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EA Elektro-Automatik GmbH
Helmholtzstr. 31-37 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
www.elektroautomatik.de
ea1974@elektroautomatik.de
PS 2000 B Triple Series
3.2.2 Current regulation / constant current / current limitation
Current regulation is also known as current limiting or constant current mode (CC).
The DC output current is held constant by the power supply, once the output current to the load reaches the adjusted
limit.ThenthepowersupplyautomaticallyswitchesThecurrentowingfromthepowersupplyisdeterminedby
the output voltage and the load’s true resistance. As long as the output current is lower than the adjusted current
limit, the device will be in constant voltage mode. If, however, the actual current reaches the set value of current
the device will switch automatically to current limiting.
While the DC output is switched on and constant current mode is active, then the condition “CC mode active” will be
indicated on the display by the abbreviation CC and also stored as status which can be read via the digital interface.
3.2.3 Power limitation
Devices of this series don’t feature a power regulation, only a power limitation. In order to prevent the device from
supplying more than the rated power, the set values of voltage and current limit each other.
It means, when adjusting the current or voltage manually or also in digital remote control, the opposite set value
is always adjusted automatically according to formulas U
SET
= P
MAX
/ I
ADJ
and I
SET
= P
MAX
/ U
ADJ
. Thus, for example,
both set values can’t be set to 100% at the same time.
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