Alternating movement

Area

This is for revolving transfer machines and hydraulic presses.

The of the is "to-and-fro".

The rotation speed can vary greatly during the .

Outputs are positioned in both directions. The forward program can differ from the reverse program. There may be a prohibited zone defined as a protective zone (brake control).

Example of an alternating axis

In this application, the resolution is 4000 pulses per . The permitted movement zone is 3992 pulses. is performed at 90° of the mechanical origin (0) which is not accessible.

Timing diagram of an output

Timing diagram

Alternating movement

This is a typical movement for hydraulic presses and transfer machines. The axis describes a to and fro movement in a pulses domain equal to or less than the value of the cycle.

The "reading format" is type 1. The arrival of parts is synchronized by the machine (Machine Synchro).

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.

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.