Rotary movements

Area

This is for mechanical presses and packaging machines.

The main movement of the is in a single direction of rotation. The positioning of the outputs is the same for each . Outputs can be activated between two cycles.

The linear speed is not necessarily constant during movement. The machine must stop within a precise zone.

Two types of can be used, absolute or incremental. For drives with slip, it is preferable to use an .

Example of a rotating axis

A press cycle represents 2000 encoder pulses. Synchronization of the axis (correction of ) will start at 800 pulses in relation to the physical origin of the tools. is carried out systematically at each cycle.

Cycle

Area in which the action of the outputs can be programmed.

NOTE: A complete cycle of the machine (machine cycle) must be a whole number of cycles.

Incremental encoder

Pulse generator with 2 signals offset by 90°. These are produced according to the movement of the axis and are counted by the module.

Slipping

This is the error of pulse loss in a cycle. This can be caused by the mechanical transmission of the axis. The module allows measurement of this slip (see: "deviation angle").

Recalibration

This is the module function which is used to adjust the axis in relation to the machine zero or to synchronize the axis in relation to the arrival of a part.

Recalibration forces the position reading to a value which is predefined by the "recalibration value" parameter (included in the pulse field of the cycle).

The module allows recalibration to be carried out systematically for each cycle or for only one cycle. This recalibration is always conditioned to the IREC input.