Description; Interlocking - Siemens SIPROTEC 4 7SJ61 Manual

individual control command. Additionally, user-defined interlocking conditions can be programmed separately
for each command. The actual execution of the command is also monitored afterwards. The overall command
task procedure is described in brief in the following list:
2.18.3.1

Description

Check Sequence
Please observe the following:
•
Command Entry, e.g. using the keypad on the local user interface of the device
– Check Password → Access Rights
– Check Switching Mode (interlocking activated/deactivated) → Selection of Deactivated interlocking
Recognition.
•
User configurable interlocking checks
– Switching Authority
– Device Position Check (set vs. actual comparison)
– Interlocking, Zone Controlled (logic using CFC)
– System Interlocking (centrally, using SCADA system or substation controller)
– Double Operation (interlocking against parallel switching operation)
– Protection Blocking (blocking of switching operations by protective functions).
•
Fixed Command Checks
– Internal Process Time (software watch dog which checks the time for processing the control action
between initiation of the control and final close of the relay contact)
– Setting Modification in Process (if setting modification is in process, commands are denied or
delayed)
– Operating equipment enabled as output (if an operating equipment component was configured, but
not configured to a binary input, the command is denied)
– Output Block (if an output block has been programmed for the circuit breaker, and is active at the
moment the command is processed, then the command is denied)
– Board Hardware Error
– Command in Progress (only one command can be processed at a time for one operating equipment,
object-related Double Operation Block)
– 1-of-n-check (for schemes with multiple assignments, such as relays contact sharing a common
terminal a check is made if a command is already active for this set of output relays).
Monitoring the Command Execution
The following is monitored:
•
Interruption of a command because of a Cancel Command
•
Runtime Monitor (feedback message monitoring time)

Interlocking

2.18.4
System interlocking is executed by the user-defined logic (CFC).
2.18.4.1 Description
Interlocking checks in a SICAM / SIPROTEC 4 system are normally divided in the following groups:
SIPROTEC 4, 7SJ61, Manual
C53000-G1140-C210-6, Edition 05.2016
Functions
2.18 Breaker Control
221