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Switching Systems Expansion Module Power Equipment
369-647a 1 06.04.12
Softswitch128R Expansion Module
The Softswitch128R Expansion Module adds scalability
to LutronR Softswitch128R switching system. The
Expansion Module allows a system to maintain a
single programming controller and timeclock with an
increased number of switched circuits, panels, and
control stations.
Features
•Providesincreasednumberoflinks:3linkswithupto
32controlstationsperlink,96controlstationstotal
per system.
•Onemastertimeclockandoneprogrammingpointfor
the entire expanded system.
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Switching Systems Expansion Module Power Equipment
369-647a 2 06.04.12
Standards
•ULRListed(Reference:ULFileE42071)
•CSACertied
•SeismicCertied(TestMethodAC156.ReferenceOSHPDPreapprovalOSP-0215-10)
•Othercerticatesmayapply
Power
•Inputvoltage:120/277V~or220-240V-50/60Hz
•Linkvoltage:24V-FullWave
System Communication and Capacity
•Three(3)daisy-chained,low-voltageIECPELV/NECRClass2linksconnectExpansionModuletoswitching
panels and control stations
•OneExpansionModulepersystem
Physical Design
•Enclosure:NEMA-Type1,IP-20protection;16U.S.GaugeSteel.Indooruseonly.
•Weight:27lb(13kg)
•SeismicCertificationLimits:S
DS
=2.5g,z/h=1.0,I
P
=1.5.ContactLutronfordetails.
Mounting
•Surfacemountorrecessmountbetween16in(40cm)studs
Environment
•32to104°F(0to40°C).Relativehumiditylessthan90%non-condensing.
Model Numbers
 ModelNumber FeedVoltage
 XPS-E-120/277-FT 120or277V~
 XPS-E-240FT-CGP1728 220-240V-
Specifications
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Switching Systems Expansion Module Power Equipment
369-647a 3 06.04.12
Dimensions
Alldimensionsshownas:in(mm).
TopView
LeftSideView
RightSideView
FrontView
BottomView
9.25(235)
10.50(267)
1.62(41)
0.95(24)
6.75(171)
14.00
(356)
17.50
(445)
4.625
(117)
10.00(254)
4.15
(105)
0.15
(4)
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Switching Systems Expansion Module Power Equipment
369-647a 4 06.04.12
•Forindooruseonly.
•Consultdimensionspageformodulesize,conduitknockouts,andmountingholes.
•Mountwhereambienttemperatureis32to104°F(0to40°C).
•Reinforcewallstructureforweightandlocalcodesasnecessary.
•Mountmodulesoline(mains)voltagewiringisatleast6ft(1.8m)fromsoundorelectronicequipmentandwiring.
•Mountwithin7°oftruevertical.
Surface Mounting
•Lutronrecommendsusing0.25in(6mm)
mounting bolts.
•Leave1.25in(38mm)clearanceoneachsideof
moduleforcover.
Recess Mounting
•Mountmodulefromflushto0.125in(3mm)below
finished wall surface.
•Leave1.25in(38mm)clearanceoneachsideof
moduleforcover.
FrontView SideView
FrontView SideView
Mounting
FeedWiring
IECPELV/
NECRClass2
Wiring
FeedWiring
IECPELV/
NECRClass2
Wiring
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Switching Systems Expansion Module Power Equipment
369-647a 5 06.04.12
H
H
H
HH
H
N
N
N
{
Wiretoeitherthe120V~ or
the277V~ feed terminals,
not both. The terminals for
theunusedvoltagewillremain
empty.
* 120V~Hotterminalis
protected by an internal
fuseincase277V~ is
mistakenlyapplied.Aspare
fuse is also supplied in the
module.
120V~
Feed
277V~
Feed
OR
120V~*
277V~
120V*
120V*
120V*
Ground
Ground
Neutral
Neutral
Donotwireto
these terminals
Wiring Overview - 120/277 V~
XPS-E-120/277-FTmodelnumbermaybewiredwitheither120or277V~.
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Switching Systems Expansion Module Power Equipment
369-647a 6 06.04.12
•Daisy-chaintheExpansionModuletotheIECPELV/NECRClass2Linkthatconnectsswitchingpanelstocontrol
stations.
•Therearethreeseparatedaisy-chainlinks.
•Makedaisy-chainconnectionstothelow-voltageIECPELV/NECRClass2Linkterminalsinsidethe
Expansion Module.
•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.
•LEDsA,B,andClightwheneachofthetheIECPELV/NECRClass2Linksareinstalledcorrectly,respectively.
LEDsblinkoncepersecond.
•InstallLinkTerminators(LT-1)atthestartandendofeachIECPELV/NECRClass2Link.
Important Notes
•TheMasterSoftswitch128RPanelmaybeanyonepanelonthethreelinks.AllSoftswitch128RPanelshavethe
capability to be a master.
•32ControlStationsmaybeinstalledperlink.
•Itispermissibleforalinktoconsistofonlycontrolstations.
•TheExpansionModulemayormaynotbeattheendofanycontrollink.Itcanbeconnectedinthemiddleof
the link.
IECPELV/NECRClass2wiringlinkrequires:
•Two12AWG(2.5mm
2
)conductorsforcontrolwiring.
•Oneshielded,twistedpair18AWG(1.0mm
2
)fordatalink.
Master
XPS
Panel
Remote
XPS
Panel
Remote
XPS
Panel
Expansion
Module
LinkA
Link B
LinkC
Control
Station
Control
Station
Control
Station
Control
Station
Control
Station
Control
Station
Control
Station
To additional
ControlStations
andPanels
To additional
ControlStations
andPanels
To additional
ControlStations
andPanels
Low-Voltage IEC PELV/NECR Class 2 Wiring
Example of IEC PELV/NECR Class 2 Wiring
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SPECIFICATION SUBMITTAL Page
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Switching Systems Expansion Module Power Equipment
369-647a 7 06.04.12
IEC PELV/NECR Class 2 Wiring: Expansion Module to Switching Panel
5D4321
1234D5
ControlWiring
(2)12AWG
(2.5mm
2
)
1:Common
2:24V-
DataLink
(1)shielded,
twisted pair
18AWG
(1.0mm
2
)
3:MUX
4:MUX
(1)18AWG
(1.0mm
2
)
5:SenseLine
Shield/Drain
Softswitch128R
Expansion Module
Softswitch128R
controller
To additional
panels and
control stations
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SPECIFICATION SUBMITTAL Page
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Switching Systems Expansion Module Power Equipment
369-647a 8 06.04.12
•Two12AWG(2.5mm
2
)conductorsforcommon(terminal1)and24V-(terminal2).Thesewillnotfitin
terminals.Connectasshown.
•Onetwisted,shieldedpair18AWG(1.0mm
2
)fordatalink(terminals3and4).
•ConnectDrain/Shieldasshown.DonotconnecttoGround(Earth)orWallstation/Controlinterfaces.
Connectthebaredrainwiresandcutofftheoutsideshield.
•IfEmergancypanelsarepresentinthesystem,connectEmergencySenselinetoterminal5onExpansion
Modulelinkterminal(s).
FortheIECPELV/NECRClass2link,useGRX-CBL-46Lorequivalent.Thecableconsistsof:
•Two12AWG(2.5mm
2
)wires.
•One18AWG(0.625mm
2
)shielded,twistedpair.
•One18AWG(1.0mm
2
)wireforEmergencySense.
IEC PELV/NECR Class 2 Terminal Connections
1:Common
(2)12AWG
(2.5mm
2
)
2:24VFW
(2)12AWG
(2.5mm
2
)
18AWG
(1.0mm
2
)
18AWG
(1.0mm
2
)
Drain/Shield
3:MUX
4:MUX
(1)twisted,
shielded pair
18AWG
(1.0mm
2
)
Emergency
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