Binary Input And Output Modules; Binary Input; Binary Input Debounce Filter; Oscillation Filter - ABB RELION 670 Series Technical Manual

1MRK 502 066-UUS B
Section 4
4.1

Binary input

4.1.1

Binary input debounce filter

The debounce filter eliminates bounces 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
value is high or when the time counter reaches 0 and the debounced input value is low. The default
setting of
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.
4.1.2

Oscillation filter

Binary input wiring can be very long in substations and there are electromagnetic fields from for
example nearby breakers. An oscillation filter is used to reduce the disturbance from the system
when a binary input starts oscillating.
An oscillation counter counts the debounced signal state changes during 1 s. If the counter value is
greater than the set value
the oscillation counter value during 1 s is below the set value
4.1.3

Settings

4.1.3.1

Setting parameters for binary input modules

Table 31: BIM Non group settings (basic)
Name Values (Range)
Operation Disabled
Enabled
DebounceTime 0.001 - 0.020
OscBlock 1 - 40
OscRelease 1 - 30
Technical manual

Binary input and output modules

DebounceTime is 1 ms.
OscBlock , the input signal is blocked. The input signal is ignored until
OscBlock must always be set to a value greater than OscRelease . If this is not done,
oscillation detection will not function correctly, and the resulting behaviour will be
undefined.
Unit
-
s
Hz
Hz
DebounceTime value and the debounced input
Step Default
- Enabled
0.001 0.001
1 40
1 30
Binary input and output modules
GUID-AE43976C-E966-484C-AF39-89B2B12F56DC v5
GUID-41B89E6F-50C3-44BF-9171-3CC82EB5CA15 v4
OscRelease .
GUID-07348953-4A72-444B-A31A-030ABEA8E0C4 v1
Description
Operation Disabled/Enabled
Debounce time for binary inputs
Oscillation block limit
Oscillation release limit
Section 4
PID-3473-SETTINGS v2
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