Lehigh DX3 User manual

DX3 System Manual
Version 1.1
P/N F546
© Lehigh Electric Products Company, 2016

TECHNICAL INQUIRY
The dimming system consists of electrical and electronic components which could cause electrical
shock if tampered with. Only individuals experienced with electrical and electronic equipment should
remove the panels or attempt to service this system.
All questions regarding this equipment should be referred to:
Lehigh Electric Products Company
6265 Hamilton Boulevard
Allentown, PA. 18106-9789
Phone [phone]
Fax [phone]
www.lehighdim.com
WARRANTY
Subject to the terms of this paragraph, the supplier warrants its title to the products sold by it and
warrants to the Purchaser that its products are free of defects in workmanship or material and are in
conformity with applicable specifications and descriptions of the supplier. No claim shall be
maintained hereunder unless the facts giving rise to it are discovered within 16 months from the date of
shipment from the factory, or 12 months after initial energization of said equipment, with the one
expiring first given precedence, and written notice thereof given to the supplier within 30 days of
discovery. The sole and exclusive liability of the supplier, for Breach of Warranty shall be, at its
option, to replace or repair the product or part concerned F.O.B. its factory or such place as it may
designate. The warranties stated in this paragraph are exclusive of all other warranties, written or oral,
statutory, expressed or implied, none of which shall apply to the sale of the suppliers products
hereunder.
DX3 Manual 2

Table of Contents
1 Introduction..................................................................................................................5
1.1 DX3 Dimmer Racks............................................................................................5
1.2 DX3 Architecture...............................................................................................6
1.2.1 Memory..........................................................................................................6
1.2.2 Ride-Thru Feature...........................................................................................6
2 ystem Design and Layout.............................................................................................7
2.1 Typical ystem Riser..........................................................................................7
2.2 Control Panel Detail...........................................................................................8
2.3 Dimmer Control Concepts...................................................................................9
2.4 Precedence.....................................................................................................10
2.5 Dimmer Control ource Example.......................................................................11
2.6 Input/Output Control Concepts.........................................................................13
2.6.1 Input/Output Mapping...................................................................................13
2.7 Backup Cues....................................................................................................14
2.8 Collage............................................................................................................14
2.9 Zones..............................................................................................................15
3 Control tations...........................................................................................................15
3.1 Master Control tations....................................................................................15
3.2 Preset Recall tations.......................................................................................16
3.3 Receptacle tation...........................................................................................16
4 Control Wiring Terminations..........................................................................................17
4.1 DMX A & DMX B Connections............................................................................17
4.2 Collage Architectural Connections.....................................................................18
4.3 Fire Alarm Input..............................................................................................18
4.4 Rack ID and DIP witch Terminators.................................................................19
4.5 DMX Out Connections......................................................................................19
4.6 Phase Loss Terminals (Optional).......................................................................20
4.7 Ethernet Connections.......................................................................................20
5 AV ystem Integration..................................................................................................21
6 Connecting to a PC for DxDirector DX3..........................................................................21
6.1 U B Cable.......................................................................................................21
6.2 Ethernet Connection........................................................................................21
7 Rack Control Interface Operation (RCI).........................................................................22
7.1 Enter/Esc Button..............................................................................................22
7.2 Menu Navigation..............................................................................................22
7.3 Dialog Navigation.............................................................................................23
7.4 Main menu - File..............................................................................................23
7.4.1 File – ave....................................................................................................24
7.4.2 File – Load....................................................................................................24
7.4.3 File – afe Remove........................................................................................25
7.4.4 File – Filenames............................................................................................25
7.5 Main menu – Config.........................................................................................25
DX3 Manual 3

7.5.1 Config - Time/date........................................................................................25
7.5.2 Config - Network...........................................................................................26
7.5.3 Config - Info.................................................................................................26
7.6 Main menu – napshot.....................................................................................26
7.6.1 napshot – Control........................................................................................26
7.6.2 napshot – Fade Time...................................................................................27
7.7 Main menu – Backup........................................................................................27
7.7.1 Backup – MRAM.............................................................................................27
7.7.2 MRAM - ave.................................................................................................27
7.7.3 MRAM - Load.................................................................................................28
7.7.4 Backup – Flash..............................................................................................28
7.7.5 Flash - ave...................................................................................................28
7.7.6 Flash – Load..................................................................................................28
7.8 Main Menu – Focus Check................................................................................29
8 Operation and Maintenance..........................................................................................30
8.1 Powering ystem On & Off...............................................................................30
8.2 Dimmer Control Card.......................................................................................30
8.3 CM – ystem Control Module Details...............................................................31
8.3.1 Ride-Thru Disable..........................................................................................31
8.3.2 Core Module Removal....................................................................................32
8.4 CM Dipswitch.................................................................................................32
8.5 CM Reset.......................................................................................................32
8.6 Control Backplane Details.................................................................................33
8.7 Cleaning..........................................................................................................34
8.8 Electrical Connections......................................................................................34
8.9 Ventilation.......................................................................................................34
8.10 Off-Line Configuration torage........................................................................34
9 Auxiliary Control Boards...............................................................................................35
9.1 Dry Contact AV Interface Board (P/N C1470).....................................................35
9.2 Fluorescent/LED 0-10vdc Control (P/N C1469)...................................................36
9.3 Analog Input Control Board (P/N C1549)...........................................................37
10 Troubleshooting.........................................................................................................38
DX3 Manual 4

1 Introduction
The DX3 is a high performance fully digital dimming system capable of controlling up to 512
dimmers. It is designed for theatrical or architectural applications, or a combination of both.
This manual begins by introducing the DX3 system architecture as well as features and how they work.
Please refer to the DxDirector DX3 manual for details on how to set up and program all the features
into your rack.
1.1 DX3 Dimmer Racks
Typical DX3 Racks are shown in Figure 1. This shows the three size racks that characterize the DX3
family. The DX3-120 can hold up to 120 dimmers, the DX3-60 up to 60 dimmers and the DX3-30 up
to 30 dimmers. These dimmers can be a combination of regular phase control SCR dimmers, reverse
phase IGBT dimmers or non-dim relays. Most dimmer/non-dim modules are dual modules. Racks are
typically 3-phase, but can accommodate single phase. Both 120/208vac and 277/480vac rack systems
are available.
DX3 Manual 5
Figure 1: DX3 Dimmer Racks
10 / 100
Ethernet
1
7
*
4 6
3
#
9
DMX A
DMX B
2
5
O
8
Mode
Station
10 / 100
Ethernet Mode
Station
6
3
#
9
2
5
O
8
1
7
*
4
DMX A
DMX B10 / 100
Ethernet Mode
Station
6
3
#
9
2
5
O
8
1
7
*
4
DMX A
DMX B

1.2 DX3 Architecture
The DX3 rack takes in the following protocols:
Two DMX512A data links
Three Lehigh Collage architectural links for up to 128 zones of control over 16 areas
On-board Ethernet for rack communication or DMX over Ethernet
Dry contact for fire alarm input
On-board bypass switch to allow dimmers to turn on without the electronics module
Additional I/O modules are available for numerous other input signals
Output signals include the following:
Phase loss signal for use with emergency sensing
DMX512A for driving other DMX-enabled devices
Up to four racks can be slaved together to provide full control over a complete system.
1.2.1 Memory
Memory is stored in each dimmer rack that houses an SCM control module in electronic Magnetic
RAM (MRAM). This provides a full backup of the rack configuration so that SCM control modules
can be swapped out without having to worry about losing the memory. Additionally, there is a Flash
memory on each SCM control module as well as the ability to store the configuration on a removable
USB drive. Use the Rack Control Interface menus in Section 7 to access each of these memory
locations for both storing and recall. It is a good practice to save your configuration whenever you
make changes to the presets or to the configuration.
1.2.2 Ride-Thru Feature
The DX3 rack has a unique Ride-Thru feature that protects the system from momentary power outages
by holding up the power to the main processor for a minimum of 8 seconds to both reduce the reboot
time and back up the memory. This feature keeps the power applied to the main electronics via two
“super-caps” and will allow the control to reboot almost immediately (3-4 seconds) upon restoration of
main power. Upon power failure, the electronics immediately backs up the configuration to MRAM
and shuts down the SCM in an orderly fashion, much like a smart UPS will do to your computer.
DX3 relies on a power good signal to indicate if DC power is present or not, and a cap good signal
indicating that the super capacitors are fully charged. DX3 monitors the power good signal for DC
power loss. When this occurs it checks that the cap good signal indicates that the super capacitors are
charged. If cap good is valid, the backup configuration is stored to MRAM. In addition, DX3 also
places the constraint that main power must have been present for at least 10 seconds prior to dropout in
order for it to write to MRAM.
DX3 Manual 6

2 System Design and ayout
2.1 Typical System Riser
Figure 2 illustrates a typical system riser incorporating a theatrical console, architectural controls and
controllable fixtures. While Figure 2 illustrates a single rack at 120/208vac, multiple racks can be
linked together with some racks on 120v and some racks on 277v. This allows for a flexible system
design for multiple voltages and multiple load types.
SB2400 Dimmer Racks and SPB Power Interface Modules may also be controlled via the DMX output
from the main DX3 Rack.
Emergency transfer is available either via a UL1008 transfer switch, a Normal/Emergency dimmer rack
or Normal/Emergency SPB Modules.
DX3 Manual 7
Figure 2: DX3 ystem Riser

2.2 Control Panel Detail
The SCM control module consists of a plug-in assembly with an integral Rack Control Interface. This
interface uses a capacitance touch keypad and data entry slider to allow simple navigation through the
menus. Control operation is described in Section 7 of this manual. Details of the features are as
follows:
•PC Communications USB Port – A USB type B port to allow connection to a computer running
the DxDirector DX3 software for use in setting up configuration, testing and control of the
system
•Graphic LCD Display – A multi-line graphic LCD display to list the menus and commands for
control of the various functions
•Status LEDS
◦DMXA or DMXB LEDS will be lit whenever these DMX ports are active
◦MODE will be lit when communication is present between the SCM and Rack Control
Interface
◦ETHERNET will blink when an Ethernet source is connected and the '10/100' LED will be
lit solid
◦STATION is not implemented
•Flash Drive Port – A USB port used for off-line storage of the rack configuration on a USB
flash drive. Multiple files can be stored, and recalled, all with unique file names
•Micro SD Card Port – A factory port used to install the operating system software
Figure 3: Control Panel Details
DX3 Manual 8
6
3
#
9
1 2
4
7
*
5
O
8
10 / 100
Ethernet ModeDMX A
DMX B Station

2.3 Dimmer Control Concepts
There are six ways to gain control of the dimmers and system functions as highlighted in Table 1
below. Each dimmer can be assigned to one or more of these control sources as described later in this
manual. These control sources are set up in the system configuration which is accomplished with the
PC-based program DxDirector DX3.
Table 1 Control Sources
Control Source
DMXA DMX is a serial stream of data where each piece represents a dimmer
level. DMX sources are typically from theatrical control consoles, but
can also be from other DMX-based architectural controls. DMX
sources typically provide 512 dimmers of data.
DMXB A second DMX universe for additional control
Analog Up to 24 0-10vdc analog inputs are available as an option for use with
slider type controls
Collage Built-in Collage architectural control for use with all Collage Impress
control stations. These are used for preset storage and recall of lighting
scenes across the 16 areas and 128 zones. All 512 dimmers can be
assigned to these Collage zones.
Panic There are two independent panic, or full on, functions. One or both of
these can be assigned to each of the 512 dimmers independently of
anything else that is assigned to them. The PANIC2 signal can be
activated directly on each DX3 backplane, the other can be accessed via
an optional I/O module.
Backup Cue A backup cue is a preset made up of 512 dimmer levels. The DX3 can
store 99 of these cues for recall either via the Rack Control Interface or
through remote button stations on the Collage data link.
DX3 Manual 9

2.4 Precedence
If more than one source is assigned to a dimmer, there has to be some way to define which source
actually has control at any given time. This is referred to as “precedence”. How and when a source
controls a dimmer is programmed by the “precedence selector”. Precedence selectors are used between
two sources or combinations of sources. How sources are paired up is explained in the section that
follows. There are four types of precedence selectors.
1. Highest takes precedence (HTP): This means that, for two sources, only the source that is the
highest will control that dimmer. This is also referred to as pile-on.
2. Take control if the specified DMX input is present: This type of precedence uses the detection
of a DMXA or DMXB signal input to select a source for control. When this type of precedence
selector is used for the Main or Analog/Collage selectors, it is automatically interpreted as any
DMX present whereas this selector in the DMX precedence selector column discerns between
DMXA and DMXB sources.
3. Take Control: This type of precedence uses a programmable input to select which of the two
sources controls the dimmer. There are five take controls available and they may be
programmed to respond to a switch closure, a Collage button, or a set level from any input.
4. Nothing: This precedence indicates that the control is not a combination of two sources, but
rather one source or the other or possibly neither.
Figure 4: Dimmer Control Precedence Chart
Module Phase ID DMXA DMXP DMXB Main P Analog A/C/P Area Zone Low High ND P1 P2
DM1A A 1 1 < 1 < Area 1 Zn-001 0 100 X
DM1B A 2 2 + Area 1 Zn-002 0 100 X
DM2A B 3 3 + 3 < Area 1 Zn-003 0 100 X
DM2B B 4 4 + 4 + Area 1 Zn-004 0 100 X
DM3A C 5 5 + 5 < P1 + Area 2 Zn-061 0 90 X
DM3B C 6 6 < P2 + Area 3 Zn-062 25 100 X X
DM4A A 7 7 + 7 < P3 + Area 2 Zn-063 0 90 X
DX3 Manual 10
DMX Precedence
Selector
Analog/Collage
Precedence
Selector
Main Precedence
Selector
+
Final Dimmer Output

A chart like format is used where dimmer numbers are listed in the left column, and the various sources
of precedence between them are listed in the columns along the right.
Figure 4 shows the pairing of sources for setting precedence. DMXA and DMXB have a main selector
between them and Analog and Collage have a selector between them. The Main Precedence Selector is
between whatever the DMX selector and Analog/Collage selectors provide. The Panic and Backup Cue
(not shown) both pile on to the Main Precedence Selector.
The DMXA, DMXB and Analog control source columns show the number of sources that control the
dimmer. The Collage columns display the zone name and area name, or simply a number if they are
not named. Dimmers included in the Panics are shown with a “X” in that field. Any control source
field that is blank indicates that the contribution to that dimmer is zero.
The legend below indicates how precedence is represented. Refer to Figure 4 for examples.
1. '+' Highest takes precedence
2. '<' or '>' When in the DMX precedence column, this symbol points to the source that has
priority when that multiplex input is present. When this type of precedence selector is used in
the Main Precedence or Analog/Collage selector columns, the pointed source has control when
any DMX signal input is present. DMX being present means that a DMX source is active on
the input, not whether or not the dimmer is set to a level above zero by that DMX source.
3. '<TCn' or '>TCn' This is a “Take Control” where the '<' or '>' points to the source that has
control when the Take Control is on, and the 'n' stands for the number (from 1-5) of the Take
Control input.
4. Blank Space. This indicates that the control is not a combination of two sources, rather just one
source or even none.
2.5 Dimmer Control Source Example
The table shown in Figure 5 illustrates a variety of dimmer control and precedence examples. The
comments in the far right column explain how these sources will control the dimmer.
The source numbers shown in the DMX, analog and Collage Zone columns are random and have no
real significance. This is to point out that there is no restriction on order when assigning sources to
dimmers.
A control source column that has nothing in it simply means that the dimmer is not controlled by that
source. For example, if a dimmer controls a light on stage, it is likely that it will be DMX controlled
only. Likewise, a dimmer that controls a house light may only be controlled by the architectural input
such as Collage or analog. These are strictly generalizations, and may not apply to your system
application.
Dimmers and precedence may be assigned in almost any fashion, with multiple dimmers assigned to
the same source, so you do not need individual sources for each dimmer.
DX3 Manual 11

Figure 5: Control ource Examples
ID Control Source Panics Backup
Cue Comments
Dimmer
Number DMXA P DMXB P Analog Channel P Collage Area, Zone 1 2
1 1 X X DMXA -1 HTP with backup cue.
Panic 2 when active.
2 50 X DMXB-50 HTP with backup cue.
3 P1 X Analog input 1 HTP with backup
cue.
4 Area 1, Zn-001 X Collage Area 1, Zn-001 HTP with
backup cue.
5 3 < P3 DMXA-3 when any DMX
multiplex input present. Analog
input 3 without DMX multiplex.
6 4 + 4 X DMXA-4 HTP with DMXB-4 HTP
with backup cue.
7 P4 + Area 1, Zn-005 Analog input 4 HTP with Area 1,
Zn-005.
8Nothing, dimmer always zero.
9 9 + P4 DMXA-9 HTP with analog input
4.
10 10 <TC1 Area 2, Zn-006 DMXA-10 when TC1 is on,
Collage Area 2, Zn-006 when TC1
is off.
11 20 + 30 + P11 + Area 2, Zn-011 DMXA-20 HTP with DMXB-30
HTP with analog input 11, HTP
with Collage Area 2, Zn-011.
12 12 < 12 DMXA-12 when DMXA link
present, otherwise DMXB-12.
13 P13 <TC3 Area 3, Zn-013 Analog input 13 when TC3 is on,
Collage Area 3, Zn-013 when TC3
is off.
14 14 >TC4 14 DMXB-14 when Take Control 4 is
on, otherwise DMXA-14.
15 P10 < Area 3, Zn-014 Analog input 10 when any DMX
multiplex present, Collage Area 3,
Zn-014 when DMX multiplex is
absent.
16 4 DMX4 when DMXA is present,
otherwise zero.
DX3 Manual 12

2. Input/Output Control Concepts
The DX3 SCM Electronics contain a programmable input-to-output mapping system that allows it to be
custom tailored to each applications' needs with a minimum of external components. Inputs can be an
actual switch closure or a virtual input set up in the configuration, and they can then be used to trigger
an output or precedence selector. Which inputs trigger the output events is fully programmable.
2.6.1 Input/Output Mapping
Figure 6: Input/Output Control Mapping
Input
Source Index Level Switch Types Outputs Aux Control Required Optional Aux Control
Analog 1-24 0-100% All All C1549 n-ANB ---
Panic 1 or 2 --- All All --- C1549 n-ANB
Aux 1-7 --- All All C1470 n-207 ---
DMX A or B 1-512 0-100% All All --- ---
DMX A (or
B) Status A (or B) --- All All --- ---
Any DMX --- --- All All --- ---
Dimmer 1-512 0-100% All All --- ---
Zone Area & Zn # 0-100% All All --- ---
Inputs may be an actual hardware switch input such as an analog signal or auxiliary signal, or they may
be a virtual input such as a Zone# & level, a Panic, DMX status sense, or Dimmer# & level.
Switch types as found in the configuration program are “ON, OFF, TRACK or TOGGLE”.
ON = The specified input will turn on the specified output
OFF = The specified input will turn off the specified output
TRACK = The output switch will track the input signal
TOGGLE = The output switch will toggle between on & off with each successive toggle of the
input.
An output can be either one of the (8) auxiliary outputs, or a virtual output such as Panic or Take
Control. The auxiliary outputs require an additional C1549 control board, whereas the Panic or Take
Controls are virtual.
While there is flexibility in the design of the DX3 system, some of the I/O options require auxiliary
control boards as shown in Figure 6 above. The Control Source Example chart in Figure 5 shows some
of these possibilities and how they can be used.
DX3 Manual 13

2.7 Backup Cues
The DX3 system has 99 cue memories plus blackout that can be stored and/or recalled for later use.
Each cue has an associated fade time from 0-99 minutes in 1-second increments. The cue memories
can be recorded as a snapshot of all 512 dimmer levels, taking into account all the available control
sources. Recording of cues may be initiated from a PC, the dimmer rack, or a control station. All 512
dimmers can be tagged to be included in these backup cue memories.
When the DMX link drops out (that is, if the console is turned off or otherwise the link fails), the lights
will hold the last look for 10 seconds, then fade to blackout over 5 seconds. Should some dimmers be
tagged with a precedence for Collage or analog to take control, these lights will revert back to that
architectural source.
2.8 Collage
The DX3 has built-in support for the Collage multi-room control as a standard. The Collage uses
various stations located throughout the installation to record and/or recall lighting looks known as
presets. The Collage system includes the following features:
•Programmable Patch. Control for up to 512 dimmers through 128 zones using a
programmable patch map. Each zone may be assigned a 7 character name.
•Partitioning. Zones may be partitioned in up to 16 control areas with each area having
exclusive control over the zones assigned to it. Removable partitions between control areas
may be defined so as to combine control areas on command.
•Presets with Fade Time. The Collage can store and recall 24 presets plus OFF and FULL for
each of these 16 control areas. Each preset may assigned a 9 character name with a fade time
from 0-99 minutes in 1 second increments.
•AVariety of Station Types. The Collage is controlled by stations located throughout the
facility. These include stations such as Preset Recall, Programmable Master, Multi-Area
Master, Infra-red, as well as receptacles for portable varieties of any type.
•Control from a PC. A PC may be used to control lights in all areas of a DX3 system. Local
control of one SCM (usually one rack) can be done via the USB port on the master rack.
Network control of many racks can be accomplished by using the Ethernet port on each of the
SCM racks. All this is done using the DxDirector DX3 program.
•Security. Each station may be assigned to one of the 8 lock groups. The stations in that group
will be locked whenever the lock is applied. Preset stations simply get locked or unlocked,
while master stations can have their memory locked (the STORE button is disabled), or
completely locked (all buttons are disabled).
•Scripts. Multiple commands including activating presets, applying locks or combining areas
can be entered into a list called a “Script”. Scripts may be invoked through a button press from
a station, or from a time clock event.
•Chases. A sequence of presets may be faded on with optional hold times to a unique
architectural lighting effect called a “Chase”. They may be invoked through a button press
from a station, or from a time clock event.
DX3 Manual 14

•Time Clock Activation. Events such as activating presets, applying locks, combining areas, or
activating scripts or chases, can be set to go off at any time of day, either an exact time, or a
time relative to sunrise or sunset. Up to 128 of these events can be programmed. Event dates
can be periodic, occurring on certain days of the week and months of the year, or they may be
set to go off on one of the 16 programmable holidays.
•Programmable Button Functions. Any preset, master up, master down or special function
including scripts, chases, locks, panics, take-controls or combines can be assigned to any button
on a recall station. These special functions may also be assigned to a master stations on their
virtual buttons.
2.9 Zones
The Collage system uses a zone as an avenue of control for the dimmer. Each zone may have one or
more dimmers connected to it through the programmable patch. A dimmer to zone patch is not a
physical connection through wires, but rather a record in memory of what zones control which
dimmers. The Collage can control up to 512 dimmers through 128 zones.
3 Control Stations
The Collage architectural system uses several types of stations for recording, modifying and recalling
presets and other functions.
3.1 Master Control Stations
The programmable stations illustrated in Figure 7 are used to create and recall presets.
Figure 7: Master Control tations
DX3 Manual 15
SCROLL
SELECTOFF
FULL
MENU GROUP
STORE
MASTER
PAGE
31 2 54 1076 8 9 1211
OFF
FULL
PAGE
MASTER
GROUP
SCROLL
SELECT MENU
STORE
123456

3.2 Preset Recall Stations
The stations illustrated in Figure 8 are referred to as recall stations. By default, the buttons are used to
recall presets. Each button on these stations may also be programmed to perform a variety of other
functions such as invoking a script, activating a chase, activating a lock group or operating a partition.
They may also be programmed to store and recall backup cues, dimmer source take control and
activating panics.
Figure 8: Recall tations
3.3 Receptacle Station
The receptacle station will accept any of the above station types for the purpose of having a portable
and removable control. This can be useful in applications where a desktop control is desired, or in a
venue with only recall stations on the wall, but having a portable master station for setting presets.
.Figure 9: Receptacle tation
DX3 Manual 16
OFF
MAS TER
FULL
SELECT
SCR OLL
OFF
FULL
OFF
FULL
DIM
1
OFF
5
6
3
4
2

4 Control Wiring Terminations
The DX3 system has inputs and outputs available for multiple protocols and control functions as
illustrated below.
Figure 10: Control Backplane Connections
4.1 DMX A & DMX B Connections
TB6 & TB7 are used to connect the DMX inputs. Note that the “OT” signals are to be used only when
connecting to Lehigh Electric manufactured consoles, as these are pins 4 & 5 of the standard XLR-5
connectors used for DMX. This “OT”, or “over-temp” is activated whenever any dimmer in the rack
exceeds its temperature limits, thus sending a signal to the console that there is an over-temp condition
in the rack.
Figure 11: DMX Connections
DX3 Manual 17

4.2 Collage Architectural Connections
There are three link connections available for the Collage Architectural controls. The system follows
an RS485 multi-drop wiring, with end-of-line termination. The controls can be wired in any order and
on any of the three links (on TB2, 3 & 4), however, they must follow the following rules:
1. Wiring must be from one station to the next without the use of “T-taps” or junction boxes.
2. Cable must be an “RS485” low capacitance cable, such as Belden 9729, Alpha 9360 , West
Penn D2402 or equivalent.
3. Each station must also have (3) #14ga wires, two for power, and the third for equipment ground.
4. All wiring must be in grounded conduit for protection against static and power line events.
5. All stations must be mounted in metal electrical backboxes.
6. All stations of the same type use unique ID numbers, no two shall be alike.
7. Line voltage wiring and wires of other circuits must be kept away from the control wires.
8. Wiring must not be “strapped” or tie-wrapped to conduit of power or other circuits.
9. Shield wire must be insulated and connected at each station before termination to the backplane
terminals.
10. Failure to follow these wiring rules may result in poor performance, intermittent station
operation or the voiding of the warranty.
4.3 Fire Alarm Input
There is a dedicated dry contact input available on TB11 for use with fire alarm systems or BMS
systems. When the terminals are shorted, the system activates “PANIC 2” in the SCM for any dimmer
that is configured to that Panic signal. The input is maintained, and will remain in panic as long as the
terminals remain shorted.
Figure 12: Fire Alarm / Panic Connections
DX3 Manual 18

4.4 Rack ID and DIP S itch Terminators
Each dimmer rack in a system (ie: on a common SCM) must have its own unique ID number to identify
it on the system. There are four possible rack ID's available, as shown in the chart below, set by the
first two DIP switches of SW1. The last six switches are used to terminate the DMX lines. In most
cases, DMX A & DMX B switches will remain terminated. DMX C will be terminated only if the
connection is not used to feed other racks or auxiliary control boards.
Figure 13: Rack ID & Termination DIP witch
4.5 DMX Out Connections
Terminal block TB1 is used to interconnect multiple racks together and to feed DMX through to
auxiliary control boards. The termination DIP switch for this line must be left open unless it is not
connected to another device. The DMX out signal is standard DMX with alternate start codes for the
purpose of communication to each of the dimmer racks.
Figure 14: DMX C Connections
DX3 Manual 19

4.6 Phase Loss Terminals (Optional)
The optional terminals for Phase Loss are available on TB5. This is a dry contact output that is
normally closed whenever all three phases are active. Should any one or more phase drop out, the
contact will open and thus provide a signal for activation of an emergency source. Usually, this contact
is prewired by Lehigh to additional relay circuits that are specific for the particular project.
Figure 15: Phase Loss Terminals
4.7 Ethernet Connections
TB12 & TB13 provide hard-wired connections to access the SCM via Ethernet. The connections are
based on the standard EIA T-568B wiring whereby the orange & green pairs are signals, and the blue &
brown pairs are terminated. This connection can be wired to an Ethernet patch block for access
remotely, or can be connected directly to a computer with either a cross-over cable or a patch cable for
use with the DxDirector DX3 program. Multiple racks may be linked together with an Ethernet switch,
and then networked via the DxDirector DX3 program for control from one software interface.
Each SCM maintains its own IP address, and, by default, is 2.0.0.10, on Subnet 255.0.0.0. The IP
address can be changed to anything you want, so that the system can live on an already established
network. Directions for changing this IP address are found in Section 7 of this manual. Directions to
connect to DxDirector DX3 are found in the DxDirector DX3 manual.
Figure 16: Ethernet Wiring
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