Qtech-data-systems Wireless Point to Point (WP2P) - Digital I__O Manuel d'utilisateur télécharger pdf (Page 3)

WirelessPointtoPoint-DIGITAL–QuickStartGuide–v2.1–June2013 3

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 www.qtech.co.nz Tel:033663713



WP2P Repeater Module

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AWP2PRepeaterModuleisavailabletoincreasetherangeandcoverageofaWP2P

system.ItisusedinsituationswheretheWP2Pmodulesarealongwayapartorthereisan

obstaclepreventingline-of-sightbetweenthem.



TheWP2PRepeaterModuleoperatesbylisteningforcompleteandvalidWP2Pmessages

andthenre-transmittingthem.ItcanbeusedwithbothWP2PDIGITALandWP2PDIGITAL

&ANALOGUEtypemodulessimultaneously.



PleaserefertotheRepeaterQuickStartGuideforfurtherdetails.

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Power Supply Notes

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PowerSupply&CurrentConsumption

TheWP2Poperatesfromanominal12VoltDCpowersupply.

Currentconsumptionis~32mAinstandby(nooutputrelaysactive)to49/66/83mA(one,two

orthreerelaysactive).

Thepowerconnectorisa2.1mmDCSocket,centrepinpositive.Thesupplyvoltageshould

beclean,continuousandtransientfreewithanoutputof12Volts+/-1.5VoltDC.TheWP2P

incorporatesreverseandovervoltageprotection.

Theabsolutemaximumsupplyvoltageis13.8VDCandanysolar/batterydesignneedsto

takethisintoaccount.



Warning–DoNOTuseSwitchModePowerSupplies(SMPS)withthisproduct.The

DC power supply used for this product MUST have a grounded negative or be a

“linear”transformerbasedplugpack.Thereasonisthattheaerial,programmingport

andexternalconnectionscanprovideexposedearthpointsandtheSMPScanimpose

an AC voltage on the DC ground, which can lead to damage. Suitable cost effective

plugpacksareavailablefromQTechP/NPD5412,PD5413&PD5414.

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InternalFuse

TheWP2Pmodulecircuitisprotectedbya20mmx5mm500mAfastblowfuse.Thisis

locatedontheinternalcircuitboard.Toaccessthefuse,removethetopcoverbyprizingitoff

itsretainingdimples.Onlyreplacethefusewithanidenticaltype,donotusealternatives.

Thisfusewillblowifthepowersupplymaximumvoltageisexceeded.

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OverVoltageProtection

TheWP2Pmoduleisovervoltageprotectedbya13voltZenerDiode‘crowbar’thatwill

conductandblowtheinternalfuseforvoltages>14volts.TheWP2Pwilltolerate13.8volts,

butwillbegintodrawexcessivecurrentandblowthefuseatinputvoltages>14.6V.

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Note–SolarSuppliesanddesignconsiderations

BeforeusinganyWP2Pmoduleinasolarpoweredsystempleasecheckour“Solar

ApplicationNote”onourwebsite.Explicitconsiderationmustbegiventothe

maximumvoltageandvoltageregulationtopreventdamage.

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Qtech-data-systems Wireless Point to Point (WP2P) - Digital I__O Manuel d'utilisateur Page 3

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