Standalone Architecture

Introduction

When the intelligent modular units are not communicating to communication interfaces (IFE, EIFE, or IFM interfaces, or BSCM Modbus SL/ULP module with Modbus SL hub), the architecture is classified as standalone.

Standalone Architecture

The following figure shows an example of a standalone architecture with IMUs consisting of an FDM121 front display module for one circuit breaker or an IO input/output application module for one circuit breaker and a compatible circuit breaker equipped with a MicroLogic trip unit.

The IMUs do not communicate to communication interfaces and do not therefore include an IFE or IFM interface. Power the IMUs by using an external power supply connected to the FDM121 display.

A	IO module
B	24 Vdc AD power supply for MicroLogic trip units in MasterPacT NT/NW, ComPacT NS, or PowerPacT P- and R-frame circuit breakers
C	24 Vdc ABL8 power supply for ULP modules
D	Circuit breaker BCM ULP cord
E	NSX cord
F	FDM121 display
G	ULP line termination

Cable	Description
	ULP network
	24 Vdc power supply

For FDM121 display mounting options, refer to QGH80971 Enerlin’X FDM121 - Front Display Module for One Circuit Breaker - Instruction Sheet.

The 24 Vdc power supply is selected from the list of recommended 24 Vdc power supplies. The power supply rating must be selected according to IMU consumption.