Wiring The Analog Module - Allen-Bradley SLC 500 1746-NI4 Installation Instruction

Wiring the Analog Module

After the analog module is properly installed in the chassis, use the following
wiring procedure. Belden cable #8761 is recommended when wiring analog
modules. This section assumes that you have properly installed the analog
module.
ATTENTION
!
To wire your analog module, follow these steps and refer to the illustrations on
page 14.
1. Designate the end of the cable where the drain wire and foil shield is earth
grounded as END 1. Designate the other end as END 2.
2. At each end of the cable, strip some casing to expose the individual wires.
3. Trim the signal wires to 50 mm (2 inch) lengths. Strip 5 mm (about 3/16 inch)
of insulation away to expose the end of the wire.
4. At END 1, twist the drain wire and foil shield together, bend them away from
the cable, and apply shrink wrap.
5. At END 2, cut the drain wire and foil shield back to the cable and apply shrink
wrap.
6. Connect the signal wires (black and clear) to the terminal block and the input
and output devices. The recommended maximum torque is 0.57 Nm (5 lb-in)
for all terminals.
• Input channels - connect END 1 at module. Use a chassis mounting tab
as a ground for the drain wire and foil shield.
• Output channel- connect END 2 at the module. Ground the drain wire
and foil shield at the analog load.
7. Repeat steps 1 through 6 for each channel on the analog module. Jumper the
unused plus (+), minus (-) and common terminals of each input channel
individually. Unused output and common terminals should be left
unconnected.
The following illustrations depict the proper cable preparation for END 1 and
END 2. Shrink wrap is applied to each cable end. Make sure the foil shield and
drain wires on END 1 are long enough to reach their designated earth ground
points.
Before wiring any analog module, disconnect power from the
SLC 500 system and from any other source to the analog
module.
SLC 500™ Analog I/O Modules
Publication 1746-IN008A-US-P
15