80-4280-10, Rev. 4
25
CONTACTS CLOSED
CONTACTS OPEN
S1
S2
CALIBRATED TRAVEL
100° TYPICAL
Note: The switch contacts are shown at midpoint of travel.
CCW
LIMIT
CW
LIMIT
2%
2%
6
5
4
7
8
9
AUXILIARY LIMIT SWITCH SETTINGS
FIGURE 3.
LIMIT SWITCH CAM DETAIL (both versions)
SETTING AUXILIARY LIMIT
SWITCHES S1 & S2
Standard switch settings for the two auxiliary
switches are shown on the Auxiliary Limit Switch
Settings diagram (right). The heavy line indicates
a closed circuit. Use the following instructions to
change the operating point of auxiliary switches:
NOTE: In the following procedure, it is
assumed that switch settings are to be
adjusted so that contacts are open when the
desired position is achieved.
1. Remove the control end cover and the terminal
block cover (1/2” wrench).
2. Move the output shaft to the desired switch trip
position.
3. Turn the Handswitch to the “STOP” position.
4.
Disconnect power from the actuator and
switch terminals.
5. Connect the continuity meter across the
appropriate terminals. See the actuator wiring
diagram under the terminal block cover (or the
diagram at right).
6. Rotate the appropriate cam using the 3/32”
hex wrench in one of the cam adjustment slots
(see below) until the meter shows continuity
(switch contacts closed, switch clicks).
7. Disconnect the meter and reconnect power.
8. Move the output shaft in the desired direction
to verify that the cam lobe moves away from
the switch lever. If not correct, return to step 2
and reset the cam to the proper orientation.
9. Replace covers and tighten cover bolts to
10 Ib-ft (14 N•m) torque.
Coupling
Switches
Switches
Adjustable
Cams
Adjustment
Slots
