Direction Reversal - Siemens SINAMICS G150 Operating Instructions Manual

Converter cabinet units 75 kw to 1500 kw

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Table of Contents

Functions, Monitoring, and Protective Functions

9.2 Drive Functions

Direction reversal

The direction of rotation of the motor can be reversed using direction reversal via p1821

without having to change the motor rotating field by interchanging two phases on the motor

and inverting the encoder signals using p0410.

Reversal via p1821 can be detected from the motor direction of rotation. The speed setpoint

and actual value, torque setpoint and actual value remain unchanged, as does the relative

position change.

A pulse inhibit must be set prior to attempting reversal.

Reversing can be set differently for each drive data set.

When changing over the drive data set to differently set reversing and with pulse approval,

fault F7434 is issued.

Reversing can be observed by checking parameters r0069 (phase currents) and r0089

(phase voltage). The absolute position reference is lost on reversal.

Function diagram

FD 4704, 4715

FD 6730, 6731

Simulation operation

Encoder evaluation

Current control

Phase currents actual value

Phase voltage actual value

Reverse output phase sequence

Direction of rotation

Converter cabinet units

Operating Instructions, 03/2012, A5E03263466A