AB Quality MicroLogix 1200 Installationsanleitung Seite 14

14 MicroLogix™ 1200 Programmable Controllers
Spade Lug Recommendation
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 the
following spade lugs. The terminals will accept 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.
When using spade lugs, use a small, flat-blade screwdriver to pry the
finger-safe cover from the terminal blocks. Then loosen the terminal screw.
NOTE
Surge Suppression
ATTENTION
!
Publication 1762-IN006C-MU-P
If you wire the terminal block with the finger-safe cover
removed, you may not be able to put it back on the
terminal block if the wires are in the way.
Inductive load devices such as motor starters and
solenoids require the use of some type of surge
suppression to protect the controller output. Switching
inductive loads without surge suppression can
significantly reduce the life of relay contacts or damage
transistor outputs. By using suppression, you also reduce
the effects of voltage transients caused by interrupting the
current to that inductive device, and prevent electrical
noise from radiating into system wiring. Refer to the
MicroLogix 1200 Programmable Controller User Manual,
publication 1762-UM001A-US-P, for more information on
surge suppression.
Finger-safe cover