Rockwell Automation 1395 Discrete Adapter, Rev 3.XX-8.XX - Manual (Page 7)

2 Chapter
2-1
Hardware Description
Chapter Objective
Chapter 2 contains a general description of the major hardware components
of the Discrete Adapter Board. It is not intended to be an all encompassing
technical description of each hardware component. This chapter provides
basic information to help you:
S Identify the discrete board input configuration.
S Understand the hardware requirements necessary to interface the
Discrete board with peripheral devices.
The Discrete Adapter Board connects directly to the Main Control Board
using either Port A or Port B of the Microbus Interface. This interface
supplies the Adapter Board with all logic voltages and communication
capabilities. All user connections to the board are made at Terminal Block
TB-3 located at the bottom of the 1395 Drive.
Digital Inputs
The Discrete Adapter Board contains four programmable discrete inputs.
The two standard configurations allow for either 120V AC signals or
24V DC signals. These optically coupled inputs provide a means for
external control of the 1395 via pushbuttons, relays, switches, etc. Digital
Input 1 is typically operated from a Normally closed device, while Digital
Inputs 2 through 4 are typically operated from Normally open devices.
Terminal Block TB-3 is used to make the external connections.
S TB3-47 Input Common
S TB3-48 Digital Input 1
S TB3-49 Digital Input 2
S TB3-50 Digital Input 3
S TB3-51 Digital Input 4
Digital Outputs
Two programmable discrete outputs are provided through control of two
on-board relays. Connector J3 is used to make the external connections to
the normally open contacts. The contact rating is 0.6A at 125V AC and
2.0A at 30V DC. These outputs allow the 1395 to signal various operating
states of the Drive.
S TB3- 45, 46 Digital Output 1
S TB3-43, 44 Digital Output 2