Line Contactor Control - Siemens SINAMICS S120 Function Manual

1.4

Line contactor control

Description
This function can be used to control an external line contactor. Opening and clos-
ing the line contactor can be monitored by evaluating the feedback contact in the
line contactor. The line contactor is used for the electrical isolation of the DC link
for the energy supply network.
The line contactor can be controlled using the following drive objects:
S Via bit r0863.1 of drive object INFEED
S Via bit r0863.1 of drive object SERVO/VECTOR
Note
For more information on the line connection, see the Equipment Manuals.
Example of commissioning line contactor control
Assumption:
S Line contactor control via a digital output of the Control Unit (DI/DO 8)
S Line contactor feedback via a digital input of the Control Unit (DI/DO 9)
S Line contactor switching time less than 100 ms
Line contactor
closed
Fig. 1-8
© Siemens AG, 2005. All rights reserved
SINAMICS S120 Function Manual, 06/05 Edition
r0863.1
Line contactor energized
Line contactor
feedback
p0860 = 0723.9
p0861 =
100 ms
T 0
=1
&
&
Line contactor control
DI/
DO
8
As output
p728.8 = 1 X122.7
<1>
p0738 = 0863.1
DI
/DO 9
X122.8
p0723.9
1
Active Line Module
Fault
F7300
"Line contactor
feedback
missing"
Supply
Line contactor control
L1
L2
L3
Line connection
24 V
<1> The current capacity of the
outputs must be observed.
An auxiliary contactor
may have to be used.
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