Siemens SIPROTEC 4 User Manual

Control Logic using CFC
For bay interlocking, a release logic can be created using CFC. Via specific release conditions the information
"released" or "bay interlocked" are available (e.g. object "52 Close" and "52 Open" with the data values: ON/
OFF).
Switching Authority (for devices with operator panel)
The interlocking condition "Switching Authority" serves for determining the switching authority. It enables the
user to select the authorized command source. For devices with operator panel, the following switching
authority ranges are defined in the following priority sequence:
•
LOCAL
•
DIGSI
•
REMOTE
The object "Switching Authority" serves to interlock or enable LOCAL control, but not REMOTE or DIGSI
commands. The devices in housing of size
1
/
2
- or
1
/
1
are equipped with key switches on the front panel. The
top switch is reserved for the switching authority. The position "Local" enables local control, the position
"Remote" enables remote control. For devices in housing of size
1
/
3
the switching authority can be changed
between "REMOTE" and "LOCAL" in the operator panel after having entered the password or by means of CFC
also via binary input and function key.
The "Switching authority DIGSI" is used for interlocking and allows commands to be initiated using DIGSI.
Commands are allowed for both a remote and a local DIGSI connection. When a (local or remote) DIGSI PC
logs on to the device, it enters its Virtual Device Number (VD). The device only accepts commands having that
VD (with switching authority = OFF or REMOTE). When the DIGSI PC logs off, the VD is cancelled.
Commands are checked for their source SC and the device settings, and compared to the information set in
the objects "Switching authority" and "Switching authority DIGSI".
Configuration
Switching authority available
y/n (create appropriate object)
Switching authority available DIGSI y/n (create appropriate object)
Specific device (e.g. switching device) Switching authority LOCAL (check for Local status): y/n
Specific device (e.g. switching device) Switching authority REMOTE (check for LOCAL, REMOTE, or
DIGSI commands: y/n
Table 2-31 Interlocking logic
Current
Switching
Authority Status
Switching Command Issued with
SC
3)
=LOCAL
Command Issued from
SC=LOCAL or REMOTE
Command issued from
SC=DIGSI
LOCAL not
registered
Allowed
Interlocked
2)
- "switching
authority LOCAL"
Interlocked "DIGSI not
registered"
LOCAL Checked Allowed
Interlocked
2)
- "switching
authority LOCAL"
Interlocked
2)
- "switching
authority LOCAL" „verrie-
gelt, da VORORT–
Steuerung”
REMOTE Not checked
Interlocked
1)
- "switching
authority REMOTE"
Allowed Interlocked "DIGSI not
registered"
REMOTE Checked
Interlocked
1)
- "switching
authority DIGSI"
Interlocked
2)
- "switching
authority DIGSI" „verrie-
gelt, da DIGSI–Steuerung”
Allowed
1)
also "Allowed" for: ”switching authority LOCAL (check for Local status): is not marked
2)
also "Allowed" for: ”Switching authority REMOTE (check for LOCAL, REMOTE, or DIGSI status): is not marked"
3)
SC = Source of command
Functions
2.27 Breaker Control
SIPROTEC 4, 7SJ62/64, Manual 361
C53000-G1140-C207-8, Edition 08.2016

Siemens SIPROTEC 4 Specifications

General

Brand	Siemens
Model	SIPROTEC 4
Category	Protection Device
Language	English