Rockwell Automation 1746-INT4 Thermocouple/mV Isolated Input Module Quick Start - Manual (Page 12)

12 Thermocouple/mV Isolated Input Module
Publication 1746-QS002B-EN-P - July 2002
7. At the source-end of cables from mV devices (see following figure):
•
remove the drain wire and foil shield
•
apply shrink wrap as an option
•
connect to mV devices keeping the leads short
Configure the Software
With your programming software already loaded and your computer set for off-line
programming:
1. Identify the type of SLC processor and operating sytstem on the PROG
DIRECTORY FOR PROCESSORS screen.
2. With the SLC system installed and wired, us the READ CONFIG feature and
follow the prompts to configure the I/O.
3. Enter the rack configuration.
4. Select the type of module in each slot. If 1746-INT4 is not listed, enter ID
code 3515 for OTHER at the bottom of the list.
5. Exit and save to file.
IMPORTANT IMPORTANT
If noise persists, try grounding the opposite end of the cable.
Ground one end only.
Wires
3/8
Make unshielded wires as
short as possible.
Limit braid length to 12” or
less. Solder braid to lug on
bottom row of I/O chassis
Connect I/O chassis
bolt to earth ground
Solder drain wires to
braid at casing.
Make unshielded wires as short as possible.
3/8
Signal
Wires
Terminal Block
Chnl 0
Chnl 1
Chnl 2
Chnl 3
n/c
Cables