Rockwell Automation 1747-L5xx SLC 500 Modular Hardware Style User Manual - Manual (Page 36)

Publication 1747-UM011G-EN-P - June 2008
36 Selecting Your Hardware Components
Selecting Discrete I/O
Modules There are three types of discrete I/O modules: input, output, and
combination. They are available in a wide variety of densities
including 4, 8, 16, and 32 point and can interface to ac, dc, and TTL
voltage levels. Output modules are available with solid-state ac,
solid-state dc, and relay contact type outputs.
For a complete listing of discrete I/O modules and specifications,
contact your Allen-Bradley sales office for the latest selection guide,
publication 1747-SG001.
Selecting Specialty I/O
Modules The SLC 500 family offers specialty I/O modules that enhance your
control system. Modules range in function from analog interface to
motion control, from communication to high-speed counting.
For a complete listing of specialty I/O modules and their
specifications, contact your Allen-Bradley sales office for the latest
selection guide, 1747-SG001.
Selecting Power Supplies To select a power supply, you need:
• power supply specifications.
• power supply worksheet, one for each chassis.
• SLC 500 Systems Selection Guide, publication 1747-SG001.
When configuring a modular system, you must have a power supply
for each chassis. Careful system configuration will result in the best
performance. Excessive loading of the power supply outputs can
cause a power supply shutdown or premature failure.
There are three different ac power supplies and four dc power
supplies. For ac power supplies, the 120/240V selection is made by a
jumper. Place the jumper to match the input voltage.
SLC power supplies have an status indicator that illuminates when the
power supply is functioning properly.
ATTENTION
Ensure that the power supply jumper is in the correct position
before supplying power to the SLC 500 system or personal
injury or damage to the system may result.