In this article we‘re going to make control configuration. Circuit breaker can be closed with control switch while opening of circuit breaker can be done in several ways: a) by using control switch b) by tripping of various protections. Configuration of control will be created in program unit „Control“. Variables of control will be connected to function block “COCB1”. More information about function block “COCB1” you can find in manufacturer‘s ABB manual COCB_ Circuit Breaker (2 state inputs 2 control inputs) 1MRS752348-MUM.

Binary input BIO1_5_BI7 will be used for closing command of circuit breaker, while binary input BIO1_5_BI8 will be used for opening command of circuit breaker. Tripping of CBFP protection will be activate binary output PS1_4_HSPO3.

Usually binary outputs PS1_4_HSPO1 and PS1_4_HSPO2 are used for controlling of circuit breaker because these outputs have close and trip circuits supervision mechanism. More detail about hardware (binary inputs and outputs, control of circuit breaker) of PLC REF543 you can read in manufacturer‘s ABB manual Feeder Terminal REF54_ Technical Reference Manual General 1MRS750527-MUM.

After configuring tripping of protection to binary outputs, we can test tripping times of protections.
Also to indicate tripping of binary outputs we will configure them to LEDs of PLC REF543:
a) fifth LED will indicate tripping of binary output PS1_4_HSPO2 (this LED we will indicate as „CloseCMD-PS1-4HSPO2“);
b) fourth LED will indicate tripping of binary output PS1_4_HSPO1 (this LED we will indicate as „TripPS1-4HSPO1“);
c) sixth LED will indicate tripping of binary output PS1_4_HSPO3 (this LED we will indicate as „CBFP-PS1-4HSPO3“);

In practical such indication is not used, because LEDs are used to indicate various failures, faults, alarms, tripping of automation signals.

We will also test protection using „Test mode“. By using „Test mode“ you don‘t need to use testing equipment. All protections are forced to trip manually.

1. Select project‘s object (in my case it is „IC-1“) and run „Relay Configuration Tool“ application:

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2. In project configuration tree select program unit “Control”. Open it:

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3. Connect reserved variables „TRUE“ to inputs of function block „COCB1“ as shown in picture:

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4. We use binary input BIO1_5_BI7 for closing of circuit breaker:

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Comment purpose of binary input BIO1_5_BI7:

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5. Connect already created variables „NOCHighTrip“, „NOCInstTrip“ and binary input BIO1_5_BI8 per logical block „OR“ to input „OPEN“ of function block „COCB1“:

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NOC3High variable:

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Variable of NOC3Inst with UV3Low blocking protection:

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BIO1_5_BI8 will be used for opening of circuit breaker:

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Comment purpose of binary input BIO1_5_BI8 :

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Now configuration looks like:

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6. Binary output PS1_4_HSPO1 will be used for opening of circuit breaker:

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Comment purpose of binary output PS1_4_HSPO1:

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7. Binary output PS1_4_HSPO2 will be used for closing of circuit breaker:

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Comment purpose of binary output PS1_4_HSPO2:

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Now control configuration of circuit breaker looks like:

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More information about function block “COCB1” you can find in manufacturer‘s ABB manual COCB_ Circuit Breaker (2 state inputs 2 control inputs) 1MRS752348-MUM.

8. Now we‘re going to connect tripping of CBFP protection to binary output PS1_4_HSPO3 of PLC REF543. Insert already created variable „NOCCBFP“:

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Connect it to binary output PS1_4_HSPO3:

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Control configuration of circuit breaker is complete:

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To close circuit breaker use binary output PS1_4_HSPO2, to open – use binary output PS1_4_HSPO1. Tripping of CBFP protection will activate binary output PS1_4_HSPO3.

By closing control switch per binary input BIO1_5_BI7 we‘ll close circuit breaker, by closing switch per per binary input BIO1_5_BI8 we‘ll open circuit breaker.

 

Save and exit program unit „Control“ by using „File>Save“ and „File>Exit“.

9. Now we‘re going to connect tripping of binary outputs to LEDs of PLC REF543.

Also to indicate tripping of binary outputs we will configure them to LEDs of PLC REF543:
d) fifth LED will indicate tripping of binary output PS1_4_HSPO2 (this LED we will indicate as „CloseCMD-PS1-4HSPO2“);
e) fourth LED will indicate tripping of binary output PS1_4_HSPO1 (this LED we will indicate as „TripPS1-4HSPO1“);
f) sixth LED will indicate tripping of binary output PS1_4_HSPO3 (this LED we will indicate as „CBFP-PS1-4HSPO3“);

In project‘s configuration tree select program unit „Signal“ and open it:

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10. Insert function block „MMIALAR4“:

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Connect binary output PS1_4_HSPO1 to function block „MMIALAR4“ as shown in picture:

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11. Connect binary output PS1_4_HSPO2 to function block „MMIALAR5“ as shown in picture:

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12. Binary output PS1_4_HSPO3 connect to function block „MMIALAR6“ as shown in picture:

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13. Save and exit program unit „Signal“ by using „File>Save“ and „File>Exit“.

 

14. Compile created configuration by using „MAKE>MAKE“:

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15. Exit from „Relay Configuration Tool“ application by using „File>Exit“:

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16. To indicate tripping of binary outputs we‘re going to connect them to LEDs:

a) tripping of binary output PS1_4_HSPO2 will activate fifth LED (his name will be „CloseCMD-PS1-4HSPO1“)

b) tripping of binary output PS1_4_HSPO1 will activate fourth LED (TripPS1-4HSPO1) c) tripping of binary output PS1_4_HSPO3 will activate sixth LED (CBFP-PS1-4HSPO3)

Select project‘s object (in my case it is „IC-1“) and run „Relay Mimic Editor“ application:

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17. In „Relay Mimic Editor“ window press button „Alarm LED Texts“:

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18. Identificate 4-th, 5-th and 6-th LEDS as shown in picture:

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19. Save and exit from „Relay Mimic Editor“ tool:

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Press „Yes“:

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Now we‘re going to download configuration and settings to PLC REF543.

20. Select project object (in my case „IC-1“) and in “Object Tool” window select “Relay Download tool” application. Open it:

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21. In “Relay Download tool” window select “Send” window. In „Configuration“ window select „Relay Configuration“, „Mimic Configuration“ and „Store+Reset after download“:

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22. Exit from „Relay Download Tool“ by using command „File>Exit“.

23. Select project object (in my case „IC-1“) and in “Object Tool” window select “Relay Setting tool” application. Open it:

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24. Press „Download“ button:

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In “Download” window select “All” option:

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25. After downloading settings of function blocks to PLC, we need to store these settings to EEPROM memory. Select “Transfers>Store”:

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26. Now we‘re going to test control configuration and tripping times of protections.

The principle scheme of testing:

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Now we‘re going to test closing command of circuit breaker with control switch (binary input BIO1_5_BI7).

27. Connect „+“ to terminal 10 of binary input BIO1_5_BI7 (see testing scheme).

 

On HMI of PLC REF543 we fix that circuit breaker is closed:

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By tripping of binary output PS1_4_HSPO2, the fifth LED (it‘s name is „CloseCMD-PS1-4HSPO1“) is activated. Data and time of event are indicated.

By pressing button „C“ we can reset events and LEDs.

 

 

Now we‘re going to use „TEST MODE“. In this mode you can force tripping of protection by manually. In this case you don‘t need to use testing equipment to test protections.

28. „NOC3High“ protection in „TEST MODE“.

The path to „NOC3High“ protection on HMI of PLC REF543. Select „Protection“ in „Main Menu“:

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Select „NOC3High“ protection:

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Select „Control setting“ in „NOC3High“ window:

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Select „Test Trip“:

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After selecting „TEST>TRIP“ press button „E“, type password „2“:

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In „TEST>TRIP“ submenu select „Activate“:

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Press button „E“.

By using button „to the left“ and „E“ return to „Event list“ window. Here we can fix tripping of protection „NOC3High“ (first LED) and tripping of binary output PS1_4HSPO1 (fourth LED).

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Every time when you‘re in „TEST MODE“ the green LED will begin to blink. This blinking LED warns you that the PLC REF543 is in „TEST MODE“.

The binary output PS1_4_HSPO1 will be activated always when protections „NOC3High“, „NOC3Inst“ will trip. Also the binary output PS1_4_HSPO1 will be activated when binary input BIO1_5_BI8 will be active (by using control switch to send command „Open circuit breaker“).

In „NOC3High>Control setting“ window select „Test>trip=Do not activate“:

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The green LED lit steady. Now I turned off „TEST MODE“.

29. „NOC3Inst“ protection in „TEST MODE“. Select „NOC3Inst>Control Setting“ and activate „Test>Trip“ (see particle 27 of this article).

On HMI we have:

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„NOC3Inst“ protection tripped, the second LED (indicated as „NOCInstTrip“) lit steady. Also the fourth LED lit steady indicating tripping of binary output PS1_4_HSPO1. As we know usually „NOC3Inst“ protection will trip only when protection „UV3Low“ is tripped. But in „TEST MODE“ we can manually force tripping of function block „NOC3Inst“. So in this case we don‘t need to activate protection UV3Low.

In „NOC3Inst>Control setting“ window turn off „TEST MODE“ by selecting „Test>trip=Do not activate“:

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The green LED lit steady. Now I turned off „TEST MODE“.

 

 

Now we‘re going to test command „Open circuit breaker“.

30.To binary input BIO1_5_BI8 inject „+“. The principle scheme is shown in picture:

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The fourth LED lit steady indicating that command „Open circuit breaker“ force to trip binary output PS1_4_HSPO1:

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Now we are going to test protection CBFP in „TEST MODE“.

31. We‘ll use protection „NOC3Inst“ to invoke CBFP protection. The essential condition after tripping of protection „NOC3Inst“, the circuit breaker should be closed:

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Select „NOC3Inst>>Control setting>Test CBFP=Activate“:

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On HMI of PLC REF543:

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The third LED (indicated as„NOCCBFP“) indicate tripping of protection CBFP. The sixth LED indicate tripping of binary output PS1_4_HSPO3. The configuration of CBFP protection is done correct.

In „NOC3Inst>Control setting“ window turn off „TEST MODE“ by selecting „Test>CBFP=Do not activate“.

We tested protections „NOC3Low“, „NOC3Inst“ and „CBFP“ in „TEST MODE“. Also controlling of circuit breaker works correct.

 

Now it is time to test tripping times of protections.

32. Testing of protection„NOC3High.
Settings: I=1xIn=1x5A=5A; t=0,05s
The testing principle scheme is the same as in particle 26 of this article.
Inject currents and voltages from testing equipment:
Ia=5,1A, Ib=5,1, Ic=5,1A; φa=0º, φb=240º, φc=120º
U12=100V, U23=100V, U31=100V; φa=0˚, φb=240˚, φc=120˚.

Tripping times of protection „NOC3High“: t1=0,055 s; t2=0,054 s; t3=0,06 s

Tripping times of „CBFP“ from „NOC3High“ protection: t1=0,251 s; t2=0,264 s; t3=0,260 s (in this case after tripping of protection „NOC3High“ the circuit breaker should be closed).

On HMI of PLC 543:

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In window „Measurement“:

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In events window:

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„NOC3High“ (first LED) and CBFP (third LED) protections tripped. Also tripped binary outputs PS1_4_HSPO1 and PS1_4_HSPO3.
33. Testing of protection „NOC3Inst“ with blocking of protection „UV3Low“.

Settings of protection „NOC3Inst“: I=1xIn=1x5A=5A; t=0,05s
Settings of protection „UV3Low“: U12=49V, U23=49V, U31=49V

 

The testing principle scheme is the same as in particle 26 of this article.

 

Inject currents and voltages from testing equipment:
Ia=4,1A, IB=4,1, Ic=4,1A; φa=0º, φb=240º, φc=120º
U12=49V, U23=49V, U31=49V; φa=0˚, φb=240˚, φc=120˚.

 

Tripping times of protection „NOC3Inst“: t1=0,06 s; t2=0,058 s; t3=0,062 s

Tripping times of „CBFP“ from „NOC3Inst“ protection: t1=0,251 s; t2=0,264 s; t3=0,260 s

On HMI of PLC REF543:

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In events window:

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„NOC3Inst“, „CBFP“ protections and binary outputs PS1_4_HSPO1, PS1_4_HSPO3 tripped.
On „Measurement“ window:

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The tripping times of protections are correct. That‘s all!

 

 

In the next article I‘ll show how to read events by using „Events Log Viewer“ tool.