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Figure 9-49
Using the spindle pitch parameterized in parameter p9520, rotary motion is converted into
linear motion. EPOS does not take into account spindle pitch. Instead, the LUs are defined in
the number of load revolutions in p2506. The load revolutions refer to the movement of the
ball screw, that is, the motion after the gearbox. The ratio for the gearbox used must be
parameterized in p9521/p9522 for Safety Integrated Extended Functions and in
p2504/p2505 for EPOS.
For a gearbox to convert from 4 motor revolutions to 3 load revolutions, set:
● p9521 = 3
● p9522 = 4
● p2504 = 4
● p2505 = 3
Flying referencing using Safety Integrated Extended Functions
Flying referencing is frequently used to compensate for any inaccuracies in the actual value
sensing, and therefore to optimize positioning accuracy on the load side. The Safety
Integrated Extended Functions have lower accuracy requirements than the control. For
Safety Integrated Extended Functions, cyclic adjustment is not necessary.
The initial activation signal initiates referencing. If, at the next switching signal, it is detected
that the "referenced" state already exists, then no new reference position is transferred to
Safety Integrated Functions.
Enclosed Drives
Operating Instructions, 12/2018, A5E36652151A
Example 3: Rotary encoder for EPOS and Safety Integrated
Functions, monitoring and protective functions
9.4 Extended functions
677
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