Direction Reversal - Siemens SINAMICS G150 Operating Instructions Manual

Converter cabinet units 1750 kw 2700 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.

Incorrect rotating field when the cables were routed

If an incorrect phase sequence was connected when the cables were installed, and the

cabling cannot be changed, the phase sequence can be changed during drive

commissioning using p1821 (phase sequence direction reversal), thus enabling a direction

reversal. Modifying parameter p1821 produces a direction reversal of the motor and the

actual encoder value without changing the setpoint.

Preconditions

Direction reversal is initiated:

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

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

Delivery condition

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, 07/2016, A5E03347396A

Direction limitation and direction reversal

BI: Inhibit negative direction

BI: Inhibit positive direction

BI: Setpoint inversion

Setpoint after direction limiting

Setpoint channel and closed-loop control

7.2 Setpoint channel

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