Allen-Bradley MicroLogix 1200 User Manual page 38

3-2 Wiring Your Controller
Publication 1762-UM001D-EN-P - March 2004
Do not run signal or communications wiring and
TIP
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.
Table 3.1 Wire Requirements
Wire Type
Solid Cu-90°C (194°F)
Stranded Cu-90°C (194°F)
Wiring torque = 0.791 Nm (7 in-lb) rated
Wiring without Spade Lugs
When wiring without spade lugs, it is recommended to keep the
finger-safe covers in place. Loosen the terminal screw and route the
wires through the opening in the finger-safe cover. Tighten the
terminal screw making sure the pressure plate secures the wire.
Wiring with Spade Lugs
The diameter of the terminal screw head is 5.5 mm (0.220 in.). The
input and output terminals of the MicroLogix 1200 controller are
designed for a 6.35mm (0.25 in.) wide spade (standard for #6 screw
for up to 14 AWG) or a 4 mm (metric #4) fork terminal.
Wire Size (2 wire maximum per terminal screw)
#14 to #22 AWG
#16 to #22 AWG
Finger-Safe Cover