Table of Contents
Advertisement
16
Install and Wire the Modules
Considerations When
Wiring
Publication 1746-UM009B-EN-P - September 2007
This section provides guidelines on wiring the system, grounding the
cables, determining cable length.
Before wiring the module, disconnect SLC system power, I/O
ATTENTION
rack power, and module power.
System Wiring Guidelines
Use the following guidelines in planning the system wiring to the
module.
• Analog common terminals (ANL COM) are electrically
interconnected inside the module, but not internally connected
to earth.
• Voltages on IN+ and IN– terminals must be within 0...20V with
respect to ANL COM to ensure proper input channel operation.
This is true for current and voltage input channel operation.
• Voltage outputs (OUT 0 and OUT 1) of the 1746-FIO4V module
are referenced to ANL COM. Load resistance (R1) for a voltage
output channel must be equal to or greater than 1 KΩ.
• Current output channels (OUT 0 and OUT 1) of the 1746-FIO4I
module source current that returns to ANL COM. Load resistance
(R1) for a current output channel must be within 0...500 Ω.
• Input connections for single-ended or differential input are the
same.
Advertisement
Table of Contents
