Redundant Operation Of The Power Units (Vector) - Siemens SINAMICS S120 Function Manual

Extended Functions

Redundant operation of the power units (vector)

4.8 Redundant operation of the power units (vector)
Features
S Redundancy for power units
S Power unit can be de-activated via parameter (p0125)
S Power unit can be de-activated via binector input (p0895)
Description
Redundant operation can be used so that operation can be continued in spite of
the failure of one power unit connected in parallel. In order that the failed power
unit can be replaced, DRIVE-CLiQ cables must be connected in a star-type confi-
guration – it may be necessary to use a DRIVE-CLiQ HUB Module (DMC20). The
power unit can be de-activated using p0125 or using binector input p0895 (also
refer to Section 4.12).
Conditions
S Minimum firmware release 2.4
S Connecting power units in parallel with the appropriate power reserves (also
refer to Section 4.7).
S DRIVE-CLiQ star topology (possibly a DMC20, refer to the Equipment Manual)
S Motor with one single-winding system (p7003 = 0)
S No safe standstill
Integration
The boot function with partial topologies is integrated in the system as follows.
S p0125
S r0126
S p0895
S p7003
4-204
Activate/de-activate power unit component
Power unit component active/inactive
BI: Activate/deactivate power unit component
Par_circuit winding system
© Siemens AG 2006 All Rights Reserved
SINAMICS S120 Function Manual, 03/2006 Edition