Allen-Bradley 857-RAA, User Manual

Page: 9 / 42

Rockwell Automation Publication 857-UM002C-EN-P - February 2018 9
Layout Chapter 1
Figure 3 - 857-RAD RTD Scanner with mA inputs/outputs
1. Grounded metal enclosure
2. Glass Fiber Rx communication
3. Glass Fiber Tx communication
4. Not used on this model
5. Not used on this model
6. Address DIP switch
7. RTD inputs (12 channels, 3-wire conn shield / channel)
8. Power connector and earthing connection
9. PTC input (2-wire connection)
10. Four mA inputs / four mA outputs (2-wire connection /channel)
11. DIN Rail mounting