Applications
These function blocks (FB) mainly serve to configure applications with a master frequency network ('electrical shaft') of electronic cam profile generators. Thanks to the use of internal overflow memories incremental losses via speed processing do not occur anymore. Arithmetic connections of master frequency signals are executed according to residual value treatment.
Description
The function blocks mentioned above are equipped with the following signal outputs and configuration codes due to the revision to version V3.4:
PT1-2
- -DIFF: Signal output (inc) for evaluating / linking the contents of the internal temporary overshoot memory
- -LIM: Signal output (bin) for evaluating a status message, True = The speed output is at the limit of +/- 29999 rpm.
- -MEM: Signal output (bin) for evaluating a status message, True = There is a position difference in the internal overflow memory.
- -RESET: Signal input (bin), True = Deleting an internal overflow memory, True = Setting PT1-2-DFOUT = 0 rpm
A 'compensating velocity' ranging from 0...16000 rpm for the damping between output and input of the FB can be set under code C0646/1. If 0 rpm is set a position compensation will not be carried out. The position difference remains in the temporary overshoot memory.
CONVPHPHD2
- -LIM: Signal output (bin) for evaluating a status message, True = The speed output is at the limit of +/- 29999 rpm.
LIMPHD1
- -DiFF: Signal output (inc) for evaluating / linking the contents of the internal overflow memory
- -LIM: Signal output (bin) for evaluating a status message, True = The speed output is at the limit of +/- 29999 rpm.
A new mode has been added under code C10850. By setting the parameters of this code it can be selected whether the internal memory of the FB is to be deleted or output when activating the function LIMPHD1-NO-LIM.
ADDPHD1
- -LIM: Signal output (bin) for evaluating a status message, True =The speed output is at the limit of +/- 29999 rpm.
The control of the functions is to be simplified by means of the above mentioned additional status messages and linking possibilities to the internal memories of the function blocks.
This enables, for instance, a query whether there are phase differences in the function blocks, how large they are or how much time is required for an initialisation or homing until compensation is reached.
Attention:
Internal memories can store a position difference up to 2147483647 (2^31-1) increments. If this difference is exceeded the defined position will get lost (position overflow). In this case the FBs are to be reset via the input RESET (not ADDPHD).
