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Handling the device
Rotary encoder Setting (6)
This rotary encoder has no end stop. With every
position Setting (6) changes the set value resp.
the parameter (in the setup menu) which was
chosen before by Selection (5).
It applies: the faster the encoder is rotated, the
faster the set value is increased or decreased (the step width
changes). Slow rotation hence changes the set value in small
steps, while fast rotation changes it in big steps.
In case the upper or lower limit of the set value is reached
while rotating, the set value will remain at its limit until it
changed again by rotating the encoder in the opposite di-
rection.
6.3
Switching power on
The device is powered by switching the mains switch. After
powering the device up type and firmware version are shown
on the display.
After the internal system has booted and performed some
tests, default set values are set. The load's DC input will
always be offline after the first start.
New since firmware 3.01: if the setting
is set to yes, then the most recent set values are restored
when switching the unit on.
6.4
Switching the DC input on/off
By pressing the pushbutton Input on/off (4) the DC input of
the load input is switched on and the device starts to work
as a load.
Pressing the button again switches the input off.
The input can also be switched off with the pin named „REM-
SB" on the analogue interface (pin = low), if it was on before.
Switching the input on if it was off before is not possible.
While the load is working, all four actual values of current,
voltage, power and resistance are indicated on the left half
of display.
When the load input is off, only the actual value of voltage
is indicated, because there are no reasonable other actual
values available at this moment. In battery test mode, the
time counter is also halted resp. continued if the pushbutton
is pressed.
The activation of the load operation can be inhibited by
certain reasons. For example, if an overvoltage or another
error is persistent or the load is remotely controlled by the
analogue or digital interface (interface card).
The standby state (input = off) is displayed like this:
Figure 8
© 2008, Elektro-Automatik GmbH & Co. KG
6.5
Note: Set values, which must not be changed in the currently
selected regulation mode, are not shown and can not be
selected/changed.
Set values can be selected and adjusted as long as the
display does not show the status texts
Remote
a) Selecting the set value to adjust
In the operation modes A, B, A/B and Battery the set value
to change is selected by rotating Selection (5).
In the setup menu (position Setup) it is used to select a
different setup parameter. Also see „7.1 The setup menu".
b) Adjusting the set value
The previously with Selection (5) selected set value is
changed with Setting (6). It applies: the faster the encoder
is rotated, the faster the set value is increased or decreased
(the step width changes). Slow rotation hence changes the
set value in small steps, while fast rotation changes it in big
steps.
In case the upper or lower limit of the set value is reached
while rotating, the set value will remain at its limit until it
Keep set values
changed again by rotating the encoder in the opposite di-
rection.
Important! Note, that in Level A/B mode any set value of
Level A must always be greater than or equal to Level B!
The result of this is, that Level B can upwards only be
adjusted to the value of Level A and Level A can down-
wards only be adjusted to the value of Level B.
6.6
The selector Mode (2) preselects the regulation mode which
determines the internal regulation characteristic. Four regu-
lation modes are available: CC, CV, CP and CR.
CC
current and power adjustable. In this mode the input current
is regulated and limited to the adjusted value (current limitati-
on), as far as the feeding source is able to deliver the current.
The set value of power is additionally limitting the consumed
power and additionally effects the maximum current. The
power limitation is dominant over the current limitation
The manual changeover to regulation mode CC can reset
the set value of power to its nominal value and the set value
of current to 0, if the parameter
set to
values are kept. Also see „7.1 The setup menu".
Adjusting the set values
mode.
Preselecting the regulation mode
means constant current. Here are the set values of
no
in the setup. If set to yes, the least adjusted set
EN
External mode
or
Keep set values
has been
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