SETUP
The AD1240 has two adjustable end stop switches which limit
the angle of travel for both the pan axis and the tilt axis. Set
these end stop switches to suit the site conditions. For models
with AutoPan, these end stops determine the end points of the
automatic panning action.
End Stop Limit Adjustment
SWITCH LOCATION
The limit switches for both Pan and Tilt movement are
located inside the AD1240 main body. To access the limit
switches, remove the four bolts on the front cover of the unit
(opposite the external connector) using the supplied 3 mm
Allen wrench, and remove the cover.
• The limit switches are located on the top plate of the pan
axis and tilt axis gearboxes (see Figures 13 and 14).
• The adjustable limit strikers are located on the end of
each axis main shaft (see Figure 14).
AXIS ALIGNMENT (Preset models only)
Before setting the limit strikers in the Preset models, the unit
must be aligned for proper travel of the preset potentiometer.
This alignment is important to prevent operation of the
AD1240 past the designed limits of travel.
Alignment marks (red dots) are provided on each axis main
gear and gearbox (see Figures 13 and 14, page 13) to assist
in aligning the unit. The AD1240, as shipped from the
factory, is set at the proper alignment positions for setting
the limit strikers. It is recommended that you confirm correct
lateral and vertical alignment of the actuator. Alignment by
the user is necessary only if the end stops are to be changed
after operation of the unit.
Align each axis by aligning the red mark on each main gear
with the red mark on the associated gearbox. (refer to
Figures 13 and 14 on page 13). Perform this alignment only
by applying control voltages (24VAC, ±10%) to the
applicable connector pins (Pan Left or Right, and Tilt Up or
Down).
Note: DO NOT attempt to rotate or position either axis by
hand, as this will cause irreversible damage to the
gears and transmission parts.
STRIKER ADJUSTMENT
Set the limit striker arms for the desired angle of travel to
suit the application. For Preset models, perform the Axis
Alignment (preceding paragraph) prior to this adjustment.
1. Push the appropriate adjustment arm in the desired
angular position for limit control of the Right/Left (Pan
axis), and/or the Up/Down (Tilt axis) direction.
• Adjust the limit strikers with finger pressure only.
The following are typical pan or tilt angle limit settings.
• The maximum Tilt setting is ±90°, or 180° limits.
Note: For Preset models, be careful not to push either
striker arm past the red axis alignment marks (see
Figures 13 and 14). The two striker arms must be
positioned on either side of the mark - do not
locate both arms on one side of the mark as
illustrated below.
2. Verify proper operation of the unit at both end stops
before re-attaching the front cover to the AD1240.
Note: Be careful when verifying operation of the unit -
any movement of the unit while the cover is
removed may cause damage to the unit.
3. Refit the front cover onto the AD1240 and tighten the
four 3 mm bolts holding the cover.
AutoPan Setup
The AutoPan models (AD1240/24A or AD1240/24PA) must
be set for the proper AutoPan ends stops. This is accomplished
by adjusting the Pan axis limit strikers to the desired end stop
positions, as above.
When the AutoPan signal is applied (24VAC ±10% to pin 6),
the unit continuously pans between the two end stops, until the
signal is removed.
12
SETUP
AD1240
CAUTION - Due to the presence of non-
insulated components with hazardous
voltages, the following internal adjustments
should be performed by qualified service
personnel only.
!
180º Limits
90º Limits
359º Limits
Improper Striker
Setting
Main Gear
Alignment Mark
