Direction Reversal - Siemens SINAMICS G150 Operating Instructions Manual

Converter cabinet units 75 kw to 1500 kw

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Direction reversal

Due to the direction reversal in the setpoint channel the drive can be operated in both

directions with the same setpoint polarity.

Use the p1110 or p1111 parameter to block negative or positive direction of rotation.

If an incorrect rotating field was connected when the cables were installed, and the cabling

cannot be changed, the rotating field can be corrected during drive commissioning via p1821

(rotating field direction reversal) to allow a direction reversal (see section "Direction

reversal"). Modifying parameters p1821 produces a direction reversal of the motor and the

encoder actual value without changing the setpoint.

Prerequisites

Direction reversal is triggered:

● via PROFIBUS by means of control word 1, bit 11

● via the cabinet operator panel (LOCAL mode) with the "Direction reversal" key.

Note that only one direction of rotation is enabled in the delivery condition when control is

carried out via the AOP30.

Function diagram

Converter cabinet units

Operating Instructions, 03/2012, A5E03263466A

Direction of rotation limiting and direction of rotation changeover

BI: Inhibit negative direction

BI: Inhibit positive direction

BI: Setpoint inversion

Setpoint channel and closed-loop control

7.2 Setpoint channel