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EPS Stromversorgung GmbH
Alter Postweg 101 • 86159 Augsburg
Germany
Fon: +49 821 / 570451-0
Fax: +49 821 / 570451-25
www.eps-germany.de
PSI 10000 4U Serie
• Remote control isn’t active
In this mode of operation pin REM-SB can serve as lock, preventing the DC output from being switched on by any
means. This results in following possible situations:
DC
output
+
Level on
pin
REM-SB
+
Parameter
„Analog
interface
Rem-SB“
Behavior
is off
+
HIGH
+
Normal
The DC output isn’t locked. It can be switched on by pushbutton
“On/Off” (front panel) or via command from digital interface.
LOW
+
Inverted
+
HIGH
+
Inverted
The DC output locked. It can’t be switched on by pushbutton “On/
Off” (front panel) or via command from digital interface. When trying
to switch on, a pop-up in the display resp. an error message will
be generated.
LOW
+
Normal
In case the DC output is already switched on, toggling the pin will switch the DC output off, similar to what it does
in analog remote control:
DC
output
+
Level on
pin
REM-SB
+
Parameter
„Analog
interface
Rem-SB“
Behavior
is on
+
HIGH
+
Normal
The DC output remains on, nothing is locked. It can be switched
on or off by pushbutton or digital command.
LOW
+
Inverted
+
HIGH
+
Inverted
The DC output 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 power supply can selectively work in current limiting or power
limiting mode. According to the specification of max. 5 mA 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 nec
-
essary to mind the input voltage range for set values (0...5 V or
0...10 V).
Use of the input voltage range 0...5 V for
0...100% set value halves the effective res
-
olution.
Example with external
voltage source
Example with
potentiometers
c) Reading actual values
The AI provides the actual values on the DC output as current and voltage monitor.
These can be read using a standard multimeter or an analog input of a PLC etc.
