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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
EL 9000 B 15U/24U Series
In case the DC input is already switched on, toggling the pin will switch the DC input off, similar to what it does in
analog remote control:
DC
input
+
Level on
pin
REM-SB
+
Parameter
„Analog
interface
Rem-SB“
Behavior
is on
+
HIGH
+
Normal
The DC input remains on, nothing is locked. It can be switched on
or off by pushbutton or digital command.
LOW
+
Inverted
+
HIGH
+
Inverted
The DC input will be switched off and locked. Later it can be
switched on again by toggling the pin. During lock, pushbutton or
digital command can delete the request to switch on by pin.
LOW
+
Normal
b) Remote control of current and power
Requires remote control to be activated (Pin REMOTE = LOW)
The set values PSEL and CSEL are generated from, for example,
the reference voltage VREF, using potentiometers for each. Hence
the device can selectively work in current limiting or power limiting
mode. According to the specification of max. 5 mA of load for the
VREF output, potentiometers of at least 10 kΩ must be used.
The voltage set value VSEL is directly connected to VREF and will
thus be permanently 100%.
If the control voltage is fed in from an external source it’s necessary to
consider the input voltage ranges for set values (0...5 V oder 0...10 V).
Use of the input voltage range 0...5 V for 0...100%
set value halves the effective resolution.
Example with external
voltage source
Example with
potentiometers
c) Reading actual values
The AI provides the DC input values as current and voltage monitor. These can be read
using a standard multimeter or similar, as well as electronic data acquisition hardware.
