Tweco 100XL Plus CE PAK Master - Manuel (Page 24)

INSTALLATION 3-8 Manual 0-2813
3.09 Tip Saver/Drag Cut Sensing
Circuit
This power supply is equipped with a Tip Saver/Drag
Cut Sensing Circuit which cuts current back to 35 amps if
the tip touches the workpiece. The purpose of this is to
prolong the life of the tip.
If the user does not want the current to be decreased when
the tip touches the workpiece, the sensing circuit can be
defeated by closing switch SW1-1 on the Gate/Logic PC
Board. Slide top white toggle on SW1-1 to the right to
close circuit.
A-02569
Gate/Logic PC Board
SW1
1 2
ON
Figure 3-6 SW1 Switch Location
WARNING
Tip life will be considerably shortened if tip is
repeatedly touched to the workpiece without the
Tip Saver/Drag Sensing Circuit feature active.
3.10 External Control Connections
External control signal connections can be made to the Rear
Panel of the power supply. Connections can be made to inter-
face with CNC Controls, Standoff Control SC11 or Remote Hand
Pendant.
Depending on the option installed determines how the option
is connected to the Power Supply.
A. Computer Control Interface (CNC)
NOTE
Used when Standoff Control SC11 are not used.
The computer control interface (CNC) allows an automated sys-
tem to interface with a computer or other control device.
CNC cables can be interfaced to the Power Supply using one of
the following methods:
NOTE
Refer to Appendix III for CNC Interface Schematic.
• Connector (J22) at the rear of the Power Supply
• Internal terminal block in the Power Supply
Depending on the equipment ordered and the cables supplied
connect the CNC cable per one of the following:
1. Using supplied CNC cable
Connect the supplied Power Supply/CNC Cable to the Power
Supply rear panel connector J22 (CNC Control).
2. Using customer supplied CNC Cable
a. Remove the Left Side Panel from the Power Supply
as viewed from the front of the unit.
b. Remove the 7/8" knockout from the Rear Panel and
install a 1/2" NPT strain relief (not supplied) into
the hole.