Siemens SINAMICS S120 - Page 156

SINAMICS Safety Integrated (Booksize)
Safe standstill (SH)
5-156
E Siemens AG, 2004. All rights reserved
SINAMICS S120 Installation and Start-Up Manual, 12/04 Edition
Note
The grouping must be identical in both monitoring channels.
If a fault in a drive results in a “Safe standstill (SH)”, this does not automatically
mean that the other drives in the same group also switch to “Safe standstill (SH)”.
The assignment is checked during the test for the shutdown paths, whereby the
operator selects “Safe standstill” for each group. The check is drive specific.
Example: terminal grouping for “Safe standstill (SH)”
It must be possible to select/deselect “Safe standstill” separately for group 1
(drive 1 and 2) and group 2 (drive 3 and 4).
In addition, the same grouping for “Safe standstill” must be assigned on both the
Control Unit and the Motor Modules.
safety_sh_gruppe.vsd
r0722.6
Control Unit
EP
DI 6
M
Single
Motor
Module
Double
Motor
Module
Single
Motor
Module
Group 1
Group 2
EP EP EP
Select/deselect
SH
Group 1
Select/
SH
Group 2
r0722.7
DI 7
M
Drive 1
p9620
Drive 2
p9620
Drive 3
p9620
Drive 4
p9620
M M M
Drive
1
Drive
2 3
Drive
4
M
Line
Module
X132.3
X132.4
deselect
Fig. 5-2 Example: terminal grouping for “Safe standstill (SH)”