Siemens SINAMICS S150 NEMA Operating Instructions Manual page 607

Converter cabinet units
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Example:
● Gear ratio 1:3 (motor revolutions p0433 to encoder revolutions p0432)
● Absolute encoder can count 8 encoder revolutions (p0421 = 8)
Figure 9-17
Drive with odd-numbered gearboxes without position tracking
In this case, for each encoder overflow, there is a load-side offset of 1/3 of a load revolution,
after 3 encoder overflows, the motor and load zero position coincide again. The position of
the load can no longer be clearly reproduced after one encoder overflow.
If position tracking is activated via p0411.0 = 1, the gear ratio (p0433/p0432) is calculated
with the encoder position actual value (r0483).
Figure 9-18
Odd-numbered gears with position tracking (p0412 = 8)
Features
● Configuration via p0411
● Virtual multiturn via p0412
● Tolerance window for monitoring the position at power ON p0413
● Input of the measuring gear via p0432 and p0433
● Display via r0483
Enclosed Drives
Operating Instructions, 12/2018, A5E36652151A
Functions, monitoring and protective functions
9.3 Drive functions
605

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