Section 16 Basic Ied Functions; Binary Input; Binary Input Debounce Filter; Oscillation Filter - ABB REG650 Technical Manual

1MRK 502 034-UEN -
Section 16
16.1
16.1.1
16.1.2
Table 398: BIO_9BI Non group settings (basic)
Name Values (Range)
BatteryVoltage
Technical Manual
Basic IED functions

Binary input

Binary input debounce filter

The debounce filter eliminates debounces and short disturbances on a binary input.
A time counter is used for filtering. The time counter is increased once in a
millisecond when a binary input is high, or decreased when a binary input is low. A
new debounced binary input signal is forwarded when the time counter reaches the
set DebounceTimevalue and the debounced input value is low or when the time
counter reaches 0 and the debounced input value is high.
The binary input ON-event gets the time stamp of the first rising edge, after which
the counter does not reach 0 again. The same happens when the signal goes down
to 0 again.
Each binary input has a filter time parameter DebounceTime#, where # is the
number of the binary input of the module in question (for example DebounceTime1).

Oscillation filter

Binary input lines can be very long in substations and there are electromagnetic
fields from, for example, nearby breakers. Floating input lines can result in binary
inputs' activity. These events are unwanted traffic in the system. An oscillation
filter is used to reduce the load from the system when a binary input starts oscillating.
Each debounced input signal change increments an oscillation counter. Every time
the oscillation time counter reaches the set OscillationTime, the oscillation counter
is checked and both the counters are reset. If the counter value is above the set
OscillationCount value the signal is declared as oscillating. If the value is below
the set OscillationCount value, the signal is declared as valid again. During
counting of the oscillation time the status of the signal remains unchanged, leading
to a fixed delay in the status update, even if the signal has attained normal status again.
Each binary input has an oscillation count parameter OscillationCount# and an
oscillation time parameter OscillationTime#, where # is the number of the binary
input of the module in question.
Unit
24 - 250 V
Step Default
1 110
Section 16
Basic IED functions
Description
Station battery voltage
479