Siemens 6MD85, Manual

Page: 351 / 1256

You can use the function block Ext. 1-of-N check in the Circuit breaker and Disconnector function groups. In
order to use the function, a control model with feedback monitoring must be configured in the circuit-
breaker control.
[sc_library properties info routing Ext 1-out-of-n control, 1, en_US]
Figure 6-46 Command Execution
If the external 1-of-N check is instantiated, the output
Release request
prompts a central bay controller
before executing a switching command. This bay controller must permit the switching operation (see the
following figure). If the allocated switching devices were locked in another bay, the release is issued. Only
when the release was issued via the input
>Release active
is the allocation (
Control model
:
SBO w.
enh. security
) or the switching command (
Control model
:
direct w. enh. security
) executed
and confirmed. The central bay controller is parameterized to reject a 2nd switching request.
[dw_block-ext-setzen, 1, en_US]
Figure 6-47 Setting the Blocking
Once the switch position has been reached, interlocking of the switching devices is canceled via the output
Release request
. The switching command is completed and acknowledged with CMT (see the following
figure) only when interlocking termination has been acknowledged positively via the input
>Release
active
.
Control Functions
6.3 Control Functionality
SIPROTEC 5, High-Voltage Bay Controller, Manual 351
C53000-G5040-C015-9, Edition 11.2017