ACC 01

Axis Control Card

ACC 01 English Tech. Manual PDF format.

Ver. 5.00 - Rel.. 03 October 2003.

ACC 01 is a sophisticated card capable to perform the task to control the velocity profile of an axis through a DC, AC or BRUSHLESS motor actuator.

Communication and programming are made through BUS by one of the several CPU cards compliant with ABACO® Industrial BUS and it is reduced to a simple initialization sequence that sets the internal registers and a handy loop that waits the end of the trajectory.

Once the ACC 01 has been programmed and the Start command has been sent, it is capable to perform the movement profile that has been specified. This is done in complete autonomy and without any intervent from the CPU card: the card controls and regulates automatically the acceleration, the speed, the position and the deceleration along the complete movement profile.

The sophisticated on board circuitery allows even to change the parameters of the velocity profile also when ACC 01 is busy in controllng the axis. It is possible to decide to change the working conditions, switching to new data, in any moment.

This way becomes possible to perform very elaborate velocity profiles assuring the maximum safety about the final results. Furthermore a group of coefficients, always programmable, allows the activation of a PID control which is capable to mantain the real movement really near to the theoretic one, even if there are external variable elements as the motor loads, the axis inertia, the vibrations, etc.
The tipical use of ACC 01, also for its low cost, ranges from the employ in simple positioners to much more complicted industrial numeric controlled systems (CNC).

A great amount of optocoupled and buffered digital I/O resources are already installed on the board. This reduces the minimun number of boards involved in the hardware system that resolves the application even when the common problems related to axis control must be satisfied (i.e. start and stop axis travel, allarms and commands for motor actuator, electric brakes, etc.).

In order to make easy the ACC 01 interface to the field, there is a serie of BLOCK modules FBC type which allow to connect the various flat cables to the easy quick screw terminal connectors.


Block schematic representation of ACC 01 board control structure


The two graphics show two typical velocity profiles. The first shows a standard trapezoidal velocity profile. The secons shows the possibility to change the parameters during the motion, implementing so a modified velocity profile


Graphic representation of the temporal relation amongst the three typical signals coming from a bidirectional encoder


Data Sheet ACC 01, Rel. 03.10


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