Siemens SINAMICS S120 Function Manual page 19

Terminal diagram for Active Infeed
Chassis
Fig. 1-2
Operating modes of Active Infeed closed-loop control for Active Line Modules Booksize
The Active Line Module can be operated in two different modes depending on the
parameterized line supply voltage (p0210):
S Active Mode
In Active Mode, the DC link voltage is regulated to a variable setpoint (p3510),
which results in a sinusoidal line current (cosϕ = 1).
S Smart Mode
In Smart Mode, the DC link voltage is not regulated but is, instead, derived from
the rectified line supply voltage. The current waveform in the direction of
incoming supply is the same as that of a B6 diode converter. A square-line
current occurs in the direction of regenerative feedback.
The DC link voltage setpoint (p3510) and the control type are preset as follows du-
ring commissioning in line with the connection voltage (p0210):
Table 1-1 Presetting the control type and DC link voltage booksize
Supply voltage p0210
[V]
Control type p3400.0
Vdc_setp p3510 [V]
1) Voltages specified for Smart Mode are derived from the rectified line supply voltage. The DC link voltage
setpoint (p3510) has no effect in this control mode.
© Siemens AG 2006 All Rights Reserved
SINAMICS S120 Function Manual, 03/2006 Edition
Control unit
Firmware
Active
Infeed
Control
Schematic structure of Active Infeed Chassis
380– 400 401– 415
"0" = Active Mode
600 625
Network
Main switches
Fuses
Active Interface Module
Voltage Sensing Module
Manipulated
variables
Active Line Module
Actual values
DRIVE-CLiQ
DC link
416– 440
"1" = Smart Mode
1)
562– 594
Infeed
Active Infeed
Actual
values
DRIVE-CLiQ
460 480
1) 1)
621 648
1-19