Timely switching of cams

To switch the cam with position accuracy, the input xEnable must be set several cycles in advance.

When using a FAST-IO, the trigger for switching must be sent to the EPM-S310 several cycles before.

To switch the cam in time, use the following approximate calculation:

Differential switching position [units] = 7 * (velocity [units/s] / 1000) * Task time [ms]

Example

The cam should be switched on at 180 units in the positive direction of action.

  • Velocity: 5000 units/s
  • Task time: 1 ms

Entering these values in the rough calculation mentioned above gives the value "35" units, i. e. if the position 145 units (180 - "35") is exceeded, the input xEnable must be set so that the cam can be activated at 180 units