Rockwell Automation 1761-HHP-B30 MicroLogix 1000 with Hand-Held Programmer (HHP) - Manual (Page 35)

Chapter 2
Wiring Your Controller
2–5
!
ATTENTION: Calculate the maximum possible current in each
power and common wire. Observe all electrical codes dictating
the maximum current allowable for each wire size. Current
above the maximum ratings may cause wiring to overheat, which
can cause damage.
!
ATTENTION: United States Only: If the controller is installed
within a potentially hazardous environment, all wiring must
comply with the requirements stated in the National Electrical
Code 501-4 (b).
•
Allow for at least 50 mm (2 in.) between I/O wiring ducts or terminal
strips and the controller.
•
Route incoming power to the controller by a path separate from the
device wiring. Where paths must cross, their intersection should be
perpendicular.
Important: Do not run signal or communications wiring and power
wiring in the same conduit. Wires with different signal
characteristics should be routed by separate paths.
•
Separate wiring by signal type. Bundle wiring with similar electrical
characteristics together.
•
Separate input wiring from output wiring.
•
Label wiring to all devices in the system. Use tape, shrink-tubing, or
other dependable means for labeling purposes. In addition to labeling,
use colored insulation to identify wiring based on signal characteristics.
For example, you may use blue for dc wiring and red for ac wiring.