Infeed Modules - Siemens SIMODRIVE 611 Planning Manual

Infeed Modules

Description
The drive group is connected to the power supply through the infeed modules.
The infeed/regenerative feedback module (I/R module) and the module for un-
controlled infeed (UI module) is used to feed the power to the DC voltage link.
Furthermore, the I/R, UI, and the monitoring module also provides the electro-
nics power supply for the connected modules.
UI module
For the UI module, the energy of the drives fed into the DC link when braking is
converted into heat in the integrated brake resistors or brake resistors which
should be mounted externally and then dissipated to the ambient air. When
required, in addition, one or several pulsed resistor modules can be used within
the configuring limits. This module is used for:
S
S
S
I/R module
For the I/R module, the energy of the drives, fed into the DC link when braking,
is fed back into the line supply. This module is used for:
S
S
S
Monitoring module
The monitoring module includes a complete electronics power supply for the
equipment bus and the central monitoring functions for a separate drive group.
The power supply can be derived from both the 3–ph. 400V to 480V AC line
supply as well as from the DC link. The monitoring module is required if a larger
number of drive modules in a group exceeds the electronics power supply of
the infeed module (I/R or UI module). Using the monitoring module, groups of
drive modules can be formed in several cabinet panels or mounting tiers.
Arrangement
The I/R, UI and monitoring module are located as the first module to the left in
the drive group.
The line supply infeed and drive modules as well as the commutating reactors
and line filters must be mounted on mounting panels with a good conductive
surface (e.g. galvanized mounting panel).
 Siemens AG 2001 All rights reserved
SIMODRIVE 611 Planning Guide (PJU) – 05.01 Edition
Machines with only a few and short braking cycles with low energy when
braking
Operation on line supplies from SK
Drive groups with low dynamic requirements, especially for main spindle
drives
Machines with high dynamic requirements placed on the drives
Frequent braking cycles and high levels of braking energy
Cabinet concepts optimized for low operating costs
y 30
/P
line supply nUI
6
6
6-161