Introduction

This bulletin explains how to install and set up the secondary address selector (part number NFSELG3), which is used to indicate the address of secondary panelboards in a Powerlink subnetwork.

How Addressing Works

The Powerlink subnetwork may contain one primary panelboard and up to seven secondary panelboards. The primary panelboards contain the controller and power supply. The secondary panelboards receive control signals and control power through the subnet connection to the primary panelboard. A simple Powerlink system is illustrated in Figure 1.

NOTE: A single controller can support up to eight control busses if each bus has an individual address (one bus per panel) or sixteen busses if each panel has two busses.. In the scenario, the primary panelboard would not have a control bus and each secondary panelboard would have a single control bus.

NOTE: The secondary address selector is required only on panelboards that do not have a power supply and controller.

Typical Powerlink System Subnetwork

If a control bus is connected to either the controller or power supply, the primary panelboard on the subnetwork is automatically assigned address 0 (zero). Each secondary panelboard on the subnetwork must have a unique address. The secondary address selector installed in each secondary panelboard is used to assign an address (0–7) to the secondary panelboard.

NOTE: Do not use address 0 unless the controller and power supply are mounted in a panelboard without control busses.