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DBA LaneWalker Model C Operating Manual
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Page 41
4. Cord Holder Shut-Down Switches
There are two microswitches, one on each side of the LaneWalker, which the
cord-holder rests upon. These are the cord-holder shut-down switches. Unlike
most miniature switches which are “normally open” or “normally closed” to determine
their function, these switches function differently. The PC recognizes the
LaneWalker as ready for operation as long as one switch is actuated and the other
is not. Should both be actuated at the same time, the LaneWalker will not operate.
Once the LaneWalker has begun operation, if one switch actuates, the
machine will go into interlock and shut-down until that switch is returned to the
operating position again.
5. On The Lane Switch
The On The Lane Switch is mounted to the right lane distance pillow block.
As the LaneWalker sets down on the lane at the foul line, the lane distance shaft
begins to turn and actuates the on the lane switch. This switch sends a signal to
input #006 on the PC. Upon receiving this signal from input #006 the PC will accept
two counts from input #014 and the LaneWalker will switch from low to high speed
for its travel down the lane.
6. Wind Up Microswitch
The Wind Up microswitches are mounted on both sides of the duster side
plates. These two switches signal the PC that the DMR duster assembly is
functioning correctly.
The time that the duster will unwind is indicated at the PRESENT DUSTER
UNWIND TIME screen. This value allows the motor to unwind enough cloth so the
cushion roller rests on the lane surface. At the end of the conditioning run the cloth
will wind-up, lifting the cloth and cushion roller off the lane.
As the cloth is wound up the duster pivot arm is pulled tight against the wind-
up microswitch. The wind-up switch sends a signal to the PC input #010, this turns
output #210 off and the wind-up motor stops. If the PC does not receive a signal
from input #010 within 5 seconds of output #210 being turned on, the machine will
stop on the lane and Error Message #10 will be displayed.