33 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
www.elektroautomatik.de
[e-mail]
PS 9000 2U Series
3.3.3.8 Menu “HMI settings”
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.
Panel Contrast The contrast of the display can be adjusted here. Range is 0...100, default is 70.
Status Page Setup The display mode of actual and set values can be switched here. Refer to „3.3.5. Display
modes for actual and set values“ 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 „3.5. Alarms
and monitoring“.
HMI Lock Activates the HMI lock. See „3.6. Control panel (HMI) lock“ for details
3.3.4 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
denedhere.
Anexample:youwoulddene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. In analog remote control, the active control voltage range for mode 0...10 Vre-
sults 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 congure 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 “Limit Settings” 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 100 A while the currently adjusted current set value is 120 A, then
the set value rst would have to be reduced to 100 A or less.
The same applies vice versa when adjusting I-min.