
201 Daktronics Drive, PO Box 5128, Brookings, SD 57006
Phone: 1-800-325-8766 or 605-692-0200 Fax: 605-697-4746
www.daktronics.com E-mail: [email protected]
SCOREBOARD HOIST SUSPENSION SYSTEM SPECIFICATIONS
The objective of these specifications is to design to single component failure prevention principals. This means that the system has
been analyzed for reasonable failure possibilities and a means of backing up the possible failing component is designed into the
system.
THE HOIST SYSTEM INCLUDES:
• The hoist, which includes all components necessary for a complete and safe installation.
• All necessary components, brackets, required to mount the hoist to the building infrastructure.
• Hoist control pendant.
• Hoist installation including scoreboard hookup and setting of safety limits, and maintenance/operator training.
• Hoist provider shall provide customer with detailed building loading information.
THE BASE BUILDING WILL PROVIDE:
• Verification that the system and its integration into the building structure compose a thoroughly designed and adequately
engineered system to support all anticipated static and dynamic loads.
HOIST SPECIFICATIONS:
• Shall be designed to support the scoreboard load 100 % of the time
• Shall have automatic failure-protection safety brake one per drum to slow, stop and hold the rated load with a maximum
impact of 150% of rated load.
• Shall automatically disable hoist motor functions when an over speed condition is detected.
• Shall have key ways designed to eliminate possibility of keys walking or escaping.
• Shall have reeving of lifting cables with maximum of 2-degree fleet angle.
• Shall have 8:1 factor of safety on any single leg of a reeved cable.
• Shall have sheave, cable, and cable to drum connections with 8:1 factor of safety to design load.
• Shall have continuously engaged mechanical braking system, which runs in parallel to the electro-magnetic motor brake
• Shall have gear reducer manufactured to AGMA specification, rated to support the scoreboard at a minimum
service factor of 1.
• Shall have lifting speed range of 5-20 fpm.
• Shall have 2 separate cables per pick point on 2 pick point systems.
• Shall have integral motor disc brake rated in excess of 150% of full load motor torque.
CONTROL SPECIFICATIONS:
• Low Voltage Push Button Control Station (Standard)
• The manual control center for the Daktronics S Series self-contained rigging system shall be wall mountable and contain
two momentary control push buttons for direction and a hoist enable selector switch for each hoist in the system.
Maximum number of motors permitted to run simultaneously shall be limited to power availability or customer preference.
A power on indicator and a keyed system maintained Emergency Stop mushroom head push button shall come standard
with all control options. The manual control center shall house all hardware necessary to control each hoist module
in the system independently.
• Each hoist shall operate in open loop permitting the hoist to travel within its allowable trim limits.
• Each hoist shall be tested and commissioned at the factory to configure upper and lower soft limits as specified. Fine hard
limit adjustment shall be done on site by a certified Daktronics representative.
• Each hoist will be equipped with hard struck over travel limits as well as a redundant ground out circuit designed to set the
motor brake in the event of a switch failure.
• Hard struck switches shall only be used as the first line of defense to prevent an over travel occurrence. Under normal
operation, the hoist will be permitted to travel within its hard struck limits. If a hard struck limit is engaged, the hoist must
come to a complete stop and automatically disable any further movement in that direction.
SL-03610
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