Installation - TET Electronics ARGOS-1200 Instruction Manual

3. Installation

Before using the power supply ARGOS a power cord has to be plugged in to the AC input (TB1) of the
rear panel of the power supply. The power cord should at least support 7A load.
The ARGOS supply is immediately operational after powering up and a soft start time of approx. 3sec.
The warmup time, at room temperature, in order to reach the high stability specifications is negligible.
Note: The outputs of the power source should not be connected to A C-sources, DC-sources with
reverse polarity or Dcsources with higher voltage than 1.2 x U If such an operating mode is
nominal
inevitable (e.g. charging batteries, paralleling power sources or working with heavy inductive loads),
the customer must assure proper safety measures.
4. Constant voltage mode with current limiting
This mode of operation is reached when the LED indicator ''CV'' illuminates. Because of the high
stability of ARGOS it is possible to adjust accurately the output voltage to several decades. For this an
adequate digital voltmeter should be used. The local adjustment is performed using the voltage control
knob ''VOLTAGE''.
The adjustment to the desired and limited current is achieved by short-circuiting the output and using
the currentlimiting control knob while reading the display.
5. Constant current mode with voltage limiting
This mode of operation is reached when the LED indicator ''CC'' illuminates. The height of the
constant current is locally adjusted using the current control knob ''CURRENT''. The lower limit for the
constant current operation is ≤100mA.
It is important to be careful, particularly when working with small output currents, since the
charging or discharging currents of the output capacitor affects the constant current
depending on the charging condition of the output capacitor under dynamic loading condition.
The output voltage to be maximum limited is adjusted by using the voltage control knob and reading
the display.
6. Remote sensing
Unavoidable voltage drops across the output terminals and the load lines can be compensated by
including sensing leads in conjunction with the load. However it is important to make sure not to
exceed a voltage drop of 1V or 1% from rated Voltage 1) per load line.
Circuit configuration
1. Jumpers between +V and +S and between -V and -S (terminal TB2 on the rear panel) are opened
2. The load leads (+V,-V) are linked to the output terminals of the supply and the sensing leads to the
sensing terminals and then connected accordingly to the load.
NOTE
The +V, -V terminals at TB2 are not appropriate as power source !
When using the ARGOS power supply with interrupted sensing leads, the specified data can no longer
be fulfilled. However the power supplies are internally protected so that no damage will result even
with opened S-leads.
When using long sensing leads it is recommended to use shielded cables.
When proceeding with interrupted sensing leads the display will show approx. 2V or 2% from rated
Voltage 1) less than the actual output voltage. The current display gives always the true value.
1) whichever greater
Argos 1200
Page 7 von 16 ISSUE 07/05