Adding Pou To Application Maintask - ABB COM600 series 5.1 User Manual

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COM600 series 5.1
Logic Processor User's Manual
Figure 4.4-6 Failure Protection Logic
In this Function Block Diagram, the first row is to catch the rising edge of breaker 2
failure and check Reset signals.
The second and third row are to generate an On/Off square wave (Tripping signal) from
a break failure status by using Timer Pulse, Timer and XOR gate function blocks.
The last row is to send generated Tripping signal to open the breakers. A Timer Delay
is added between the Select Off and Operator outputs to make sure it is a Select/Operate
operation.
When it receives a Reset signal, the logic sets all signals to Off and stops sending trip
signal to IEDs.

Adding POU to Application MainTask

To add the PLC_Breaker Failure POU to MainTask:
1. Remove the default PLC_PRG from under Application tree by right-clicking it and
selecting Delete.
2. Expand the Task Configuration under Application Tree. Double-click MainTask
to open the MainTask Editor.
3. In the MainTask Editor, select PLC_PRG POU and click Remove Call. PLC_PRG
POU is removed from MainTask.
4. Click Add Call and select PLC_BreakerFailureProtection POU to add it to Logic
Processor Main Task list.
1MRS756738
Logic_trip.bmp