User manual

44
User Manual
Interface cards IF-XX
EN
Date: 04-09-2012
About the interface cards
Jumper settings for DI1-2
The jumpers DI1-3 on the PCB are used to preset the phy-
sical behaviour of these inputs. The selector „Default level“
defines the default logical level of the corresponding input.
That means, if the default logical level is set to High, the input
has to be pulled actively to Low by an external application
(eg. relay) in order to change its logical level. The default
logical level requires attention, since it defines the behaviour
of the power supply by the control signals SEL_enable and
Rem-SB.
Default level defines the logical level of the input if not wired.
High range selects the high input voltage range for the
input. A „high“ corresponds to a voltage of >9V and a „low“
to a voltage of <5V.
Low range selects the low input voltage range for the input.
A „high“ corresponds to a voltage of >4V and a „low“ to a
voltage of <1V.
Examples: the input DI2/Rem-SB, which is used to switch
the power output on and off (standby), can be activated with
LOW or HIGH, depending on what has been configured in
the setup. In order to exclusively control the device output
by this input, it is recommend to choose setting Set output
= exclusive ON.
Example 1: the input shall be pulled to GND by a relay (maker
contact) and switch the power output off. Hence you need to
configure the jumper for DI2 to „Default level = H“ and use the
settings Standby = LOW and Set output = enable ON. The
output of the power supply can then be switched by the relay.
Example 2: the output shall be shut off by an emergency
circuit. The jumper for DI2 needs to be set to „Default level
=L“ and the setting Standby = HIGH. This example uses a
relay with make contact to Vcc.
There are, of course, other possible solutions.
7.3.4 Digital outputs with determined functionality
The digital outputs DO1, DO4, DO5 and DO6 can not be
user-defined in their functionality, but they can invert the
logical output level.
DO1/CV Default: LOW
= { LOW | HIGH }
If LOW has been selected, the output is pulled to GND as
soon as the regulation mode of the power supply is determi-
ned by the set value of voltage (CV operation). If HIGH has
been selected, the output is pulled to 12...15V.
DO4/Mains OK Default: LOW
= { LOW | HIGH }
If LOW has been selected, the output is pulled to GND as long
as the mains voltage is present. If HIGH has been selected,
the output is pulled to 12...15V.
DO5/Standby Default: LOW
= { LOW | HIGH }
If LOW has been selected, the output is pulled to GND if the
power output of the device is off (standby). If HIGH has been
selected, the output is pulled to 12...15V.