Siemens SINAMICS S150 NEMA Operating Instructions Manual page 468

Converter cabinet units

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Table of Contents

Setpoint channel and closed-loop control

7.4 Vector speed/torque control with/without an encoder

Actual speed value filter

The speed actual value filter is used to suppress cyclic disturbance variables in speed

acquisition.

The speed actual value filter can be set as follows:

● 2nd order lowpass (PT2: -40 dB/decade)

● General 2nd order filter

Bandstop and low-pass with reduction are converted into the parameters of the general 2nd

order filter using STARTER.

The speed actual value filter is activated with p1656.4 = 1. The properties of the speed

actual value filter are set in p1677 to p1681.

As long as changes to the data of the actual speed value filter are being made, the

conversion of the new filter data can be prevented using p1699 = 1.

When p1699 = 0 is set, the calculation will be performed and the new values applied.

For the vector control, there are 2 current setpoint filters and one actual speed value filter.

The actual speed value filter has been allocated the number "5".

Function diagram

• p1655[4] CI: Speed actual value filter 5 natural frequency tuning

Encoder evaluation - speed actual value and pole position sensing, motor

encoder (encoder1), n_act_filter 5

Speed actual value filter 5 activation

Actual speed value filter 5 type

Actual speed value filter 5 denominator natural frequency

Actual speed value filter 5 denominator damping

Actual speed value filter 5 numerator natural frequency

Actual speed value filter 5 numerator damping

Filter data acceptance

Operating Instructions, 12/2018, A5E36652151A

Enclosed Drives