Section 4
Binary input and output modules
4.1
Binary input
4.1.1
Binary input debounce filter
GUID-AE43976C-E966-484C-AF39-89B2B12F56DC v5
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
DebounceTime value and the debounced input
value is high or when the time counter reaches 0 and the debounced input value is low. The default
setting of
DebounceTime is 1 ms.
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
GUID-41B89E6F-50C3-44BF-9171-3CC82EB5CA15 v4
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
OscBlock, the input signal is blocked. The input signal is ignored until
the oscillation counter value during 1 s is below the set value
OscRelease.
4.1.3
Settings
GUID-07348953-4A72-444B-A31A-030ABEA8E0C4 v1
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.
4.1.3.1
Setting parameters for binary input modules
PID-3473-SETTINGS v2
Table 31: BIM Non group settings (basic)
Name
Values (Range)
Unit
Step
Default
Description
Operation
Disabled
Enabled
-
-
Enabled
Operation Disabled/Enabled
DebounceTime
0.001 - 0.020
s
0.001
0.001
Debounce time for binary inputs
OscBlock
1 - 40
Hz
1
40
Oscillation block limit
OscRelease
1 - 30
Hz
1
30
Oscillation release limit
1MRK 502 066-UUS B
Section 4
Binary input and output modules
81
Technical manual
Содержание Relion 670 series
Страница 1: ... RELION 670 SERIES Generator protection REG670 Version 2 1 ANSI Technical manual ...
Страница 2: ......
Страница 48: ...42 ...
Страница 62: ...56 ...
Страница 182: ...176 ...
Страница 692: ...686 ...
Страница 726: ...720 ...
Страница 1014: ...1008 ...
Страница 1242: ...1236 ...
Страница 1362: ...1356 ...
Страница 1386: ...1380 ...
Страница 1422: ...1416 ...
Страница 1431: ...1425 ...