HS-105P
Installation
3-14
User Manual
Pan & Tilt Limits
The HS-105P has a combination of mechanical and electrical limits for the pan
and tilt ranges. These are in addition to the clip limits that can be set if you are
using a touch screen controller. Microswitches in each of the motor drive wires
will open at predetermined positions and prevent further travel in that direction.
Diodes across the microswitches allow the head to be backed off from the limit
to re-close the switch that was open - see the HS-105P Wiring Diagram on
page 8 of Chapter 4. In addition to the limit switches, jumpers in the head are
used to set the electrical range of the servos. In most applications, the limit
switches are set to allow motion just slightly beyond the electrical range of the
servo. Thus, if there is a servo failure, the microswitches only allow the head to
travel slightly beyond the limits established by the jumpers.
Pan Limit Switches
The pan limit switches and their respective cams are shown below.
References to clockwise (CW) and counterclockwise (CCW) directions are as
viewed from above. To change the pan limit switch settings:
1.
Use a 3/32” hex key to remove the 7 screws in the tilt motor cover.
2.
With the controller turned off, turn the HS-105P head on and allow it to
complete the indexing routine. The pan and tilt shutters will be positioned
with an edge at their respective photosensors, and the head will be oriented
straight ahead and level.
3.
Turn the head off. Viewing from above, manually pan the head in a
counter-clockwise direction - the pan limit cams will rotate clockwise -
stop when you reach the desired limit position.
Pan Index
Optosensor
Pan Shutter
Lower Cam
(CW Pan Limit)
CW (Lower)
Switch Actuator
CCW (Upper)
Switch Actuator
Upper Cam
(CCW Pan Limit)
Cam Lock
Screws
Summary of Contents for HS-105P
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