Rockwell Automation 1762-IT4 Thermocouple/mV Input Module - Manual (Page 23)

Publication 1762-UM002A-EN-P - July 2002
Installation and Wiring 2-7
System Assembly The expansion I/O module is attached to the controller or another I/O
module by means of a ribbon cable after mounting as shown below.
Field Wiring Connections General
•
Power and input wiring must be in accordance with Class 1,
Division 2 wiring methods, Article 501-4(b) of the National
Electric Code, NFPA 70, and in accordance with the authority
having jurisdiction.
•
Channels are isolated from one another by ±10 Vdc maximum.
•
If multiple power supplies are used with analog millivolt inputs,
the power supply commons must be connected.
TIP
Use the pull loop on the connector to disconnect
modules. Do not pull on the ribbon cable.
ATTENTION
!
EXPLOSION HAZARD
•
In Class I, Division 2 applications, the bus
connector must be fully seated and the bus
connector cover must be snapped in place.
•
In Class I, Division 2 applications, all modules
must be mounted in direct contact with each
other as shown on page 2-5. If DIN rail
mounting is used, an end stop must be installed
ahead of the controller and after the last 1762
I/O module.