Daktronics DF-1020 User Manual
Reproduction Reference
ED-13750 – P1279
DataMaster Gasoline Price Displays
1. This page is for reproduction reference only and will not be included in the manual.
2. This manual is to be copied on FRONT AND BACK PAGES –8 ½ x 11 paper.
3. Note: The first and second pages, Cover Page and Copyright Page, use the front of the page
(blank on back). Section heading pages always start on a new page; they never start on the back
of another page.
4. Drawings for this manual are listed in the following table. Group and insert the drawings in
alphanumeric order in Appendix A: Reference Drawings. Reduce all size B drawings to A-size,
and print all A drawings back-to-back and all B drawings back-to-back.
A-166142
A-166216
A-167237
A-168376
A-175342
A-177935
A-179599
A-38532
A-164988
A-164998
A-165028
A-165742
A-165743
A-166139
5. Insert the following documents in these Appendices as follows:
Appendix B:
Data
Master Frequently Asked
Questions ...................................................................................ED-13481
Appendix C:
Gasoline Price Displays
Direct-Wire Installation
Quick Install Reference...............................................................ED-13965
Riser Diagram, Indoor Wire Control................Drawing A-175342
Light Sensor Installation, G3...........................Drawing A-183775
Appendix D:
DataMaster Gasoline Price Displays
Quick Start Reference.................................................................ED-13960
A-181220
A-181222
A-181224
A-181233
A-181234
A-181235
A-181672
(Continued on next page)
A-181673
A-183775
A-184475
A-184918
A-185176
A-185177
A-185203
A-185204
A-185205
A-185206
A-189768
(Continued from preceding page)
6. All sections and all Appendices are to be tabbed with the following labels:
Section 1: Introduction
Section 2: Display Specifications
Section 3: Installation
Section 4: Display Service Information
Section 5: DataMaster 100 Controller
Section 6: Display Operation
Section 7: POS Interface Installation and Operation
App A: Reference Drawings
App B: DataMaster FAQ
ED13481
App C: Gas Price Quick Install
ED13965
App D: Gas Price Quick Start
ED13960
7. Use a blue window cover and a blue back.
8. Punch all pages, window cover and back cover along the left edge and bind with a binder.
9. Please direct questions and suggestions to Engineering Support.
DataMaster™ Outdoor LED
Gasoline Price Displays
Installation and Operation Manual
ED-13750 Rev 3 – 26 Jan 2005
332 32nd Ave PO Box 5128 Brookings SD 57006
Tel 605-697-4036 or 877-605-1115 Fax 605-697-4444
www.daktronics.com e-mail: helpdesk@daktronics.com
ED-13750
Product 1279
Rev 3 – 26 Jan 2005
Please fill in the information below for your DataMaster display and controller;
use it for reference when calling Daktronics for assistance.
Display Serial No. _____________________________________________
Display Model No. _____________________________________________
Date Installed ________________________________________________
DataMaster Serial No. __________________________________________
DAKTRONICS, INC.
Copyright © 2004
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.
DataMaster™, All Sport ® and DataTime® are trademarks of Daktronics, Inc. Other trademarks used in this
manual are the property of their respective owners.
i
Table of Contents
Section 1: Introduction....................................................................................1-1
1.1 How To Use This Manual .........................................................................1-1
1.2 Daktronics Nomenclature.......................................................................... 1-2
1.3 Manual Overview......................................................................................1-3
1.4 Product Overview......................................................................................1-4
1.5 Model Names.............................................................................................1-5
1.6 Product Safety Approval ........................................................................... 1-5
Section 2: Gasoline Price Display Specifications........................................2-1
2.1 Mechanical Specifications Drawings ........................................................2-1
2.2 Electrical Specification Drawings ............................................................. 2-1
2.3 Specifications ............................................................................................ 2-3
Section 3: Mechanical and Electrical Installation ........................................3-1
3.1 Mechanical Installation..............................................................................3-1
Lifting the Display..............................................................................3-1
3.2 Electrical installation.................................................................................3-2
Power.................................................................................................. 3-3
3.3 Power and Signal Connection ................................................................... 3-5
Host/Client and Master/Slave Definitions and Address Settings....... 3-6
3.4 Photo Sensor Installation........................................................................... 3-7
Section 4: Display Maintenance and Troubleshooting................................4-1
4.1 Cabinet Specifications............................................................................... 4-1
4.2 Component Location and Access.............................................................. 4-1
Replacing a Digit................................................................................ 4-2
Replacing a Digit Segment.................................................................4-3
Replacing a Driver..............................................................................4-3
4.3 Schematics.................................................................................................4-4
4.4 LED Drivers .............................................................................................. 4-4
4.5 Segmentation and Digit Designation......................................................... 4-5
4.6 Troubleshooting......................................................................................... 4-6
Power On Self-Test:........................................................................... 4-7
4.7 Lightning Protection.................................................................................. 4-8
4.8 Replacement Parts ..................................................................................... 4-8
4.9 Daktronics Exchange and Repair and Return Programs..........................4-11
Section 5: DataMaster 100 Controller............................................................5-1
5.1 DataMaster 100 Overview......................................................................... 5-1
Replacement Parts List....................................................................... 5-1
5.2 Control System Overview .........................................................................5-2
Wire Control....................................................................................... 5-3
Table of Contents
5.3 Controller Signal Connection....................................................................5-4
Section 6: Gas Price Display Operation........................................................ 6-1
6.1 DataMaster™ Insert and Code....................................................................6-1
6.2 Gas Price Display Operation .....................................................................6-1
Gas Price Display Startup................................................................... 6-2
Gas Price Controller Operation .......................................................... 6-2
Modifying Price Line Settings............................................................6-3
Dimming.............................................................................................6-3
Display Sequence ............................................................................... 6-5
Menu Items.........................................................................................6-6
Edit Price Line 1-5..............................................................................6-6
Section 7: POS Interface Installation and Operation................................... 7-1
7.1 Hardware installation:................................................................................7-1
7.2 Configuring the DM-100 for Gilbarco G-Site Interface............................7-2
Changing Prices:.................................................................................7-3
Appendix A: Reference Drawings .....................................................................A-1
Appendix B: DataMaster Frequently Asked Questions (FAQ) .......................B-1
Appendix C: DataMaster Gasoline Price Quick Installation Reference.........C-1
Appendix D: DataMaster Gasoline Price Quick Start Reference....................D-1
ii Table of Contents
i
List of Figures
Figure 1: Daktronics Drawing Label ..................................................................................1-1
Figure 2: Display Identification Label................................................................................1-2
Figure 3: Gasoline Price Display........................................................................................1-4
Figure 4: Lifting the Display...............................................................................................3-2
Figure 5: DataMaster Driver Enclosure with 4-Column Driver .........................................3-5
Figure 6: Internal Light Sensor...........................................................................................3-7
Figure 7: DataTime Time and Temp Display with Door Panels Open...............................4-1
Figure 8: Digit Assembly....................................................................................................4-2
Figure 9: Segmented Digit Panel........................................................................................4-3
Figure 10: Digit Designation...............................................................................................4-5
Figure 11: DataMaster 100 .................................................................................................5-1
Figure 12: DataMaster 100 Controller with Signal Cable...................................................5-3
Figure 13: Wire Control from Base of Sign........................................................................5-4
Figure 14: Wire Control from Building Location...............................................................5-5
Figure 15: DataMaster 100 Insert LL-2551........................................................................6-1
List of Figures
Section 1: Introduction
This manual explains the installation and operation of Daktronics DataMaster™ Outdoor
LED Gasoline Price Displays and provides details for display maintenance. If you have
questions regarding the safety, installation, operation, or service of these systems, contact
Daktronics. Customer Service Help Desk telephone numbers are listed on the cover page of
this manual.
1.1 How To Use This Manual
Important Safeguards:
1. Read and understand these instructions before installing your display.
2. Do not drop the controller or allow it to get wet.
3. Properly ground the display with a ground rod at the sign location.
4. Disconnect power when the display is not in use.
5. Disconnect power when servicing the display.
6. Do not modify the display structure or attach any panels or coverings
without the express written consent of Daktronics, Inc.
Figure 1, below, illustrates the Daktronics drawing numbering system. Daktronics
identifies individual drawings with a number (1279-RO4A-181218 in the example),
which is located in the bottom right corner of each drawing. This manual refers to
drawings by the last set of numbers in their ID as well as the letter preceding them.
The example would be Drawing A-181218.
Figure 1: Daktronics Drawing Label
Reference drawings in this manual are grouped and inserted in alphanumeric order
in the Appendix.
Listed below are a number of drawing types commonly used by Daktronics, along
with the information each is likely to provide.
System Riser Diagrams: overall system layout from control room to
display, power, and phase requirements.
Shop Drawings: fan locations, transformer locations, mounting
information, power and signal entrance points, and access method (front or
rear).
Introduction 1-1
Schematics: power wiring, signal wiring, panelboard or power termination
panel assignments, signal termination panel assignments, and transformer
assignments.
Final Assembly: component locations, part numbers, display dimensions,
and assembly/disassembly instructions.
All references to drawing numbers, appendices, figures, or other manuals are
presented in bold typeface, as in this example: “Refer to Drawing A-181220 for the
location of the driver enclosure ”. Additionally, any drawings referenced within a
particular subsection are listed at the beginning of that subsection in the following
manner:
Reference Drawing:
Mechanical Specs, DF-1020-13, G3.....................Drawing A-181220
Daktronics identifies manuals by their engineering document (ED) number, which is
located on the cover page of the manual. For example, this manual would be referred
to as ED-13750.
The serial and model numbers of a Daktronics display can be found on the ID label
on the display. The label will be similar to the one shown in Figure 2. When calling
Daktronics Customer Service, please have this information available to ensure that
your request is serviced as quickly as possible. For future reference, note your
display model number, serial number, and installation date on the front page of this
manual.
Figure 2: Display Identification Label
Daktronics displays are built for long life and require little maintenance. However,
from time to time, certain display components will have to be replaced. The
Replacement Parts List in Section 4 provides the names and part numbers of
components that may require replacement during the life of this display.
Following the Replacement Parts List is an explanation of Daktronics exchange and
replacement programs. Refer to these instructions if you must replace or repair any
display component.
1.2 Daktronics Nomenclature
To fully understand some Daktronics drawings, such as schematics, it is necessary to
know how various components are labeled in those drawings. You will find this
information useful when trying to communicate maintenance or troubleshooting
efforts.
1-2 Introduction
The label “A” on a drawing item typically denotes an assembly. An assembly can be
a single circuit board or a collection of components that function together, usually
mounted on a single plate or in a single enclosure.
In addition, the following labeling formats might be found on various Daktronics
drawings:
“TB _ _” denotes a termination block for power or signal cable.
“E _ _” denotes a grounding point.
“J _ _” denotes a power or signal jack.
“P _ _” denotes a power or signal plug for the opposite jack.
Finally, Daktronics part numbers are commonly found on drawings. Those part
numbers can be used when requesting replacement parts from Daktronics Customer
Service. Take note of the following part number formats. (Not all possible formats
are listed here.)
“0P- _ _ _ _- _ _ _ _” denotes an individual circuit board, such as a driver
board.
“0A-_ _ _ _ - _ _ _ _” denotes an assembly, such as a circuit board and the
plate or bracket to which it is mounted. A collection of circuit boards
working as a single unit may also carry an assembly label.
“W- _ _ _ _ ” denotes a wire or cable. Cables may also carry the assembly
numbering format in certain circumstances. This is especially true for
ribbon cables.
“T- _ _ _ _ ” denotes a transformer.
“PR- _ _ _ _ _ - _” denotes a specially ordered part.
“M- _ _ _ ” denotes a metal part, and “0M-_ _ _ _ _ _” typically denotes a
fabricated metal assembly.
1.3 Manual Overview
This manual details outdoor LED numeric displays. It is divided into the following
sections:
Section 1: Contains an overview of the DataMaster Series, product safety
information, and labeling and numbering descriptions.
Section 2: Lists Gas Price display drawings with mechanical and electrical
information and contains a table detailing the mechanical
specifications, circuit specifications and power requirements for
each model.
Section 3: Contains information needed to perform the mechanical and
electrical installation for each model.
Section 4: Contains service and troubleshooting information.
Section 5: Contains an overview of the DataMaster controller, with a
description of the types of control systems and instructions for
DM-100 setup.
Introduction 1-3
Section 6: Provides operating instructions for Gas Price displays.
Section 7: POS Interface Installation and Operation
Appendix: Contains all drawings referenced in this manual, quick-start
guides, and a list of frequently asked questions.
1.4 Product Overview
DataMaster Gasoline Price displays are part of a family of Daktronics products
designed for easy installation, readability, and reliability. Microprocessor control
assures consistent operation and accuracy. The Gas Price display is illustrated in
Figure 3 below.
The DataMaster Series includes:
The Gasoline Price displays are available in two styles, a full-cabinet model
designed for standalone use (DF-1020), and a front-insertion, or “drop-in”, model
designed for installation in an existing or custom sign (DF-1021).
DataMaster displays use light emitting diodes to illuminate their numeric digits.
(Light emitting diodes, or LEDs, are tiny, solid-state components that use a
semiconductor to transform electrical current into light; they are high-intensity, lowenergy lighting units.)
The displays feature highly visible PanaView
(The front-insertion Gas Price model is available with 13", 18" and 24" digits.) All
DataMaster displays are configured with red or amber LEDs.
Because of their LED technology, the displays consume little power, some barely
more than a household lamp. Power usage for individual displays in this series is a
maximum 300 W. All models have a 120 V power requirement.
Figure 3: Gasoline Price Display
Gasoline Price Displays: gas price signs with three standard digits,
decimal, and
9
Rate Displays: two- or four-digit signs, typically used to display
hotel/motel room rates or commodity prices.
Time & Temperature Displays: Automatic time & temp signs capable of
displaying temperatures in Fahrenheit or Celsius (three digits, degree
symbol, and F or C character) and 12- or 24-hour time.
/
fraction.
10
®
digits 13", 18", 24", 36" and 48" tall.
1-4 Introduction
DataMaster cabinets, specially developed for outdoor use, are constructed of heavygauge aluminum. Digit faceplates are black, and they are set directly into the surface
of the display. Mounting weights and dimensions for each model are listed in
Section 2 of this manual.
The DataMaster outdoor LED displays have been designed for use with a
DataMaster
an insert) for display control, and the DataMaster displays themselves operate
without modification on All Sport
provides complete operating instructions.
™
100 hand-held controller. The device uses a keyboard overlay (called
1.5 Model Names
Daktronics displays, video screens, and scoreboards are differentiated by their model
numbers. The displays described in this manual all carry the two-letter prefix, DF-,
which indicates that they are DataMaster models. The letter D indicates that they are
numeric displays; the letter F indicates LED technology.
In the outdoor LED display series, typically the first set of numbers following the
prefix identifies the series or product line, while the second set of numbers refers to
digit height. A final letter denotes digit color. With Model DF-1020-13-A, for
example, 1020 identifies the Gas Price full-cabinet line, and 13 signifies that the
display’s primary digits are a nominal 13" tall. In the example, the letter A signifies
that the digits are amber, while R would indicate red LED digits.
Another designation often used with the Model DF-1021 Gas Price display is an M
or an S; those letters indicate that the display is either a master or a slave unit.
®
5000 signal protocol. Section 6 of this manual
1.6 Product Safety Approval
Daktronics outdoor displays are ETL listed and tested to CSA standards for outdoor
use. Contact Daktronics with any questions regarding the testing procedures.
Introduction 1-5
Section 2: Gasoline Price Display
Specifications
2.1 Mechanical Specifications Drawings
Use the following table to determine the mechanical specifications for your display.
The drawings are listed below by model number; they have been inserted in the
Appendix in alphanumeric order by drawing number.
Model Drawing Title Drawing Number
Full-Cabinet Displays (DF-1020 Series)
DF-1020-13 Mechanical Specs, DF-1020-13, G3 Drawing A-181220
DF-1020-18 Mechanical Specs, DF-1020-18, G3 Drawing A-181224
DF-1020-24 Mechanical Specs, DF-1020-24, G3 Drawing A-181234
DF-1020-36 Mechanical Specs, DF-1020-36, G3 Drawing A-165742
DF-1020-48 Mechanical Specifications,
DF-1020-48, G3
Front-Insertion/Drop-In Displays (DF-1021 Series)
DF-1021-13 Mechanical Specs, DF-1021-13, G3 Drawing A-185176
DF-1021-18 Mechanical Specs, DF-1021-18, G3 Drawing A-185203
DF-1021-24 Mechanical Specs, DF-1021-24, G3 Drawing A-185205
2.2 Electrical Specification Drawings
Use the following table to determine the electrical specifications for your display.
The drawings are listed below by model number; they have been inserted in the
Appendix in alphanumeric order by drawing number.
Drawing A-181672
Gasoline Price
Display Specifications
2-1
Model Drawing Title Drawing Number
Full-Cabinet Displays (DF-1020 Series)
DF-1020-13 Electrical Specs, DF-1020-13, G3 Drawing A-181222
DF-1020-18
DF-1020-24
DF-1020-36
DF-1020-48
Electrical Specs, DF-1020-18, G3 Drawing A-181233
Electrical Specs, DF-1020-24, G3 Drawing A-181235
Electrical Specs, DF-1020-36, G3 Drawing A-165743
Electrical Specs, DF-1020-48, G3 Drawing A-181673
Front-Insertion/Drop-In Displays (DF-1021 Series)
DF-1021-13 Electrical Specs, DF-1021-13, G3 Drawing A-185177
DF-1021-18
DF-1021-24
Electrical Specs, DF-1021-18, G3 Drawing A-185204
Electrical Specs, DF-1021-24, G3 Drawing A-185206
2-2
Gasoline Price
Display Specifications
2.3 Specifications
The table below shows all of the mechanical specifications, circuit specifications, and
maximum power requirements for each model in this series. Models are listed in
alphanumeric order by digit size.
DataMaster Gasoline Price Displays
Weight
Model Dimensions
Uncrated
Crated
Digit
Size/Color
Maximum
Wattage
Circuit
DF-1020-13-A
DF-1020-13-R
DF-1020-18-A
DF-1020-18-R
DF-1020-24-A
DF-1020-24-R
DF-1020-36-A
DF-1020-36-R
DF-1020-48-A
DF-1020-48-R
H1’-6", W4’-0", D6"
(457 mm, 1219 mm,
152 mm)
H2’-0", W5’-0", D6"
(610 mm, 1524 mm,
152 mm)
H2’-6", W6’-6", D6"
(762 mm, 1981 mm,
152 mm)
H3’-6", W8’-6", D8"
(1067 mm, 2591
mm, 203 mm)
H4’-6", W11’-0", D8"
(1372 mm, 3353
mm, 203 mm)
36 lb (16 kg)
58 lb (26 kg)
60 lb (27 kg)
96 lb (44 kg)
90 lb (41 kg)
144 lb (65 kg)
160 lb (73 kg)
256 lb (116 kg)
280 lb
(127 kg)
448 lb (203 kg)
13"
(330 mm)
Amber, red
18"
(457 mm)
Amber, red
24"
(610 mm)
Amber, red
36"
(914 mm)
Amber, red
48"
(1219 mm)
Amber, red
150 W
150 W
150 W
300 W
300 W
120 V AC
1.3 A
120 V AC
1.3 A
120 V AC
1.3 A
120 V AC
2.5 A
120 V AC
2.5 A
Gasoline Price
Display Specifications
2-3
Model Dimensions
DF-1021-13-A
DF-1021-13-R
DF-1021-18-A
DF-1021-18-R
DF-1021-24-A
DF-1021-24-R
H1’-6", W4’-0", D6"
(457 mm, 1219
mm, 152 mm)
H2’-0", W5’-0", D6"
(610 mm, 1524
mm, 152 mm)
H2’-6", W6’-0", D6"
(762 mm, 1829
mm, 152 mm)
Weight
Uncrated
Crated
36 lb (16 kg)
58 lb (26 kg)
60 lb (27 kg)
96 lb (44 kg)
90 lb (41 kg)
144 lb (65 kg)
Digit
Size/Colo
r
13"
(330 mm)
Amber, red
18"
(457 mm)
Amber, red
24"
(610 mm)
Amber, red
Maximum
Wattage
150 W
150 W
150 W
Circuit
120 V AC
1.3 A
120 V AC
1.3 A
120 V AC
1.3 A
2-4
Gasoline Price
Display Specifications
Section 3: Mechanical and Electrical
Installation
Mechanical installation typically consists of installing concrete footings and steel beams and
mounting the display and any accompanying panels to the beams.
Electrical installation consists of the following processes:
Providing power and ground to a disconnect near the display.
Routing power and ground from the main disconnect to the display driver/power
enclosure.
Connecting the display ground to a grounding electrode at the sign location.
Routing the control signal cable from the control location to the sign location.
3.1 Mechanical Installation
Reference Drawings:
Mounting Method, Flag Style, One Pole......................Drawing A-166139
Mounting Method, Single Line on One Pole................Drawing A-166142
While DataMaster outdoor digit displays are designed for wall or pole mounting, every
installation will be different. Actual site demands will dictate the appropriate mounting
method. Most DataMaster models have fully finished exteriors, for example, but other
models are designed to be inserted into an existing sign cabinet and require a custom
installation.
The engineering drawings referenced above detail a number of mounting methods,
from a single display on a single column support to multiple displays stacked above
one another in a two-pole installation. The drawings include welding and hardware
notes that will be applicable for most installations.
Note: The drawings suggest mounting methods and are not to be considered as
specifications for construction. The actual mounting hardware and structural
design must be specified by a qualified engineer.
Lifting the Display
Model DF-1020 displays are shipped equipped with 3/8" eyebolts that are used for
lifting and positioning the modules. Eyebolts are located along the top outer edges of
the cabinet. Model DF-1021 drop-in displays are not so equipped.
Mechanical and 3-1
Electrical Installation
Daktronics strongly recommends using a spreader bar, or lifting bar, to lift the
display. Using a spreader bar ensures that the force on the eyebolts is straight up,
minimizing lifting stress. Figure 4, below, illustrates two lifting methods.
Figure 4: Lifting the Display
The illustration shows both the preferred method (left example) and an alternative
method (right example) for lifting a display. Be sure to use every lifting point
provided.
Note: Daktronics assumes no liability for display damage or injury
resulting from incorrect setup or incorrect lifting methods.
Eyebolts are intended for lifting during installation o nly. Do not attempt to
permanently support the display by the eyebolts.
In installations in which an ad panel or some other display section may be added to
the base display, the lower section is installed first and secured to the support beams,
and then the upper section is placed atop or above the lower sign section and
attached to the beams. There may be cables extending from the top of the lower
section. Guide these cables into the hole in the bottom of the upper section for later
connection.
Installers may remove the lift eyebolts once the display is in place. On models with
13", 18" or 24" digits, thread
digits, install
1
/2"-13 bolts in the holes.
3
/8"-13 bolts into the holes. On models with 36" or 48"
3.2 Electrical installation
Reference Drawing:
Quick Install, DF-1020 Gas Price Displays................. Drawing A-189768
Drawing A-189768 provides detailed instructions for power and signal connections
for Gas Price displays, including hookup of the light sensor and connections
between host and client displays. Refer to this drawing before undertaking any part
of the electrical installation.
3-2
Mechanical and
Electrical Installation
Note: Only qualified individuals should perform power routing and termination
to the display. It is the responsibility of the electrical contractor to ensure that
all electrical work meets or exceeds local and national codes.
Power
Reference Drawings:
Schematic; Multipurpose 4 Col. LED Drvr.............Drawing A-165028
Schematic; Gen III Outdoor LED,
8 Column Drvr.................................................Drawing A-177935
Schematic; 16 Col Multipurpose LED Drvr............Drawing A-179599
Daktronics DataMaster displays have been designed for easy access to components,
and the power and control signal hookup has been simplified. Front panels are
removable or hinged to allow access to the digits, cabling, and other electronic
components.
Correct power installation is imperative for proper display operation. The
subsections that follow give details of display power installation. Only qualified
individuals should attempt to complete the electrical installation; untrained personnel
should not attempt to install these displays or any of the electrical components.
Improper installation could result in serious damage to the equipment and could be
hazardous to personnel.
The DataMaster outdoor displays require a dedicated, 120 V circuit for incoming
power. The display itself has no breakers or fuses.
WARNING: It is critical that the display circuit be fused at 15 A, and that all
conductors used must be designed to pass a 15 A current in normal operation.
Failure to meet wiring and overcurrent protection device requirements is a
violation of the National Electrical Code
®
and will void the display warranty.
Refer to the DataMaster display schematics listed above and to the chart in Section 2
to determine circuit specifications and maximum power requirements for the models
described in this manual.
Grounding
Reference Drawings:
Schematic; Multipurpose 4 Col. LED Drvr.............Drawing A-165028
Schematic; 16 Col Multipurpose LED Drvr............Drawing A-179599
Enclosed Driver, 4 Column Reference..................Drawing A-184918
Schematic; Gen III Outdoor LED,
8 Column Drvr.................................................Drawing A-177935
Displays MUST be grounded according to the provisions outlined in Article 250
of the National Electrical Code and according to the specifications in this
manual. Daktronics recommends a resistance-to-ground of 10 ohms or less.
Mechanical and 3-3
Electrical Installation
The contractor performing the electrical installation can verify ground
resistance. Technicians from Daktronics Sales and Service offices can also
provide this service.
The display system must be connected to an earth electrode installed at the display.
Proper grounding is necessary for reliable equipment operation. It also protects the
equipment from damaging electrical disturbances and lightning. The display must
be properly grounded, or the warranty will be void. Refer to the schematics,
Drawings A-165028, A-177935, and A-179599, or the driver reference, Drawing
A-184918, for information on where to connect the grounding wire. Connection at
the driver enclosure terminal block is illustrated at the bottom of Drawing 184918.
The material for an earth-ground electrode differs from region to region and may
vary according to conditions present at the site. Consult the National Electrical Code
and any local electrical codes that may apply. The support structure of the display
cannot be used as an earth-ground electrode. The support is generally embedded in
concrete, and if it is in earth, the steel is usually primed or it corrodes, making it a
poor ground in either case.
Power Installation
There are two considerations for power installation: installation with ground and
neutral conductors provided, and installation with only a neutral conductor provided.
These two power installations differ slightly, as described in the following
paragraphs:
Installation with Ground and Neutral Conductors Provided
For this type of installation, the power circuit must contain an isolated earth-ground
conductor. Under this circumstance, do not connect neutral to ground at the
disconnect or at the display. This would violate electrical codes and void the
warranty. Use a disconnect so that all hot lines and neutral can be disconnected. The
National Electrical Code requires the use of a lockable power disconnect within
sight of or at the display.
Installation with Only a Neutral Conductor Provided
Installations where no grounding conductor is provided must comply with Article
250-32 of the National Electrical Code. If the installation in question meets all of the
requirements of Article 250-32, the following guidelines must be observed:
+ Connect the grounding electrode cable at the local disconnect, never at the
display driver/power enclosure.
+ Use a disconnect that opens all of the ungrounded phase conductors.
3-4
Mechanical and
Electrical Installation
3.3 Power and Signal Connection
Reference Drawings
Schematic; Multipurpose 4 Col. LED Drvr...................Drawing A-165028
Enclosed Driver, 4 Column Reference ........................Drawing A-184918
4 Column MASC LED Driver Specifications................Drawing A-166216
Quick Install, DF-1020 Gas Price Displays..................Drawing A-189768
Schematic; Gen III Outdoor LED, 8 Column Drvr........Drawing A-177935
Schematic; 16 Col Multipurpose LED Drvr..................Drawing A-179599
8 Column MASC LED Driver Specifications................Drawing A-167237
16 Col. MASC Driver Specification..............................Drawing A-184475
Route power and signal cables into the display from the side or rear. There are
knockouts for
and on the back panels. All power and signal wiring terminates at the driver
enclosure.
Refer to Drawing A-189768 for a complete review of power and signal connections
for Gasoline Price displays. Drawings A-184918, A-167237 and A-184475 illustrate
and provide connection specifications for drivers used in DataMaster Gas Price
displays. The schematics listed above detail both the wiring in the enclosure and
external connections to the display. Power and signal connections, illustrated in
Figure 5 below, are similar for all three drivers.
1
/2" and 3/4" conduit fittings on the sides of all DataMaster cabinets
Figure 5: DataMaster Driver Enclosure with 4-Column Driver
Mechanical and 3-5
Electrical Installation
To gain access to the driver enclosure, open the access door and remove the cover
from the enclosure. Refer to the electrical specifications drawings for the access
location for your sign.
Connect the power and signal cables at the appropriate locations on the driver
enclosure panel, as shown in Drawing A-184918.
The power feeder circuit connects directly to a terminal block in the driver
enclosure. The block is located in the bottom center of both types of driver
enclosure. Refer to the driver illustrations and the schematics, Drawings A-165028,
A-177935 and A-179599, for wiring details.
Route signal cabling to the terminal block on the lower left edge of the enclosure
(see Figure 5). The connections are labeled to permit easy installation. (In the 16column enclosure, the signal block is at bottom center.) For signal cable, Daktronics
recommends 2-pair shielded cable, 22 AWG (Daktronics part number W-1234).
Host/Client and Master/Slave Definitions and Address
Settings
Reference Drawings:
Host/Client and Master/Slave Definitions ............. Drawing A-168376
4 Column MASC LED Driver Specifications......... Drawing A-166216
8 Column MASC LED Driver Specifications......... Drawing A-167237
16 Col. MASC Driver Specifications.....................Drawing A-184475
One driver at each sign installation is designated as the “host driver”. This driver
receives its signal directly from the controller on the Signal In terminals, and it is the
only driver that is connected to the light/temp sensor. The Sign al Out terminals are
used to connect to “client drivers”.
Select the host driver by inserting the Protocol 4 plug into the 5-pin protocol jack
(J20.) For protocol jack location, refer to the driver specifications drawings listed
above.
The 12 V DC terminals connected to the host driver (see “Signal Connections” in
Figure 5) run to the controller junction box. This output is used to power the
DataMaster 100 controller.
All other drivers in the display system are client drivers. These drivers receive signal
from the host driver on the Signal In terminals and can re-drive this signal to other
“client drivers” on the Signal Out terminals.
Some multiple-module signs use “slave displays”. These displays do not contain a
driver and may use either the client or host digit outputs. Refer to Drawing A-
168376 for an illustration of the client/host driver and master/slave display setups.
The address of each driver is set using the address jack (J19), and the address setting
is based on that driver's position in the sign or display system. If a single-line sign is
3-6
Mechanical and
Electrical Installation
used, the address will typically be address “1”. This is the default addr ess plug that is
shipped with each display. In a multiple-module display, the address plug determines
which line of information is shown on the drivers' digits. The address plug for each
line is included in the address plug kit, if applicable.
3.4 Light Sensor Installation
Reference Drawing:
Light Sensor Installation, G3........................................Drawing A-183775
Displays in the DataMaster series use a light sensor to regulate sign dimming
functions. (Dimming involves decreasing overall display intensity, both for better
display viewing and to prolong LED life. The brightness level should be highest
during the day to compete with daylight, and lower at night.) Use Drawing A-
183775 and the following instructions to install the light sens or in your DataMaster
Gasoline Price display. If the sign or sign system has more than one display, install
the light sensor in the host display only.
1. Remove the screws on the front
of the display and open the
hinged access door.
2. Locate and remove the
plastic plug from front panel of
the display, as shown in Figure
6. The location of the plug varies
by model. Refer to the
mechanical specifications
drawings for model-specific
information.
3. There are two 6-32 studs above
and below the plughole. Position
the internal light sensor assembly
on the studs, with the clear lens
toward the front of the cabinet
and the cable at the bottom.
Secure the sensor with the plastic
wing nuts provided with the
assembly kit.
4. Route the signal cable to the driver and insert the 6-postion plug into the
mating jack on the driver, TB1.
5. Close the hinged access doors and replace the screws.
5
/8"
Figure 6: Internal Light Sensor
Mechanical and 3-7
Electrical Installation
Section 4: Display Maintenance
and Troubleshooting
IMPORTANT NOTES:
1. Disconnect power before doing any repair or maintenance
work on the display!
2. Allow only qualified service personnel access to internal
display electronics.
3. Disconnect power when not using the display.
4.1 Cabinet Specifications
Cabinets for the Daktronics outdoor LED digit displays are constructed of heavygauge aluminum. Exact dimensions and weights for each model are listed in the
chart in Section 2. Hinged panels for servicing digits and indicators and for
component access are detailed in each model's mechanical specifications drawing.
4.2 Component Location and Access
For the front-access modules in this series, all internal electronic components and
digits can be reached by opening one of the hinged access doors on the front of the
display. Each door swings outward when the two screws on the display face panel
are removed, as shown in Figure 7. For front and opened views of the displays, refer
to your model's electrical and mechanical specifications drawings, listed in Sections
2.1 and 2.2.
Figure 7: DataTime Time and Temp Display with Door Panels Open
Maintenance and 4-1
Troubleshooting
Component placement varies slightly with each DataMaster model; consult the
model-specific mechanical drawing to determine the layout for your display.
Note: Disconnect power before servicing the display! Disconnect power, too,
when the display is not in use. Prolonged power-on may shorten the life of some
electronic components.
Replacing a Digit
The digit circuit board, the platform for the LEDs, is mounted to the back of the digit
panel. Do not attempt to remove individual LEDs. In the case of a malfunctioning
board, replace the entire digit panel. Refer to Figure 8 below.
To remove a display digit, follow these steps:
1. Open the digit panel as described in the preceding section.
2. Disconnect the power/signal connector from the back of the digit. Release
the connector by squeezing together the locking tabs as you pull the
connector free.
3. The digits are secured to the inside of the panel with fixed machine screws,
spacers, and push nuts. Remove the nuts and lift the digit off the standoff
screws. (The push nuts can be removed in several ways, but Daktronics
recommends using a
9
/32" nut driver.)
Figure 8: Digit Assembly
4-2
Maintenance and
Troubleshooting
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