Active Infeed; Active Infeed Closed-Loop Control - Siemens SINAMICS S120 Function Manual

Supply

Active infeed

1.1 Active infeed
1.1.1

Active Infeed closed-loop control

Features
S Controlled DC link voltage whose level can be adjusted
S Regenerative feedback capability
S Specific reactive current setting
S Low line harmonics, sinusoidal line current
Description
Active Infeed closed-loop control works together with the line reactor and the Ac-
tive Line Module as a step-up converter. The DC voltage level can be defined via
parameters.
The open and closed-loop control firmware for the Active Line Module runs on the
Control Unit assigned to it. The Active Line Module and Control Unit communicate
via DRIVE-CLiQ.
Terminal diagram for Active Infeed
booksize
Fig. 1-1
1-18
Control unit
Firmware
Active
Manipulated variables
Infeed
Control
DRIVE CLiQ
Schematic structure of Active Infeed (booksize)
Network
--breaker
Main circuit
with leading auxiliary
contact
Fuses
Line contactor
(
optional
Line filter (
optional
Line reactor
Active Line Module
Actual values
DC link
© Siemens AG, 2005. All rights reserved
SINAMICS S120 Function Manual, 06/05 Edition
)
)