Integration - Siemens SINAMICS S120 Function Manual

Extended functions
Parallel Connection of Chassis Power Units (Vector) function module
4.7.2

Integration

Important parameters (see List Manual)
S p0120
S p0121
S p0602
S r7000
S r7001
S r7002
S p7003
S p7010
S p7011
S ...
S p7322
4.7.3 Description
Parallel switching of power units is a simple means of extending the power spec-
trum of drives beyond the power of the individual power units.
To prevent large compensating currents between the power units, the following
basic prerequisites must be observed during configuration:
S Motor Module
-- The motor supply cables must be the same length.
-- When motors with a single winding systems are used, supply cables with a
minimum length or a motor reactor must be used.
-- Same power units with regard to the order number, EPROM data (r0127)
and firmware version (r0128)
-- Connection to the same DC link
S Infeeds
-- Same power units with regard to the order number, EPROM data (r0127)
and firmware version (r0128)
-- For Active Interface Module: Same order number and firmware version for
all Voltage Sensing Modules (VSM)
-- A separate line reactor for each Basic Line Module. The parallel connection
must be in front of the choke.
-- The DC links must be connected.
4-182
Power module data set (PDS) number
Power module component number
Power module number, temperature sensor for parallel circuit
configuration
Parallel circuit configuration, number of active power modules
Parallel circuit configuration, enable power modules
Parallel circuit configuration, status power modules
Parallel circuit, winding system
Parallel circuit configuration, current dissymmetry alarm
threshold
Parallel circuit configuration, DC link voltage dissymmetry,
alarm threshold
Parallel circuit configuration, VSM line filter capacitance,
phase W
© Siemens AG, 2005. All rights reserved
SINAMICS S120 Function Manual, 06/05 Edition