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®
Job Name:
Job Number:
Model Numbers:
Page
SPECIFICATION SUBMITTAL
369368 Rev. B 1 06.02.11
Control Interfaces
GRX-IO
GRX-IO Control Interface
Description
•IntegratesaGRAFIKEye®lightingcontrolsystem
with equipment that has a contact-closure I/O,
including:
– Motion and occupant sensors.
– Timeclocks and push buttons.
–Motorizedprojectionscreens,skylights,window
shades, and movable walls.
– AV equipment.
–Securitysystems.
•Maybeprogrammedtocontrolanycombinationof
onetoeightGRAFIKEye® 3000 or 4000 Series
control units.
Inputs/Outputs
•Providesfiveinputsandfiveoutputs.
•Providesbothnormallyopen(NO)andnormally
closed(NC)contacts.
•Usingtheinputs,contactclosuresinother
equipment can operate control units to:
– Select scenes.
– Adjust scenes to reflect status of movable walls.
–Turnlightsonoroffbasedonroomoccupancy.
•Usingtheoutputs,scenechangesincontrolunits
can:
– Trigger outputs to control other equipment.
– Provide status feedback to other equipment.
1
®
Job Name:
Job Number:
Model Numbers:
Page
SPECIFICATION SUBMITTAL
369368 Rev. B 2 06.02.11
Control Interfaces
GRX-IO
Power
•IECPELV/NEC® Class 2
•Operatingvoltage:12V 200 mA
24 V 100 mA
•Provides2-wayinterfacebetweenpresetlighting
controlsanddrycontactclosuredevices.
•Provides5inputsand5outputs.Outputscan
control other manufacturers’ equipment.
Operating Modes
•Sceneselection
•Specialfunctions
•Partitioning
•Occupantsensor
Status LEDs
Five Status LEDs light when associated output is
active(on).
System Communications and Capacity
IEC PELV/NEC® Class 2 wiring connects GRX-IO
Interface to control units and other components.
Countstowardsystemmaximumof16
wallstations/controlinterfaces(3poweredfrom
oneGRAFIKEye®controlunitwithoutexternal
12 V powersupply;GRX-IOcountsastwo
devicestowardthemaximumofthreeconnected
tooneGRAFIKEye®3000controlunit).
Environment
32-104°F(0-40°C).Relativehumiditylessthan
90% non-condensing.
Five Input Terminals
•Acceptmaintainedinputsandmomentaryinputs
with 40 msec minimum pulse times.
•Off-stateleakagecurrentmustbelessthan
100 µA.
•Opencircuitvoltage:24V maximum.
•Inputsmustbedry
contact closure, solid state, open collector, or
active-low(NPN)/activehigh(PNP)output.
- Open collector NPN or active-low on-state
voltage must be less than 2 V and sink
3.0 mA.
- Open collector PNP or active-high on-state
voltage must be greater than 12 V and
source 3.0 mA.
Five Output Terminals
•Providemaintainedormomentary(1-second)
outputs.
•TheGRX-IOisnotratedtocontrolunclamped,
inductive loads. Inductive loads include, but are
notlimitedto,relays,solenoids,andmotors.To
controlthesetypesofequipment,aflybackdiode
mustbeused(DCvoltagesonly).Seediagram
below.
Specifications
+
-
DC
Inductive
Load
Flyback
Diode
GRX-IO Output
Supply
Voltage
0-24 V
0-24 V
Resistive
Load
1.0 A
0.5A
R
2
®
Job Name:
Job Number:
Model Numbers:
Page
SPECIFICATION SUBMITTAL
369368 Rev. B 3 06.02.11
Control Interfaces
GRX-IO
Mode DIP Switches Contact closures invoke: Inputs: Outputs:
5678Input1Input2Input3Input4Input5
Scene Scene 1 Scene 2 Scene 3 Scene 4 Off Maintained or Maintained
Selection Scene5Scene6Scene7Scene8Offmomentary
Scene 9 Scene 10 Scene 11 Scene 12 Off
Scene13Scene14Scene15Scene16Off
Scene1Scene2Scene3Scene4OffMaintainedorMomentary
1
Scene5Scene6Scene7Scene8Offmomentary
Scene 9 Scene 10 Scene 11 Scene 12 Off
Scene13Scene14Scene15Scene16Off
Special Sequence Zone lockout Scene
“Panic” mode
Not Maintained Maintained
Functionsscenes1-4allowslockoutturnslightsused only
Sequencetemporarydisablesfullon(to
scenes5-16adjustments.scenescene16),
Sequence No changes to buttons.
locks Control
MomentaryonlyMaintained
scenes 1-4 preset scenes. Units.
Sequence
scenes5-16
Partitioning
2
Wall1Wall2Wall3Wall4Wall5MomentaryonlyMaintained
Wall1Wall2Wall3Wall4Wall5MaintainedonlyMaintained
Occupant SensorinputtogglesControlUnitsbetweenscene1andoff.Maintainedonly
3
Maintained
Sensor Sensorinputturnslightsoff.Occupantmustturnlightson.Maintainedonly
3
Maintained
•OperatingmodecanbeselectedbysettingDIP
switches5through8.Inputsandoutputsmaybe
maintainedormomentaryasindicated.
•Maybeprogrammedtocontrolanycombinationof
onetoeightGRAFIKEye® 3000 or 4000 Series
control units.
•Forsceneselectionandspecialfunctionmodes,
onecontrolunitoragroupofcontrolunitsmay
beassignedtobeoperatedbytheGRX-IO.
•Withpartitioningandoccupantsensormodes,a
different control unit or group of control units
maybeassignedforeachI/Oclosure.
1
Scenes trigger the position of motorized window shades or projection screens.
2
Movable walls toggle control units between “in combination” and “independent” modes of operation. Each input is set up to
operatethecontrolunitsassociatedwithamovablewall(orwalls).
• When a motorized wall opens, the wall’s switch contact closes. The control units now work “in combination.” Scene changes
at one control unit occur on all the associated control units.
•Whenawallcloses,theswitchcontactopens.Thecontrolunitsreturntoindependentoperation.
3
Ifanoccupantsensorinputprovidesmomentaryclosure,usesceneselectionmode.
Operating Modes and DIP Switch Settings
3
®
Model Numbers:
Page
SPECIFICATION SUBMITTAL
369368 Rev. B 4 06.02.11
Control Interfaces
GRX-IO
Job Name:
Job Number:
Dimensions
2.47 in
(62.7 mm)
3.75 in
(95.3 mm)
4.26 in
(108.2 mm)
5.26 in
(133.6 mm)
1.06 in
(26.9 mm)
Mounting holes
Mounting
1. Mount the control interface directly on a wall, as
shown in the Mounting Diagram, using screws (not
included). When mounting, provide sufficient space
for connecting cables.
The unit can also be placed in the LUT-19AV-1U AV
rack using the screws provided with the unit. The
LUT-19AV-1U will hold up to four units.
If conduit is desired for wiring, the LUT-5x10-ENC
can be used to mount one unit.
2. Strip 4 in (10 mm) of insulation from wires. Each data
link terminal will accept up to two 18 AWG
(1.0 mm
2
) wires.
3. Connect wiring as shown in the Wiring Diagram
(next page). LED 1 lights continuously (Power) and
LED 7 blinks rapidly (Data Link RX) when the IEC
PELV/NEC® Class 2 Data Link is installed correctly.
LUT-19AV-1U
Wire Strip Length
4 in
(10 mm)
5.26
4.263.75
2.50
1.06
Control Interface
Wall
Mounting Diagram
LUT-5x10-ENC
0.25
(6.4)
0.34 (8.6)
dia.
0.18 (4.6)
dia.
0.18 (4.6)
dia.
#6 or #8 (M3 or M4)
screw recommended
(not included)
Mounting Hole Detail
Dimensions: in (mm)
4
®
Job Name:
Job Number:
Model Numbers:
Page
SPECIFICATION SUBMITTAL
369368Rev.B506.02.11
Control Interfaces
GRX-IO
•Daisy-chaintheGRX-IOInterfacetotheIECPELV/NEC® Class 2 wallstation link that
connects to the processor panel.
•Makedaisy-chainconnectionstotheIECPELV/NEC® Class 2 MUX Link terminals on
front of GRX-IO interface.
•DonotuseT-taps.Runallwiresinandoutoftheterminalblock.
•Eachterminalacceptsuptotwo18AWG(1.0mm
2
)wires.
•ConsultGRAFIKEye® control unit specification submittal for more details.
IEC PELV/NEC® Class 2 Wiring
GRX-IO
Program
button
1 2 3 4 5 6 7
DIP switches
LED 1: CCO 1
LED 2: CCO 2
LED 3: CCO 3
LED 4: CCO 4
LED 5: CCO 5
LED 6: Unused
LED 7: Link status
Note: LED is ON when CCO NO
(normally open contact) is closed.
4 3 2 1
Connectors hold one 28 to 16 AWG
(0.08to1.5mm
2
)wire
Data Link (to control
units, processors, and
wallstations)
4: MUX
3: MUX
2: 12 or 24 V
1: Common
CCO 1 NC
CCO 1 NO
1-2 COM
CCO 2 NC
CCO 2 NO
CCO 3 NC
CCO 3 NO
3-4 COM
CCO 4 NC
CCO 4 NO
CCO 5 NC
CCO 5 NO
5 COM
CCI 1
CCI 2
CCI 3
CCI 4
CCI 5
COM
5
®
Job Name:
Job Number:
Model Numbers:
Page
SPECIFICATION SUBMITTAL
369368 Rev. B 6 06.02.11
Control Interfaces
GRX-IO
IEC PELV/NEC® Class 2 Terminal Connections
• Install in accordance with all applicable regulations.
• Do not connect line voltage/mains power to device.
• This control can use IEC PELV/NEC® Class 2 wiring methods. Check with your local electrical inspector for
compliance with national and local codes and wiring practices.
• Makedaisy-chainconnectionstotheIEC PELV/NEC® Class 2 data link terminals on the end of the control interface.
• DonotuseT-taps.Runallwiresinandoutoftheterminalblock.
• Eachterminalacceptsuptotwo18AWG(1.0mm
2
) wires.
HOT/LIVE
CU WIRE ONLY
CLASS 2
1 2 3 4
USA
Class 2
IEC
PELV
To additional wallstations/control interfaces
(16maximum;3poweredfromoneGRAFIK
Eye® control unit without external 12 V
powersupply;GRX-IOcountsastwodevices
toward the maximum of three connected to
oneGRAFIKEye®3000controlunit)
Control Interface Wiring:
GRX-3000 or GXI-3000 Control Unit
RearViewofGRAFIKEye® Control Unit
(GRX-3106shown)
Use Lutron Cable
GRX-CBL-346S
or equivalent
Data
Link
Data Link:
4: MUX
3: MUX
One shielded, twisted
pair18AWG
(1.0mm
2
) for data link
(terminals 3 and 4)
IEC PELV/NEC® Class 2
Power wiring:
2: Power
1: Common
Two18AWG(1.0mm
2
) conductors
for Common (terminal 1) and
12 V (terminal 2)
IEC PELVNEC® Class 2
Power wiring:
1: Common
2: 24 V Power
(2)18AWG(1.0mm
2
) pigtails,
6 in (152 mm) maximum length
D:Drain/Shield
(2)12AWG
(2.5 mm
2
)
(2)12AWG
(2.5 mm
2
)
Data Link: (1) shielded, twisted
pair18AWG(1.0mm
2
)
4: MUX
3: MUX
Control Interface Wiring:
GRX-4000 Control Unit
(Data Link connection shown)
Note: 12AWG(2.5mm
2
) conductors
for Common (terminal 1) and 24 V
power (terminal 2) will not fit in
terminals;use18AWG(1.0mm
2
)
pigtails (< 6 in/152 mm).
Note: Do not connect drain/shield to
ground (earth) or wallstation/control
interfaces. Connect the bare drain
wires and cut off the outside shield.
Use Lutron Cable
GRX-CBL-46L
6
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Completed 19 July 2020

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