Daktronics Scoreboard Dual Hoist User Manual

Scoreboard Dual Hoist

Operation & Maintenance Manual

Job #

Arena

City, State

DD1704265 Rev 3—17 July 2013

201 Daktronics Dr. P.O. Box 5128 Brookings, SD 57006-5128
tel [phone] fax [phone]
www.daktronics.com/rigging email [e-mail]

DD1704265

Project/Contract #

Rev3—17 July 2013

CONTRACT NUMBER __________________________________________
FACILITY NAME _______________________________________________
FACILITY ADDRESS _____________________________________________
_____________________________________________
FACILITY CONTACT NAME ______________________________________
EMAIL/PHONE #______________________________________
SYSTEM INSTALL DATE __________________________________________

daktronics, inc.

Copyright © 2012

All rights reserved. While every precaution has been taken in the preparation of this manual, the publisher
assumes no responsibility for errors or omissions. No part of this book covered by the copyrights hereon may be
reproduced or copied in any form or by any means—graphic, electronic, or mechanical, including photocopying,
taping, or information storage, and retrieval systems—without written permission of the publisher.

All trademarks are property of their respective companies.

Table of Contents

Section 1: Theory of Operation ....................................................................................................1

Section 2: S Controls with Leveling .............................................................................................3

2.1 S Controls with Leveling Overview .......................................................................................... 3

Section 3: Push Button Controller ...............................................................................................5

3.1 Description .........................................................................................................5

3.2 Keep Load Levels Aligned .....................................................................................5

3.3 Power up ............................................................................................................5

3.4 Basic Hoist Operation ..........................................................................................5

3.5 To Move an Individual Hoist (refer to Figure 1) ........................................................6

3.6 Description and Operation of Indicator Lights ...................................................................... 6

Section 4: Troubleshooting Guide ...............................................................................................7

Section 5: System Maintenance ...................................................................................................9

5.1 Preventative Maintenance .....................................................................................9

5.2 Supplies ..........................................................................................................10

Other .........................................................................................................10

5.3 Maintenance Process ..........................................................................................11

Check connection points ...............................................................................12

Loft Block Maintenance .................................................................................13

Turnbuckle Maintenance ...............................................................................13

Hoist Brake Adjustments ................................................................................13

Check brake pad wear.....................................................................................................14

Section 6: Warranty .....................................................................................................................17

Table of Contents i

Section 1: Theory of Operation

Each Vortek hoist is connected to the main high voltage power buss through a safety twist-locking plug.
This plug brings in the main 208 or 480 VAC (refer to system riser), 3-phase power that is connected to
the motor contactors and motor brake located in each hoist assembly. The high voltage power originates
in the master control cabinet. Also connected to each Vortek hoist assembly through a safety locking
connector are 24-volt DC control and E-Stop circuit.

The reversing contactors control all movements of the hoist. Each S Series Vortek hoist with Push Button
Control runs in open loop and is controlled at the main Master Control Cabinet (MCC) via momentary
push buttons. Each hoist is protected via hardwired up and down control signals, hard struck limit
switches, emergency stop status and optional over/under capacity sensors. The up and down control
signals determine which contactor to energize for direction to run the hoist. The limit switches are used
for maximum up and down travel. The emergency stop status is used to detect the operation of the
emergency stop system and the optional over/under capacity sensors will insure that the hoist is being
operated within its designed capacity.

Housed within the MCC is a 24-volt DC power supply that powers the control circuit and the e-stop
circuit. A fused disconnect and a master control contactor are also mounted inside the master control
cabinet.

The 24-volt DC E-Stop circuit is connected to the E-Stop button located on the front of the MCC as well as
the E-Stop button located on the pendant, if applicable.

Theory of Operation 1

Section 2: S Controls with Leveling

Warning: The Vortek hoists are not designed to raise and lower people. These
hoists should NEVER be used for this purpose.
If it is necessary to operate a hoist from a location where the operator’s view
of the moving load is obstructed, a second person must be used to observe the
load and communicate to the operator

2.1 S Controls with Leveling Overview

The Vortek hoist system is a dead-haul system meaning that the load is not counter-weighted. Each hoist
can lift loads only up to the design capacity. Overloading will result in electrical and electronic overload
protection shut down of the hoist and possible damage to rigging components.

Each hoist system consists of an integral electric motor driven reducer, directly coupled to a cable drum,
which winds steel cables (wire ropes) leading over sheaves installed within the hoist assembly and along
the structural steel of the building.

The Daktronics S Series controlled hoist system consists of three basic parts.

• Power Panel Assembly housing reversing contactors and control circuitry

• Winch Assembly (cable drum, load brake, limit switches, frame)

• Master Control Cabinet (MCC) and Standard Controller, if applicable.

1. The power panel assembly is located at the end of each Vortek motorized hoist. There
is a resettable circuit breaker located at each power point on the High Voltage wireway
that also serves as a safety disconnect. The rated twist-locking plug on each unit also
acts as a main high voltage disconnect.

2. The Vortek hoist assemblies are mounted on the rigging steel at the top of the stage
house. The gear motor, helically grooved cable drum, support bearing and frame
structure are all factory assembled and tested. On each hoist assembly is one set of
hard struck limit switches. These limits are the upper ultimate limit and lower ultimate
limit. These limit switches are adjusted by factory-trained personnel at the factory and

are ne tuned on site by the installer during installation and commissioning of the

system. There is also one set of over travel limits. Each hoist assembly is also equipped
with a LOAD BRAKE, a unique safety feature provided exclusively by Daktronics. This
unit is designed to engage automatically when the load is being lowered.

3. Control of each hoist is possible from the MCC located such that a clear line of site can
be achieved.

4. The MCC contains the main system disconnect, master control contactor, control voltage
power supply and control buttons.

5. Please see the Controls Operating portion of this manual for the operating procedures.

S Control with Leveling 3