Measuring And Control Connections - Allen-Bradley 857 Quick Start Manual

Measuring and Control
Connections
IMPORTANT Some cards configurations are optional
Allen-Bradley 857 Protection Relay is connected to the protected object
through these measuring and control connections.
IMPORTANT Settings that are associated with options or accessories, such as RTD
scanners require the option or accessory to be installed or connected before
being made available for configuration
The following terminal connections are shown in this quick start:
•
Terminal X1 Left Side on page 16
•
Terminal X1 Right Side on page 16
•
Terminal X2 on page 16
•
Terminal X3 on page 17
•
Terminal X7 on page 17
•
Terminal X8 Model 857-3C7 on page 18
•
Terminal X8 Model 857-3C8 on page 19
•
Terminal X6 on page 19
•
Terminal X6 with DI19/DI20 Option on page 20
Figure 3 - Example of Allen-Bradley 857 Back Panel Communication Connection
Communication Option 1
Rockwell Automation Publication 857-QS001B-EN-P - April 2017
Mounting and Wiring Instructions
Communication Option 2
Chapter 2
15