Nexen TL50A/4-E 803017 - Manual (Page 9)

9 FORM NO. L-21174-E-1209
The Ball and Detent design on Nexen’s Torque Limiters
ensure that each unit will reset in the same position when
the Torque Limiter engages. They will also deliver the same
torque in either direction of rotation.
NOTE: Machine must come to a complete stop before
Torque Limiter can be reengaged.
L E D O M S D E E P S G N I T A R E P O M U M I X A M
2 / E - A 0 2 L T , E - A 0 2 L T M P R 0 5 6 1
2 / E - A 0 3 L T , E - A 0 3 L T M P R 0 5 3 1
2 / E - A 0 4 L T , E - A 0 4 L T M P R 0 0 2 1
2 / E - A 0 5 L T , E - A 0 5 L T M P R 0 0 1 1
2 / E - A 0 6 L T , E - A 0 6 L T M P R 0 0 0 1
OPERATION
NOTE: Torque Limiter may run in excess of 200 o F as
measured on the Air Chamber until the Rotary Seal
has worn in.
TABLE 5
CAUTION
The temperature limits for the TL
product line are 4.5-104 Degree
Celsius (40-220 Degree F).
WARNING
Never exceed maximum
operating speeds listed for
your product. (See Table 5).
FIGURE 5
PROXIMITY SENSOR
NOTE: The Nexen Torque Limiter is equipped with a
proximity sensor to detect torque overloads. It is impor-
tant that the sensor be positioned so the dowel pin just
moves into the sensor's field of view when the Torque
Limiter is engaged. At this time, the proximity sensor's
output circuit will be closed. When the Torque Limiter is
overloaded, the dowel pin will move immediately out-
side the proximity sensor's field of view and its output
circuit will open.
1. Apply air pressure to the Torque Limiter.
2. Rotate the Drive Flange Assembly until the positioning
balls are seated into the detents.
3. Slide the Proximity Sensor (Item 55) on the Bracket (Item
3) until the LED on the Proximity Sensor is illuminated.
4. Tighten the screws securing the Proximity Sensor to
the Mounting Bracket.
Align target on
sensor with pin.
Dowel
Pin
M03-.5 Screws
Mounting Bracket
ADJUSTMENTS
Mounting
Plate
Proximity
Sensor
5. Run the machine to verify proper operation of the Torque
Limiter.
6. If nuisance tripping occurs, realign the proximity sensor
with the Dowel Pin until it operates properly.