Indication And Control Connections - ABB REX 521 Technical Reference Manual, Standard Configurations

REX 521
9.1.4.2.
140
Protection Relay
Technical Reference Manual, Standard Configurations
Using Graphical I/O Setting Tool
To change settings for Trip 1, go to the Output Matrix. Route the Trip 1 signals
to HSPO1 with a mouse-click in the graphical matrix.
There are three connection options for each signal: "Not connected", "Connected
and non-latched" and "Connected and latched". You can change the connection
option by clicking the symbol with the mouse (see Fig. 9.1.4.1.-2).
Finally, the new setting has to be sent to the relay by using the Download
For more information about the tool, refer to
Guide (see Section 1.5. Related documents).
Fig. 9.1.4.1.-2 Setting Trip 1 signal in the Graphical I/O Setting Tool

Indication and control connections

The output signals can be routed to any of the output relays and in this example the
circuit breaker close-signal is connected to the power output 3, PO3 (X4.1.17/18).
The status indications from the circuit breaker can also be connected to any of the
digital inputs DI1...DI9. In this example DI1 (X4.2.5/6), has been used for open
indication and DI2 (X4.2.6/7), for close indication, mainly because these two inputs
have a common ground.
The close signal can be connected to the output relay PO3 like this. In
Main menu\Configuration\Output Signals\, scroll down to the PO3
output and select the close signal.
1MRS751802-MUM
Tools for Relays and Terminals User's
button.