14
80-0042-00, Rev. 06.9
The following procedure recommends the
use of a continuity meter to determine when the
auxiliary switch opens or closes. If such a meter
is not available, it is possible to hear the switch
click as the contacts open and close.
1. Remove the control module cover.
2. Move the output shaft to the desired switch
position.
3. Disconnect power from the drive.
4. Connect the continuity meter across the
normally closed terminal on the terminal
board (terminals 6 and 7 for S1, and 3 and 4
for S2). Adjust the cam until the meter shows
no continuity (switch contacts open, switch
clicks). See Fig. 2, page 13.
5. Disconnect the meter and reconnect actuator
power.
6. Extend/Retract the output shaft in the
direction away from the switch position. Note
the direction of rotation of the lobe of the cam.
The correct cam lobe motion is away from
the switch lever and the switch lever should
be on the lower part of the cam. If this is not
correct, return to step 2 and reset the cam to
the proper orientation.
7. Reconnect the meter and actuator power.
8. Extend/Retract the output shaft again to the
desired switch position. If the contacts close,
the switch is properly set.
9. Replace the control module cover.
SETTING AUXILIARY SWITCHES
(S1 & S2)
All versions of Group 42 actuators referenced
in this manual are shipped with two auxiliary
switches. They may be set at any point in the
active range of actuator travel. Unless otherwise
specified at time of order, these switches are
factory set as follows:
Auxiliary switch S1 is set approximately 2%
(4.32 mA feedback) before the retract limit.
Auxiliary switch S2 is set approximately 2%
(19.68 mA feedback) before the extend limit.
The auxiliary switches are opened and closed
by cams that are driven by the actuator output
shaft. Setting the switch position involves moving
the actuator output shaft to the desired position
and adjusting the cam so that it just actuates the
switch at that point.
CAUTION
Do not attach the meter or attempt
to adjust the switch cams until the
actuator is discon nected from the
line voltage and auxiliary switches
are disconnected from external
power sources.
S1
S2
AUXILIARY
SWITCH SETTINGS
RETRACT
LIMIT
EXTEND
LIMIT
7
4
6
8
3
5
2%
98%
CONTACTS CLOSED
CONTACTS OPEN
CALIBRATION
