3M Matic 7000r Instructions And Parts List page 48

8. Theory of Operation
Figure 8-15
Sensor Beam
Absorption
(Hidden
8.4 Tape Application Monitor (TAM) Sensors (Optional)
If a TAM is installed, two (2) photo sensors are installed on the Tape Application Monitor
(TAM) Bracket. These sensors are located in close proximity to each taping head to be
monitored and are pre-set at the factory. Both the Tape Dispensing/Application and
Low Tape Sensors can be adjusted to meet production needs.
Tape Dispensing Sensor and Sensor Absorption Pad (Figures 8-13, 8-14, and 8-15):
The fi rst sensor is a Tape Dispensing Monitor (d) that sends a pulsing signal as tape is
being dispensed. This pulse is created by the sensor beam directed at and passing through
openings in the wheel/hub as it is engaged with the one way tension roller located on
the taping head. The pulses are counted and registered from the time the taping cycle
begins as the box is introduced at Box Present Sensor (a) and the trailing end of the box
passes sensor(s) (b) and (c). During proper tape application, both the wheel and roller
turn and send pulses as tape is being applied. Fault signals occur (and taping process is stopped)
when expected pulse values do not meet expectations of a predetermined fault condition.
As explained above, the Tape Dispensing/Application Sensor beam (directed at the
taping wheel/hub) passes through openings in the wheel and a pulse signal is sent that
tape is being dispensed. If the LED on the sensor body cycles on and off as tape is
applied, no adjustment is necessary. However, if the LED indicator is not switching on
and off as tape is dispensed -
Re-Position the Tape Dispensing Sensor:
Re-adjust Tape Dispensing Sensor until LED properly switches on and off (Figure 8-15).
Note: A Sensor Absorption Pad (Figure 8-15) is attached to the inside of the column.
3M-Matic 7000r-7000r3 HS Pro - Type 11800
™
Page 36
44-0009-2152-6 / ECO# 0078045
Pad
View)
1). Loosen the sensor nut
2). Slide/Reposition sensor along the bracket slot
3). Tighten the sensor nut.
This Pad reduces "bounce-back" that may create a false tape dispensing fault signal.
Tape Low Tape
Sensor
Drum Sensor (e)
Nut
Sensor
Adjust
Slot
Sensor
Adjust
Slot
(TAM Sensors continued on next page)
Sensor
Nut
Tape
Dispensing
Sensor (d)
North American - ENG
Date Released:
05-22-18