Head Movement Monitoring And Control; Preset Switch; Table 5-1 Head Movement Monitoring And Control Switches - Honeywell Precision Platform 4022 Series System Manual

Precision Platform 4022 Series Scanner Components
5.2.4.1.
5.2.4.2.
p/n 6510020208

Head movement monitoring and control

The scanner is equipped with various switches that monitor and control
head movement. Table 5-1 lists the switches and their functions. These
switches are mounted to the upper and lower beams.

Table 5-1 Head Movement Monitoring and Control Switches

Switch
Provides a permanent fixed reference to the motor
Preset controller software to update the head position. Identifies
approximate mid-beam position of head movement.
Alerts you if a head exceeds the horizontal-movement
Limit limit. The heads should not come within approximately
14.0 in (355.6 mm) of the cable or motor end supports.
Stops all scanning and alerts the computer that a head
Crash has passed a limit switch and come within approximately
12 in (304.8 mm) of the end supports.
Disables the scanning motor controller and disables
Emergency
sensor activation (where applicable) when pushed by an
Stop (E-Stop)
operator.
The preset and limit switches are mounted on rails on the bottom flange of
the upper beam. The crash switches are clamped to the upper fiberglass
head carriage tracks at each end of the scanner. The Emergency Stop (or E-
Stop) switches are on the end support doors at each end of the scanner.

Preset switch

The preset switch provides a reference for head position to either the Frame
Controller Interface board located in the 4604-02 PMP (4022-31, 4022-40
scanners) or the QSIB card in the MXOpen Quality Manager (4022-30). The
preset switch is located mid-scanner on the upper beam. When the heads
pass above it, the preset switch is activated by magnets in the head carriage,
and a signal is sent to either the Frame Controller Interface board or the
QSIB.
The preset switch signal is used by the either the Frame Controller Interface
board electronics or the MXOpen electronics to update the head position
counter. This synchronization of switch position and known head position
ensures precise information for scanning measurements.
Function
10/4/07
Precision Platform 4022 scanner frame
5-9