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Emerson L20 - Before Operating the Unit

Emerson L20
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38 DCM00002 REV. 16
5.1 Before Operating the Unit
Before attempting to operate the controller, make sure you have reviewed the entire
manual and have an understanding of safety procedures. Check that connections between
the controller and actuator are as shown in the Hookup Diagram provided in Special
Information Instruction Set. The power button on the front of the system may then be
used to turn the system on.
Do not operate the Touchscreen Controller with the cover removed
To prevent the possibility of electric shock, always plug the Touchscreen Controller into a
grounded power source
Do not cycle the welding system if either the RF cable or the converter is disconnected. High
voltage could be present at open power connections
Ensure power switch is in the OFF position before making or breaking any electrical or pneumatic
connections to the Touchscreen Controller and/or Welder
Do not touch Ultrasonic Horn during or immediately following the welding cycle. Vibrations and
heat can burn skin
When operating the controller keep clear of the actuator moving parts
If power is removed from the system while the controller is on, it will be necessary to press the
power button to its off position and then once again to its on position in order to restore power to
the system
Interactive user screens supply a means of function selection and data entry for setting up
the controller. The following pages provide illustrations, function descriptions and screen
navigation instructions.
In the event of a system fault or an improper keyed entry, the controller will provide an
instructional prompt screen in order to remedy the condition.
Controller User Screen Hierarchy:
A drawing included in the Special information Instruction Set provides an overview of the
controller user screens and functions shown in tree structure. It serves as a useful tool for
navigating the command structure of the controller.
WARNING High Voltage Hazard
High voltage might be present in the Branson Touchscreen Controller
(Touchscreen). When setting up and operating the welding system,
observe the potential hazards listed below.

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