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MODEL #
RACK DIMENSIONS
MAXIMUM MODULE COUNT
(HxWxD)
With Main Breaker
Main Lugs Only
MX-12
36” x 21” x 21”
12
MX-24
48” x 21” x 21”
12
24
MX-48
84” x 21” x 21”
36
48
25
30
35
40
1.01 MX Dimmer Bank 5
General
A.
The installation rack shall be the MXas manufactured by Electronics Diversified, Inc. The fully digital dimmer
rack shall contain up to 48 dimmer module spaces. MXrack systems shall be UL and cUL listed and shall be so
labeled when delivered to job site.
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B.
Physical
1. The MXdimmer rack shall be a free-standing, dead front switchboard, substantially framed and
enclosed with code gauge steel panels. All rack components shall be properly treated, primed
and finished. Exterior surfaces shall be finely textured with scratch resistant, two-part
polyurethane or equal. Removable top, side, and bottom panels shall facilitate conduit
termination.
2. Racks shall be available in three sizes, with the following configurations:
3. Racks shall be designed for front access to allow back-to-back or side-by-side installation. 20
4.
Racks shall be designed to allow easy insertion and removal of all modules without the use of
tools. Internal supports shall be provided for precise alignment of dimmer modules into power
and signal connector blocks. With modules removed, racks shall provide clear front access to
all load, neutral and control terminations. Racks that require removable panels to access
load, neutral or control terminations shall not be acceptable.
5. An optional buss kit shall be available from the factory to allow adjacent racks to be powered
by a single line feed.
6. The rack shall be configurable to accept mixed dimmer types and sizes throughout the rack.
7. Each rack shall provide a lockable full-height door containing an electrostatic air filter that shall
be removable for easy cleaning. Forced air cooling of the rack shall be provided via a low
noise fan. The fan shall draw all intake air through an integral electrostatic air filter, over the
surfaces of the module housing and out of the rack. The fan shall maintain all components at
proper operating temperature when dimmers are under full load, provided the ambient
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temperature of the dimmer room does not exceed 40
C (non condensing). The fan shall turn
on whenever any dimmer in the system is activated. In the event of an over-temperature
condition, only the affected dimmer module(s) shall shut down and an LED indicator shall
appear on the affected dimmer module(s) and control module. The fans shall remain on
during thermal shutdown of individual dimmer modules.
8. Each rack shall be supplied with a convenience panel containing a 20 Amp, 120 volt, 60 Hz,
AC (220/240 Volt, 50 Hz) grounded duplex power outlet.
9.
The dimmer rack shall be equipped with an illuminated LCD status beacon. The LCD status beacon shall display current status of the rack and display the following messages:
a. DMX port A or B status.
b. Phase A, B or C is below safe operating voltage.
c. Phase A, B or C is above safe operating voltage. 45
d. Rack has shut down due to improper startup voltage.
e. Over temperature protection has caused a dimmer module to shut down.
f. Ambient temperature is below safe operating temperature.
g. Ambient temperature is above safe operating temperature.
h. Rack’s “Service Mode” is activated. 50
i. Backup look is active/stored.
10. In addition, racks equipped with the optional Dimmer Information System shall display dimmer
module location with the following messages:
a. Load condition.
b. DC detected on dimmer output. 55
c. SCR failure.
Specifier Project Name
16550-1 Project No.: 0296-7000
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11. The dimmer rack shall have the capacity to house an optional system main breaker. The main
12. Each MX dimmer rack shall include a single duplex receptacle (Service Outlet) and 20-amp
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C.
Electrical
1. The rack shall operate on 120/208V, three phase, four wire + ground, 50/60 Hz or 120/240V
2. The rack will have a vertical phase buss rated for 100% continuous duty and a system fault
3. The dimmer modules will be sequentially numbered, labeled and addressed from top to
4. No two consecutive dimmer modules shall be on the same phase. Dimmer racks which
5. All control wiring shall conform to the recommended practices for DMX512 and Ethernet 25
D. Electronics
1. Dimmer control electronics shall be contained in one plug-in control module.
2. A hand-held remote control keypad with LCD display shall be provided for system 30
3. The control module shall include, but not be limited to, the following user indicators:
4. The remote control shall include, but not be limited to, the following displays:
5. The control module shall respond to control changes in less than 25 milliseconds. Dimmer
6.
d. Circuit breaker has tripped. 5
e.
Removal of Dimmer.
f. “No Load” detected.
breaker shall serve as a disconnect for the system. The system shall have an AIC rating
limited by the main breaker. (Specify if required.)
breaker for testing and service equipment. Dimmer racks that do not include a service outlet
for testing and service must provide at a minimum a 20 amp duplex receptacle in the same
location as the dimmer rack.
Single Phase 50/60 Hz. Other voltage and phase options are available upon request.
current rating of up to 100,000 AIC.
bottom.
require electronic addressing to meet this requirment are not acceptable.
specifications as published by USITT and ESTA.
configuration, testing and diagnostics. The LCD shall also display rack status and messages.
a. DMX port A or B status.
b. Phase A, B or C is below safe operating voltage.
c. Phase A, B or C is above safe operating voltage. 35
d.
Rack has shut down due to improper startup voltage.
e. Over temperature protection has caused a dimmer to shut down.
f. Ambient temperature is below safe operating temperature.
g. Ambient temperature is above safe operating temperature.
h. Rack’s “Service Mode” is activated. 40
a. Dimmer display shall allow a dimmer or dimmers to be set at a level. (Control module
shall allow user to set single dimmers or groups of dimmers from remote keypad.)
b. Backup display to program and activate system-wide backup looks.
c. Display information shall allow monitoring of system, rack or dimmer status. 45
d. System information shall provide information about DMX outputs, panic circuits, backup
looks and system name.
e. Rack information shall provide information about rack voltage, starting addresses,
ambient temperature and rack type.
f. Dimmer information shall provide information about dimmer size, type, location, output 50
levels and control source.
g. Setup display shall allow, but not be limited to, configuring of rack addresses, dimmer
firing mode and line compensation values.
outputs shall exhibit no oscillating or hunting for levels.
Dimmer output shall be regulated for incoming line voltages. The control module shall monitor
and adjust each dimmer's output to maintain a constant power to the load. Regulation shall
maintain the desired output voltage for the entire operating range (90-140V AC) with the
exception that the maximum output will be no greater than the line voltage minus dimmer
insertion loss. There shall be no interaction between dimmers or any other equipment in the
system. Line compensation shall be field adjustable on a dimmer-by-dimmer basis to allow for
Specifier Project Name
16550-2 Project No.: 0296-7000
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varying cable length. 5
7.
A minimum of two (2) optically isolated DMX512 inputs shall be provided, allowing overlapping
or separation of any control level. Twenty-five hundred volts (2,500V) of optical isolation shall
be provided between the DMX512 inputs and the control module. Optical isolation shall
protect the DMX512 inputs from a failed control module and shall protect the control module
from failed DMX512 inputs. Systems that do not have optical isolation shall not be
acceptable.
8. The control module shall include a DMX512 input connector for testing purposes. Dimmer
racks which do not include a DMX 512 input connector in the control module must provide at a
minimum a DMX512 input in the same location as the dimmer rack for testing/servicing.
9. There shall be the provision for a minimum of twelve (12) 0-10V analog inputs to allow for 15
analog control of the rack. Each dimmer may be assigned to any one of the twelve analog
inputs. When so supplied, the analog input option shall not reduce the number of incoming
DMX512 signals.
10. With the exception of the optional analog inputs, the control module shall be completely digital
without employing any digital-to-analog de-multiplexing schemes or analog ramping circuits.
Each rack shall, in the event of signal loss, maintain the last level for a user-programmable
time. Systems that do not offer this feature shall not be acceptable.
11. The control module shall contain diagnostic routines to allow the user to test and troubleshoot
the system.
12. A system-wide panic circuit shall be provided. Any dimmer or group of dimmers in any rack 25
may be assigned proportionally to the panic circuit.
13. Each dimmer may be individually assigned a specific address for each DMX512 input.
14. The control module shall be able to record backup looks. Backup looks may be programmed
by any of the following methods: recording current dimmer levels (as set by the console or
other remote programming device); entering dimmer levels on the control module directly;
entering dimmer levels at a remote station.
15. Multiple backup looks may be active simultaneously with inputs operating on a highest take
precedence basis.
16. Two separate and distinct patches shall be available. Selection between the patches shall be
possible by a remote control.
17. All control module system functions may be activated by a hand-held remote control keypad.
Systems that do not offer this feature shall not be acceptable.
18. The control module shall include a single function service switch that shall allow the end user
to bypass the control electronics configuration. When activated the service switch shall drive
all circuits to full output. Control modules which do not include a service switch are not
acceptable.
19. The control module shall accommodate optional remote control devices via the Multi-Link
Network.
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E. Multi-Link Network
1. The Multi-Link Network (MLN) shall provide remote monitoring, programming and backup
functions for the system through any compatible console, PC or hand-held remote device.
System information shall also be displayed on any system interface including the control
module and the devices listed above.
2. The Multi-Link Network shall provide an integral link to connect all racks in the system for
rack-to-rack communication. Information for all configuration and backup looks shall be stored
in all control modules to allow swapping of control modules throughout the system. Systems
not storing all configuration data and backup looks for each dimmer in all control modules shall
not be acceptable.
3. The Multi-Link Network off-line editing software shall allow user programming and remote
storage of the system parameters. These parameters shall include, but not be limited to,
defining rack type, module type, output voltage (Line Compensation) for each dimmer, firing
mode, curve, dimmer numbering and DMX512 port assignments. Systems that do not offer
these user programmable features will not be acceptable.
Specifier Project Name
16550-3 Project No.: 0296-7000
Page 4
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F. Dimmer Information System 5
1.02 MXSCR INCANDESENT Dimmer Modules 20
A. General:
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B.
C. Electrical
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D.
E.
The Dimmer Information System (DIS) option shall allow monitoring of current and output
1.
voltage on a dimmer-by-dimmer basis and shall provide information on dimmer status and
input voltages via the DIS Display.
2. Dimmer specific information, such as dimmer failure or SCR failure shall be displayed as an
error on the control module and the DIS Display. DIS Display messages shall include, but not
be limited to, the following:
a. Load condition.
b. DC detected on dimmer output.
c. SCR failure.
d. Circuit breaker has tripped. 15
e. Removal of Dimmer .
f. “No Load” detected.
3. The control module shall allow the user to record the loads of all DIS dimmers in the system.
1. The dimmer modules shall be the MX as manufactured by Electronics Diversified, Inc.
Furnish and install dimmer modules in types and quantities as shown on the drawings and
specified herein.
Physical
1. Dimmer modules shall be fully plug-in and factory wired. Dimmer modules shall consist of a
heavy duty chassis with integral top, bottom, side and face panels. No tools shall be required
for module removal and insertion.
2. The removal of any single module shall not expose line or low voltage terminations less than 30
six (6) inches from the front of the rack.
3. Each module shall be labeled with the manufacturer's name, catalog number and rating.
Modules constructed of molded plastic for structural support are not equivalent and are not
acceptable. Dimmer modules shall be Ul and cUL Recognized.
4. Dimmer modules shall be available as dual 2.4kw, dual 1.2kw or single 6kw. 35
1. Each dimmer shall provide, but not be limited to, the following: a. The dimmer module shall contain a circuit breaker for each circuit, a solid state switching
module, associated toroidal filters, status indicators and power and control connectors.
b. The dimmer module shall not have any protruding pins subject to physical damage when
the module is not installed.
c. Circuit breakers shall be fully magnetic and UL listed. The trip current shall not be affected
by ambient temperature.
SCR Assembly
1. Each dimmer module shall use a solid state module (SSM) consisting of two silicon-controlled
rectifiers (SCRs) in an inverse parallel configuration and all required gating circuitry on the
high voltage side of an integral, opto-coupled control voltage isolator. The (SSM) shall be
thermally protected, independent of the control module.
Filtering
1. Each dimmer shall have a toroidal, copper-wound, iron-core, high performance choke. The
rise time ratings for a 2k dimmer shall be as noted in the manufacturer's oscilloscope data, but
in no case shall be less than the following:
350 Microseconds (Standard)
Watts Rise Time
1000 (8.33A) 300 Microseconds
Specifier Project Name
16550-4 Project No.: 0296-7000
Page 5
1500 (12.5A) 325 Microseconds 5
Watts
Rise Time
1000
400 microseconds
1500
450 microseconds
2400
500 microseconds
2400 (20A) 350 Microseconds
500 Microseconds (High Performance)
2. All Rise Time measurements are between 10%-90% with dimmer output at 50%. Alternate 10
manufacturers must supply either high performance chokes or certified test data ensuring
compliance with the above.
F. Performance
1. At the maximum rated load with 120 volts input the dimmer shall have an insertion loss of no 15
more than 3.8 volts rms. The maximum heat loss for each 2.4 kw dimmer shall be no greater
108 BTU's per hour per connected kilowatt of load.
1.03 MX Universal Fluorescent Dimmer Module
A. General:
1. The dimmer modules shall be the MX UFD as manufactured by Electronics Diversified, Inc. 20
Furnish and install dimmer modules in types and quantities as shown on the drawings and
specified herein.
B. Physical
1. Dimmer Module chassis shall be constructed of heavy-gauge (.063) sheet aluminum formed
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so to integrate all sections without exposing any electrical components to the exterior. Dimmer
modules shall be fully plug-in and factory wired. No tools shall be required for module removal
and insertion.
2. Module dimensions shall be: 16.25" w X 1.126" h X 6.880" d. Construction shall be such that
no line nor low voltage connections are within five (5) inches of the front of the module. Input
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and output connections shall be flush mounted.
3. Modules of plastic construction or exposed live electrical components upon removal are not
equivalent and are not acceptable.
4. The modules shall be entirely painted on the exterior with non-lead gray polyurethane enamel.
Nomenclature shall be black, permanent paint, applied via silk-screen.
C. Electrical 35
Each dimmer shall provide, but not be limited to, the following:
1.
2. The front panel shall indicate manufacturer, model, and the number and capacity of the
module dimmer (s). This panel shall allow monitoring of dimmer status via lighted display. This
display shall include a separate indicator of Fault status.
3. The dimmer shall be protected against overcurrents, and withstand inrush currents, hot-40
patches and short circuits of 0.02 ohms or more without damage. The dimmer shall employ
fully magnetic primary circuit breakers, UL listed, rated at 100% capacity, with must trip
capacity @ 125%.
4. Except for circuit breakers, the module shall contain no moving parts. The module shall
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employ a heatsink with thermal sensor, and silicon- controlled rectifiers. The SCRs shall be
configured in inverse parallel.
5. The solid state switch devices shall be mounted in substrate designed for maximum heat
dissipation. The devices so mounted shall include an optical isolator, a snubbing network, and
necessary gating circuitry on the high voltage side of a integral, optically coupled control
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voltage isolator providing a minimum of 2500 V rms. isolation between line and control in the
switch device.
6. The solid state module shall be thermally protected independent of the control module. There
shall be a shut down circuit. The circuit shall activate when the heatsink temperature exceeds
85 degrees centigrade. This circuit shall restart automatically when temperature drops to safe
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levels.
7. All load circuit wiring shall be constructed of tin-coated, stranded copper wire, encased in
Specifier Project Name
16550-5 Project No.: 0296-7000
Page 6
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insulation, in compliance with the National Electrical Code in all applicable specification. The 5
module shall be recognized by Underwriters Laboratories.
8. The module shall carry two dimmer circuits of 20 amps each. Each circuit shall carry a
maximum of 32 ballasts.
D. Performance
1. The dimmer shall operate over an input range of 90-140 VAC, 50/60 Hz. Standard, nominal 10
input shall be 120VAC, 50/60Hz, unless otherwise specified at the time of manufacture.
2. The standard dimmer shall have an insertion voltage drop of no more than 3.4 volts rms. at
the maximum rated load with 120 VAC input. The 2.4kw rated SCR heat loss shall not be
greater than 100 BTU per hour per kilowatt of connected load.
3. The dimmer control voltage shall be internally switchable at 0-10 and / or 0-120 volts. The 15
dimmer shall be designed for use with digital memory controllers employing USITT standard
DMX 512 protocol.
4. The module control connectors shall be constructed such that a module of a greater capacity
cannot be substituted nor operated in that position.
5. The dimmer curve shall be any one of the following: conform to the Square Law, Linear curve, 20
or such a profile as is digitally programmed by the user. Any given control setting shall give
the same dimmer output regardless the direction of control movement. The dimmer shall also
function as a non-dim or dimmer for incandescent and inductive loads.
E. The dimmer module shall be the MX Universal Fluorescent Dimmer Module
Electronics Diversified, Inc., Hillsboro, Oregon, USA.
as manufactured by
Specifier Project Name
16550-6 Project No.: 0296-7000
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