Specifications

Maxiva ULX Series
November 11, 2013
2‐21
888‐2628‐300 WARNING:Disconnectprimarypowerpriortoservicing.
Copyright©2013,HarrisBroadcast
2.11.3 RFMuteExternalInterlockConnections(J2)
Thereare2interlockconnectionsthatcanbeusedtoapplyatemporaryRFmutecondition(vs.afault‐offcondition
asdiscussedabove).ThetransmitterwillRFmutewhentheinterlockisopenandautomaticallyunmutewhenthe
interlockisrestoredtoaclosecondition. Theseare:
• J2‐5toJ2‐6(fortestloadthermalinterlock)
• J2‐11toJ2‐12
Warning
RF MUTE INTERLOCKS SHOULD NOT TO BE USED IN ANY SITUATION WHERE
PROTECTION OF PERSONNEL IS DESIRED.
Figure 2-10 Customer I/O Board - Top of Transmitter
ThetransmitterisshippedfromthefactorywithjumpersintheRFmuteandsafetyinterlockpositionsonJ2which
allowthetransmittertooperatewithoutexternalinterlockconnected.
2.12 CoolingSystemActivation
Theliquidcoolingsystem(externaltothetransmitter)consistsofanaircooledheatexchanger,twopumpsandan
integratedelectricalcontrolsystem.Theheatexchangercapacityandsizepumpsizeswillvarydependingonthe
numberofPAmodulesinthePAcabinet.
Fancontrolisaccomplishedviaelectronicinverter/controllers(oneperfan)inthepumpcontrolpanel.The
controllersvaryfanspeedbasedoncoolanttemperaturemeasuredinthepumpmoduleoutletpipe.
Pumpoperationisautomaticallycontrolledusinginverter/controllers(oneperpump).Therearetwomodesof
pumpoperation,“Local”,and“Remote”.Theinverter/controllersinterfacewiththetransmitter’s“PumpControl
Interface”(PCI).Theinverter/controllersreceivesignals fromthePCIandsendsignalstothePCI.
Note
For additional cooling system start up information see the pump module, heat exchanger and inverter/
controller technical manuals. Additional cooling system information is also provided in
Appendix B (this
manual).
J2 Interlock
Connector