ABB REB500 - Page 20

Section 2 1MRK 505 350-UEN
Signals
12 Technical Manual
Distributed busbar protection REB500
14205_Block EFP
Blocks operation
of EFP for corresponding bay unit. When the
blocking signal is cancelled, the timers start again at t = 0.
14405_BP EFP Manual Close
This signal is set by the bay protection when the circuit
-
breaker
receives a close command to prevent EFP from tripping.
1
4605_EFP ext release_1
14610_EFP ext release_2
Providing this input is configured,
E
F
P
is enabled by
an external
signal.
15210_Block OCDT
Blocks operation of OCDT. When the blocking signal is cancelled,
the timer starts again at t = 0.
17205_Block PD
F
Blocks operation of PDF. The timers start at t
=
0 when the input
resets.
1
7610_PDF ext release
Providing this input is configured, PDF is enabled by
an external
signal.
Table 8 BU input signals for disturbance recorder (DR)
Signal Description
16705...16750_Start
DR_x
The disturbance recorder function is started by an external signal applied to
one of these 10 inputs (x = 1 to 10), or they can be simply used for recording
purposes. The external signal may come, for example, from the tripping
contact of a bay protection relay or the starting contact of a time-overcurrent
relay. Optocouplers are configured for these inputs. The signal “16750_Start
DR_10” is also transferred to the central unit where it initiates the general
start of all disturbance recorders in the bay units. The disturbance recorder in
the central unit is not started by this signal.
16760_BP Global
Start DR
Those disturbance recorders in the bay units that are configured start. The
signal ‘Central start DR’ in the bay units must be configured. This signal is
directly activated by the bay protection unit and does not therefore appear as
a binary input signal.
Table 9 BU input signals for voltage release (UV)
Signal Description
18205_Fuse failure
superv. UV
Provision is made for a tripped
MCB
to apply a signal to the input
“18205_Fuse failure superv. UV” and enable tripping of the protection zone
concerned.
Table 10 BU input signals for bay protection
Signal Description
19205_Block BP
Blocks the protection output signals of the respective bay unit. Internal
processing of the functions continues and therefore measurements and
signals continue to be displayed on the local HMI.
19600_Activation BP
ParSet_1
The protection functions and settings assigned to parameter set 1, 2, 3, or 4,
respectively, are active. They remain active after the signal has been reset.
19605_Activation BP
ParSet_2
19610_Activation BP
ParSet_3
19615_Activation BP
ParSet_4
BP input signals
available for
configuration
In addition to the bay protection input signals in this table, which are always
available, use can also be made of the signals configured for the binary
signal input block of the bay protection. The number of these signals
depends on the protection functions and signals included in the bay
protection.