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SCENECONTROL 500 OPERATING INSTRUCTIONS
Design, Manufacture and Installation of Theatrical Equipment Worldwide
(315) 451-3440
Fax (315) 451-1766
www.jrclancy.com
Rev 1: February 15, 2007
The sensitivity of the system can be adjusted from
the Motors page, by adjusting the LdWndw
parameter. This parameter may be decreased to
make the system more sensitive, or may be
increased to decrease the incidence of false tripping.
After changing this parameter, be sure to re-test the
system to assure that it is still responsive without
false tripping.
Load Disable
There are times when it may not be possible to use load sensing. An example would be when loading or
unloading a batten, or when the normal operation of a set will involve a sudden change in the load on the set.
In such a case, load sensing may be turned off on one or more individual sets. Working on the Sets page,
highlight the desired winch and touch the Load Disable button. On certain systems, the set color will change
on the 3D screen when Load Sensing is disabled.
Glossary
•
Acceleration rate - pertains to variable-speed sets. Expresses the rate of change of the velocity of a set
as it increases toward full speed. Expressed in distance per second per second.
•
Acceleration time - the number of seconds required for a variable-speed machine to achieve the specified
velocity at the programmed acceleration rate. Expressed in seconds.
•
Deceleration rate – pertains to variable-speed sets. Expresses the rate of change of the velocity of a set
as it decreases toward a stop. Expressed in distance per second per second.
•
Deceleration time – the number of seconds required for a variable-speed machine to come to a stop from
the specified velocity, at the programmed deceleration rate. Expressed in seconds.
•
Enable – A set is enabled if a target has been designated for it. When a set is enabled, the set name will
appear in
BOLD
characters. A green wire-frame representation of the target position will appear in the
designated target position on the 3-D screen, while a blue solid figure will represent the current position of
the set. If the enabled set is also selected, the set name will appear in bold green letters; if the enabled
set is not selected, the set name will appear in bold white letters. When a set is enabled, it can be
moved using the active Go Preset button, whether or not the set is also selected.
•
Normal (or hard) Limit - a point, defined by a hardware limit switch, beyond which an axis may not travel.
When an axis stops at a normal limit, it may travel in the opposite direction to leave the normal limit.
•
Overtravel Limit - a point, defined by a hardware limit switch, which serves as a backup to a normal limit.
Striking an overtravel limit is a fault condition - if an axis strikes an overtravel limit, all power is cut off to
that axis. A maintenance procedure is required to move an axis off an overtravel limit.
•
Select – A set is selected by touching it. While the set is selected, its name on the 3-D display is shown
in green letters, and a Vertical Position window shows position information. A set must be selected in
order to move it with the Up and Down pushbuttons, or in order to designate a target (and velocity, if
variable-speed) for it.
