Page 60
Intepro Systems
www.inteproate.com
PS 9000 3U Series
• 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
DC output not locked. It can be switched on by pushbutton “On/Off”
(front panel) or via command from digital interface.
LOW
+
Inverted
+
HIGH
+
Inverted
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
DC output remains on, nothing is locked. It can be switched on or
off by pushbutton or digital command.
LOW
+
Inverted
+
HIGH
+
Inverted
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 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 limit-
ing mode. According to the specification of max. 5 mA for the VREF
output, potentiometers of at least 10 kΩ must be used.
The voltage set value VSEL is permanently assigned to VREF and
will thus be permanently 100%.
If the control voltage is fed in from an external source it is 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
Via the AI the output values for current and voltage can be monitored. These can be
read using a standard multimeter or similar.