Wulftec / M.J. Maillis Group
Page 26 of 36
Version 1.7.1 /November 2014
Setting Wrap Parameters (cont’d)
Proximity Sensor
The first sensor is located beside the rotary arm
ring gear and is used to count the rotary arm
revolutions (to match the wrap counts selected
on the panel). The reading is obtained by a flat
piece of steel glued on the ring gear. The second
sensor is used to indicate home position to cut
film and also, because the WCRT series uses
two (2) counts per rotary arm revolution, to give
the second count required.
Figure 8 Proximity Sensor
Revolution and Home Position Sensors
Wrappers from Wulftec use
proximity sensor
to count revolutions and to determine the arm’s home
position. These two (2) sensors can be found on the top of the ring gear and they are reading off a
piece of steel glued on the top of the ring gear.
Reed Switches Adjustment
These switches indicate the push arm’s initial and limit position. Red light at the end of the arm
should be
on
when it arrives in its initial position or to its limit.
