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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
PSB 9000 3U Series
1.9.6 The control panel (HMI)
The HMI (Human Machine Interface) consists of a display with touchscreen, two rotary knobs, a pushbutton and
an USB-A port.
1.9.6.1 Touchscreen display
The graphic touchscreen display is divided into a number of areas. The complete display is touch sensitive and
can be operated by nger or stylus to control the equipment.
In normal operation the left hand side is used to show actual values and set values and the right hand side is used
to display status information:
Actual voltage display
Voltage set value input
Status area
Actual current display
Current set value input
Touch area for
rotary knob assignment
Actual power display
Power set value input
Indicator source/sink mode
Actual resistance display
Resistance set value input
Touch areas MENU
and SETTINGS
Touch areas may be enabled or disabled:
Black text or symbol = Enabled Grey text or symbol = Disabled
This applies to all touch areas on the main screen and all menu pages..
• Actual / set values area (left hand side)
In normal operation the actual values (large numbers) and set values (small numbers) for voltage, current and
power on the DC terminal are displayed. For the two operation modes as sink (displayed as EL) and source (dis-
played as PS) there are two separate set values each for current, power and resistance, as indicated is display.
The two resistance set values are only displayed while resistance mode is active. An actual resistance value is only
available during sink mode operation, thus it will be hidden when switching to source mode. The actual values of
current and power can be negative (signed) or positive. A negative value belongs to sink mode and indicates that
the device is work as electronic load.
When the DC terminal is switched on, the actual regulation mode, CV, CC, CP or CR is displayed next to the cor-
responding actual value, as shown in the gure above with CV as example.
The set values can be adjusted with the rotary knobs next to the display screen or can be entered directly via the
touchscreen. When adjusting with the knobs, pushing the knob will select the digit to be changed. Logically, the
values are increased by clockwise turning and decreased by anti-clockwise turning.
General display and setting ranges:
Display Unit Range Description
Actual voltage V 0-125% U
Nom
Actual value of the voltage on the DC terminal
Set value of voltage V 0-102% U
Nom
Set value for limiting the DC voltage
Actual current A 0.2-125% I
Nom
Actual value of the current on the DC terminal
Set values of current A 0-102% I
Nom
Set value for limiting the DC current
Actual power W, kW 0-125% P
Nom
Actual value of power according to P = U * I
Set values of power W, kW 0-102% P
Nom
Set value for limiting DC power
Set value of resistance Ω x
(1
-100% R
Max
Set value for the internal resistance
Adjustment limits ditto 0-102% nom U-max, I-min etc., related to the physical quantities
Protection settings ditto 0-110% nom OVP, OCP, OPP (related to U, I and P)
(1
Lower limit for resistance set value varies. See tables in section 1.8.3
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