ABB Relion 670 Series Technical Reference Manual page 760

Section 12
Control
12.5
12.5.1
12.5.2
754
Table 380: POS_EVAL Output signals
Name Type
OPENPOS BOOLEAN
CLOSEPOS BOOLEAN
Logic rotating switch for function selection and LHMI
presentation SLGGIO
Function description
Logic rotating switch for function
selection and LHMI presentation
Introduction
The logic rotating switch for function selection and LHMI presentation (SLGGIO) (or
the selector switch function block) is used to get a selector switch functionality similar
to the one provided by a hardware 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 an extended purchase portfolio. The logic selector switches eliminate all
these problems.
Principle of operation
The logic rotating switch for function selection and LHMI presentation (SLGGIO)
function has two operating inputs – UP and DOWN. When a signal is received on the
UP input, the block will activate the output next to the present activated output, in
ascending order (if the present activated output is 3 – for example and one operates the
UP input, then the output 4 will be activated). When a signal is received on the DOWN
input, the block will activate the output next to the present activated output, in
descending order (if the present activated output is 3 – for example and one operates
the DOWN input, then the output 2 will be activated). Depending on the output
settings the output signals can be steady or pulsed. In case of steady signals, in case of
UP or DOWN operation, the previously active output will be deactivated. Also,
depending on the settings one can have a time delay between the UP or DOWN
activation signal positive front and the output activation.
Besides the inputs visible in the application configuration in the Application
Configuration tool, there are other possibilities that will allow an user to set the desired
Description
Open position
Close position
IEC 61850 IEC 60617
identification identification
SLGGIO -
1MRK505222-UUS C
ANSI/IEEE C37.2
device number
-
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