Cc/Cv Priority - ITech IT6512C User Manual

3.17 Internal Resistance Setting
During the simulation of the battery charging/discharging, it's necessary to
consider about the internal resistance changes of the battery. For accurate
battery simulation test, IT6500C Series power supply provides internal
resistance setting to simulate various kinds of actual working statuses of the
battery.
To set internal resistance, follow the methods below.
1.
2.
3.

3.18 CC/CV Priority

IT6500C Series is innovatively designed with CV/CC priority concept in the
industry to solve various strict problems in long-term test applications and to
make applications (e.g., speedy or no-overshoot operation of power supply)
more flexible. As everyone knows, power supply has two working modes
including constant voltage and constant current, which correspond to two inside
loops (CV control loop and CC control loop). Traditional power supplies always
take CV loop as priority, which are not suitable for circumstances having high
requirements on current overshoot. With new CC/CV priority concept in
IT6500C, the user can realize CC control loop, response speed of CV control
loop and any combination setting of control loops under CC and CV mode
through the power supply menu interface to meet diversified field applications.
With this function, the user can save a lot of costs as no purchased parts are
required.
Example of application circumstance in typical configuration application:

Set Priority as CC, CC-Loop as High and CV-Loop as Low. This priority is
applicable for circumstances having high current overshoot requirements, like
LED lamp, laser test, etc.
Traditional power supply has low priority due to slow CC loop speed and cannot
quickly detect and inhibit current overshoot when the current reaches the set
current. Through IT6500C menu, you can set the CC control loop to High
priority to quickly make the power supply in constant current status so as to
inhibit current overshoot at the starting moment. Waveform characteristics are
as shown below. Yellow means output voltage and green means output current.
Press the composite key [Shift]+[V-set] (Setup) to enter the Configuring
Menu.
Select "Resistance" in the menu and press [Enter] for confirmation.
Set internal resistance value with number key and press [Enter] for
confirmation.
Strict requirements on current overshoot
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Function and Features
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