User manual

Page 17
EA Elektro-Automatik GmbH
Helmholtzstr. 31-37 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
www.elektroautomatik.de
[e-mail]
EL 3000 B Series
1.9.5 The control panel (HMI)
The HMI (Human Machine Interface) consists of a display, two rotary knobs and six pushbuttons.
1.9.5.1 Display
Thegraphicdisplayisdividedintoanumberofareas.Innormaloperationtheupperpart(⅔)isusedtoshowactual
andsetvaluesandthelowerpart(⅓)todisplaystatusinformation:
Actualvoltage+setvalue
Regulation mode CV
Actualcurrent+setvalue
Regulation mode CC
Actualpower+
set value
Regulation
mode CP
Actual resist-
ance+setvalue
Regulation
mode CR
Various status displays (symbols, strings)
• Actual / set values area (blue / green / red / orange)
In normal operation the DC input values (large numbers) and set values (small numbers) for voltage, current, power
and resistance are displayed. The resistance set value is, however, only displayed if resistance mode is activated.
While the DC input is switched on, the actual regulation mode CV, CC, CP or CR is displayed above to the cor-
respondingsetvalue,asshowninthegureabovewithexample“CR”.
The set values can be adjusted by rotating the knobs below the display, whereas pushing the knobs is used to
select the digit to be changed. Logically, the values are increased by clockwise turning and decreased by anti-
clockwise turning. The current assignment of set a value to a knob is indicated by the corresponding set value
being displayed in inverted form and also by the knob depiction in the status area showing the physical sign (U,
I,P, R). In case these are not shown, the values cannot be adjusted manually, like in HMI lock or remote control.
General display and setting ranges:
Display Unit Range Description
Actual voltage V 0-125% U
Nom
Actual value of DC input voltage
Set value of voltage
(1
V 0-102% U
Nom
Set value for limiting the DC input voltage
Actual current A 0.2-125% I
Nom
Actual value of DC input current
Set value of current
(1
A 0-102% I
Nom
Set value for limiting the DC input current
Actual power W 0-125% P
Peak
Calculated actual value of input power, P = U
IN
* I
IN
Set value of power
(1
W 0-102% P
Peak
Set value for limiting DC input power
Actual resistance Ω 0...99.999Ω Calculated actual internal resistance, R = U
IN
/ I
IN
Set value of resistance
(1
Ω x
(2
-102% R
Max
Set value for the desired internal resistance
Adjustment limits 1 A,V,W 0-102% nom U-max, I-min etc., related to the physical values
Adjustment limits 2 Ω x
(2
-102% nom R-max
Protection settings 1 A,W 0-110% nom OCP and OPP, related to the physical values
Protection settings 2 V 0-103% U
Nom
OVP, related to the physical values
(1
Valid also for values related to these physical values, such as OVD for voltage and UCD for current
(2
Theminimumadjustableresistancesetvaluevariesdependingonthemodel.Seetechnicalspecicationsin1.8.3