ABB RET670 Applications Manual

3.12.5 Logic rotating switch for function selection and LHMI
presentation SLGGIO
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Logic rotating switch for function
selection and LHMI presentation
SLGGIO - -
3.12.5.1 Application
The logic rotating switch for function selection and LHMI presentation function
(SLGGIO) (or the selector switch function block, as it is also known) is used to get a
selector switch functionality similar with the one provided by a hardware multi-
position selector switch. Hardware selector switches are used extensively by utilities,
in order to have different functions operating on pre-set values. Hardware switches are
however sources for maintenance issues, lower system reliability and extended
purchase portfolio. The virtual selector switches eliminate all these problems.
SLGGIO function block has two operating inputs (UP and DOWN), one blocking input
(BLOCK) and one operator position input (PSTO).
SLGGIO can be activated both from the local HMI and from external sources
(switches), via the IED binary inputs. It also allows the operation from remote (like the
station computer). SWPOSN is an integer value output, giving the actual output
number. Since the number of positions of the switch can be established by settings (see
below), one must be careful in coordinating the settings with the configuration (if one
sets the number of positions to x in settings – for example, there will be only the first x
outputs available from the block in the configuration). Also the frequency of the (UP or
DOWN) pulses should be lower than the setting tPulse.
From the local HMI, there are two modes of operating the switch: from the menu and
from the Single-line diagram (SLD).
3.12.5.2 Setting guidelines
The following settings are available for the Logic rotating switch for function selection
and LHMI presentation (SLGGIO) function:
Operation: Sets the operation of the function Enabled or Disabled.
NrPos: Sets the number of positions in the switch (max. 32). This setting influence the
behavior of the switch when changes from the last to the first position.
OutType: Steady or Pulsed.
Section 3 1MRK504116-UUS C
IED application
706
Application manual

ABB RET670 Specifications

General

Rated Frequency	50/60 Hz
Inputs	Analog and binary inputs
Application	Protection of power systems
Communication Protocols	IEC 61850, DNP3, Modbus
Operating Temperature Range	-25°C to +55°C
Mounting	Rack mounted
Number of Binary Inputs	Up to 48
Number of Binary Outputs	32
Protection Functions	Overcurrent Protection
Outputs	Binary outputs
Enclosure	IP 54
Type	Line Differential Protection
Number of Analog Inputs	24