TOMATECH AUTOMATION
overtravel of X, Y, or Z.
2.3.1 Hardware overtravel protection
The stroke switches are fixed at the positive and negative maximum travel of the machine
X, Z, Y
axis respectively, they are connected by the following figure. And the BIT3 of bit
parameter No.172
must be set to 0. If the overtravel occurs, the stroke switch acts to makeTAC-1002T stop,
and the
emergency alarm is issued.
When the hardware overtravel occurs, there will be an “emergency stop” alarm
inTAC-1002T.
The steps to eliminate this alarm are: press the OVERTRAVEL button to switch to the
ALARM page,
view the alarm message, and reset the alarm and move the table reversely to detach the
stroke
switch (for positive overtravel, move negatively; vice versa) .
2.3.2 Software Overtravel Protection
When the Bit4 of bit parameter No.172 is set to 0, the software limit is active.
1. X, Z axis
The software strokes are set by data parameter No.045, No.046, they refer to the machine
coordinates. As follows figure shows, X, Z are the machine coordinate system axes;
No.045 is for X
axis positive and negative strokes, No.046 is for Z axis positive and negative strokes,
within the
broken line is the software stroke scope.
If the machine position (coordinate) exceeds the area within broken line, overtravel alarm
will be
issued. The steps to eliminate this alarm are: press the overtravel alarm release key to
clear the
Chapter 2 Power ON/OFF And Protection
207
Ⅱ Operation
alarm, then moves reversely (for positive overtravel, move out negatively; vice versa).
2. Additional axis
The stroke range setting is the same that of the basic axis. When the additional axis is
enabled,
No. 045, No.046 displays stroke range parameter of the corresponding additional axis.
2.4 Emergency Operation
During the machining, some unexpected incidents may occur because of the user
programming,
operation and product fault etc. So theTAC-1002T should be stopped immediately for
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