ABB REX 521, Technical Reference Manual, Standard Configurations

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1MRS751802-MUM Protection Relay
Technical Reference Manual, Standard Configurations
REX 521
The open signal from the auto-recloser is connected as the trip directly to the HSPO1
and the close signal is connected to the same output signal as the close signal from
the circuit breaker function. The reclose signal is depended on the interlocking
method chosen for closing of the breaker. If the trip is activated during the close-
pulse period, the close signal is deactivated. Alarms and action signals are available
as three different signals from the auto-recloser. The signals can be found in
Main menu\Configuration\Output SWGRP\
and they are named as O->I
ACTIVE, O->I Alarm1 and O->I Alarm2. Refer to the CD-ROM
Technical
Descriptions of Functions (see Section 1.5. Related documents) for more
information about the auto-reclosing function.
10.3.4. Protection signal routing
The settings for the protection signal routing can be implemented as described in
the first application example (see Section 9.1. Outgoing feeder, Basic B01).
10.3.5. Indication and control connections
The connections for indication and control can be implemented as described in first
application example (see Section 9.1. Outgoing feeder, Basic B01), except the
signals for the open and close buttons that in this example are disconnected to free
the digital inputs for other functionality. Local control can be executed via the HMI
according to the instructions in
REX 521 Operator’s Manual (see Section 1.5.
Related documents).