ABB RELION REB500 Operation Manual page 18

Section 3
Signals
Signal
15210_Block OCDT
17205_Block PDF
17610_PDF ext release
Table 8:
Signal
16705...16750_Start DR_x
16760_BP General Start DR
Table 9:
Signal
18205_Fuse failure superv. UV
12
Description
Blocks operation of OCDT. When the blocking signal is cancelled, the timer
starts again at t = 0.
Blocks operation of PDF. The timers start at t = 0 when the input resets.
Providing this input is configured, PDF is enabled by an external signal.
BU input signals for disturbance recorder (DR)
Description
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 with
appropriate configuration).
To ensure this functionality, the following additional signals must be
configured and defined as a trigger under the DR:
•
•
This signal is used to start all appropriately configured disturbance
recorders in the system (General start disturbance recorder). To ensure
this functionality, the following additional signals must be configured and
defined as a trigger under the DR:
•
•
BU input signals for voltage release (UV)
Description
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.
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For the start of the DR of the central unit the CU output signal
46705_DR general started
For the start of the DR of the bay units the BU input signal
11765_General Start DR
For the start of the DR of the central unit the CU output signal
46705_DR general started
For the start of the DR of the bay units the BU input signal
11765_General Start DR
This signal is directly activated by the bay protection
unit and does not therefore appear as a binary input
signal.
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