Inhibit Optional Protection
Presentation
The inhibit optional protection function is compatible only with MasterPacT MTZ circuit breaker.
The function is used to inhibit the following optional protection functions of the MicroLogic X control unit:
-
Undervoltage protections ANSI 27-1 and ANSI 27-2
-
Overvoltage protections ANSI 59-1 and ANSI 59-2
-
Reverse active power protection ANSI 32P
-
Underfrequency protection ANSI 81U
-
Overfrequency protection ANSI 81O
-
IDMTL overcurrent protection ANSI 51
-
Directional overcurrent protection ANSI 67
The function inhibits the MicroLogic X optional protection functions with their inhibition parameter set to ON. For more information, refer to the MasterPacT MTZ MicroLogic X Control Unit - User Guide.
The digital input used to inhibit the MicroLogic X optional protection functions can be assigned using the EcoStruxure Power Commission software.
Compatible Devices
|
Range |
Minimum Hardware Configuration Required |
|---|---|
|
MasterPacT MTZ circuit breaker |
Fixed or drawout circuit breaker + MicroLogic X control unit with optional protection Digital Modules installed + ULP port module |
Input/Output Assignments
The table below lists the possible assignment of the digital inputs and outputs according to the predefined application selected on the IO module:
|
Inputs |
Predefined Application Selected |
||||||||
|---|---|---|---|---|---|---|---|---|---|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
|
|
Enable or Disable inhibition of the optional protections
|
I4–I6 |
– |
I6 |
I3–I6 |
– |
– |
– |
– |
I1–I6 |