Building Object Tree In Sab600 Of Three Ref615S - ABB COM600 3.4 User Manual

4.2.
32
Station Automation COM600 3.4
Logic Processor User's Manual
1. Each REF615 has a breaker failure protection. Each REF615 uses DNP 3.0.
2. Assume there is a fault F1 on Feeder #1.
3. Normally, REF615 protecting Feeder #1 should detect the fault and send an
OPEN/Trip command to Bkr-2.
4. Assume there is a problem in Bkr-2 (mechanical) and breaker 2 cannot open.
5. The breaker failure protective element issues a signal "Breaker 2 failed".
6. COM600 scans each relay and as soon as it notices a failure operated from breaker
2, it sends a TRIP/OPEN command to Breaker 1 (Bkr-1) and Breaker 3 (Bkr-3). It
is assumed that sources are connected via Bkr-1 and Bkr-3, so both will feed a fault
F1.
7. COM600 permanently sends a TRIP signal to Bkr-1 and Bkr-3 until it receives a
Reset signal. Assume that an external Reset signal is connected to REF615 on Bkr-
1 as a binary input. Energizing that binary input, COM600 resets output TRIP signals
that are sent to Bkr-1 and Bkr-3.

Building object tree in SAB600 of three REF615s

To build the object tree:
1. In the communication structure under the Gateway object, add a DNP LAN OPC
Server.
2. Under DNP LAN OPC Server, add three DNP LAN Channels.
3. Under channels, add DNP IEDs for the three REF615s.
1MRS756738