
57
Southwestern Industries, Inc.
TRAK
2
OP
M11 Installation, Maintenance, Service, & Part List Manual
The computer module contains one Handwheel port that is used to move each axes, it is also
used for spindle override, feedrate override, scrolling on certain screens and for TRAKing. The
signals that are used on the Handwheel port are CHA and CHB signals for the encoder input.
They are 5 Volt digital signals.
Figure 5.3c1
–
EHW Port Pin Assignments
The Overlay Power Connector (see figure 5.3b) is used to provide power to the programming
panel and it also carriers some critical overlay key feedback to the computer module. The
following are the signals that are carried inside the Overlay Power connector.
1.
5V is the 5 Volt DC power signal used to power up the Overlay Interface Board.
2.
12V is the 12 Volt DC power signal used to power up the LCD controller board.
3.
KEY-COM is a 24 Volt DC power signal used for triggering the critical overlay keys.
4.
ON-KEY is a 24 Volt DC digital signal that is used to command the spindle motor to turn
on.
5.
OFF-KEY is a 24 Volt DC digital signal that is used to command the spindle motor to stop
spinning.
6.
GO-KEY is a 24 Volt DC digital signal that is used to command the machine to start an
automatic process like a Homing or run a program.
7.
STOP-KEY is a 24 Volt DC digital signal that is used to command the machine to stop the
axis while in an automatic process.
8.
AUX is a 24 Volt DC digital signal that is used to turn the coolant pump on.
Figure 5.3d
–
Overlay Power Connector Pin Assignments
The IDE flash is a minimum of 1GB in size. The IDE flash stores the main operating system and
software used to control the machine. The configurations for the machine are also stored on the
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