CEDRAT TECHNOLOGIES S.A.
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V.4. MODES OF OPERATION
The CCBu40 can be set by customer in different modes depending on the user requirements.
ANALOG AND DIGITAL COMMAND
The CCBu40 can receive analog or digital commands. The supervisor connector has two ±10V analog inputs
“AIX” and “AIY”, which should be used to apply the analog commands. In digital mode, the commands are sent
through the serial link. When the configuration switch N°2 is connected, the board uses only the analog inputs.
When this configuration switch is not connected, the type of command is selected in software between analog
and digital commands.
OPEN AND CLOSE LOOP OPERATION
The CCBu40 can operate in closed-loop or in open-loop. In open loop, the user commands are directly sent to
the power drives. In closed loop, the CCBu40 controls the system position based on the sensor feedback and
user commands. The selection between closed-loop and open-loop is done in software.
Note: The position of the configuration switches is only verified on power-up. If the configuration switch
is changed during operation, the CCBu40 will not change its configuration.
VI.
UNDERSTANDING THE FACTORY VERIFICATION SHEET
Each CCBu40 is delivered with a Factory Verification Sheet (FVS). This FVS is the proof that the CCB has
successfully pass CTEC acceptance tests.
The first table shows some useful information about the CCB like the CCB serial number (also mark on the top
cover).
The first test (Rising time / falling time) verifies for each output the peak current capability of the CCB which is
about 0.2A. these tests are done by measuring the voltage rising time on a capacitive load with a full amplitude
square order.
