Surge suppression – Rockwell Automation 1763-L16xxx MicroLogix 1100 Programmable Controllers Installation Instructions User Manual

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Publication 1763-IN001B-EN-P - September 2007

2. Insert it into an open clamp.

3. Using a small, flat-blade screwdriver, tighten the terminal screw. To ensure

that the wire conductor is secured inside the clamp, tighten it to the rated
torque, 0.56 Nm (5.0 in-lb).

The diameter of the terminal screw head is 5.5 mm (0.220 in.).

Surge Suppression

ATTENTION

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
1100 Programmable Controller User Manual, publication 1763-UM001, for more
information on surge suppression.

Screw-cage clamp terminal block

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