61
TRAK Machine Tools
Southwestern Industries, Inc.
TRAK TMC Mills with ProtoTRAK RMX CNC Safety, Installation, Maintenance, Service & Parts List
4.4.2
ATC Counter Sensor
Consists
of a proximity switch, and cam with a window. One rotation of the cam represents one station
index. When the cam is in the home position, the proximity switch recognizes it and illuminates an amber
LED. Once the cam has rotated and the sensor recognizes the window, the logic waits for the cam to
once again be recognized. Once recognized, a timer begins, and for a calculated amount of time, the
motor continues to drive until home position is reached. It is critical that the cam be oriented as shown in
figure 4.4.2. This puts the locking segment in the optimum position. The sensor should be positioned in
the center of black bracket you see in figure 4.4.2. It is critical to keep this mechanism clean for trouble
free operation.
Figure 4.4.2
4.4.3
ATC Tool Detect Sensor
The tool detect sensor is used as the name suggests, to detect whether a tool is present in the tool
carousel at the tool change position. If a tool change was attempted with a tool in the spindle and in the
tool change position in the carousel a crash would occur.
If the tool detect sensor detects a tool that is not present, check the sensor lens for contamination.
Debris on the lens can cause a false detection of a tool.
The Tool detect sensor is an
optical type sensor, it sends out a “fan” beam that can set as vertical,
horizontal or anywhere in between. The sensor must be set to send out a vertical beam.
Failure to do so runs the risk of the sensor picking up parts of the tool changer other than the tool holder
itself.
The tool detect sensor uses LED’s
that change color, green LED indicates no tool is present, and
orange LED indicates that a tool is present
. These LED’s can be found on the underside of the barrel of
the tool detect sensor when it is mounted properly. The front of the sensor should be mounted
approximately one inch from the sensor bracket. To set the intensity of the tool detect sensor start with a
tool in the carousel in front of the sensor, adjust the pot on the sensor counterclockwise until the LED
