36 Rockwell Automation Publication 5069-UM004A-EN-P - April 2019
Chapter 1 Digital Module Operation in a Control System
Figure 8 shows a CompactLogix 5380 system that includes a field potential
distributor. In this example, the field potential distributer is required to isolate
DC-type modules from AC-type modules.
Figure 8 - CompactLogix 5380 Controller System with 5069-FPD Field Potential Distributor
DC INPUT
5069-IB16
DC INPUT
5069-IB16
DC OUTPUT
5069-OB16
DC OUTPUT
5069-OB16
5069-FPD
FIELD POWER
SA Power MOD Power
5069-FPD Field Potential Distributor
SA Power Bus Providing DC Power SA Power Bus Providing AC Power
IMPORTANT You must install DC-type modules and AC-type modules on separate SA
Power buses.
You use 5069-FPD field potential distributors to establish SA Power
buses that are separate from the SA Power bus that the controller or
adapter establishes.
To install modules on separate SA Power buses, complete the
following steps.
1. Install the controller or adapter.
The controller or adapter establishes the first SA Power bus.
2. Install one type of modules to the right of the controller or adapter, for
example, DC-type modules.
3. Install a 5069-FPD field potential distributor.
The field potential distributor establishes a new SA Power bus that is
isolated from the first one.
4. Install the other type of modules to the right of the field potential
distributor, for example, AC-type modules.
Additional requirements apply when you use a 5069-FPD field potential
distributor in a local or remote system with Compact 5000 I/O
safety modules.
For more information on the additional requirements, see
Power
Requirements When You Use Compact 5000 I/O Safety Modules on page 37.
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