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:
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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