DRAABEControls
ADivisionofWalterMeier
HumSpotWiringandSymbols
PowerConnection
1:V+ SuppliedfromHumPower
2:FogOn Sends24VDCtoHumPower
3:GND SuppliedfromHumPower
ManualOverideConnection
4:Ext‐ GND
5:Ext+ 24VDC
AnalogueConnection
6:HPSReady ParallelwithRFIorHumSpot
7:V+ ParallelwithRFIorHumSpot
8:PLC24 ParallelwithRFIorHumSpot
9:HPRequest ParallelwithRFIorHumSpot
Digital/BusConnection
10:ABusIn FromHumCenterorHumSpot
11:BBusIn FromHumCenterorHumSpot
12:GND FromHumCenterorHumSpot
13:ABusOut ToHumSpotorResistor
14:BBusOut ToHumSpotorResistor
15:GND ToHumSpotorNothing
Symbol Function Description
Humidificationrequest Theprecisionhygrostatisrequestinghumidification.
AFWSrequest TheAFWSisrequestinghumidification
Atomisersactive Theatomisersareswitchedon.
Busactive ThereisaconnectiontoHumCenter.
Manualoperation Manualoperationon.Thisoverridesthehygrostat.
6‐8 Meanvalue Showsmeanvalueacross15,60and180min
DRAABEdivisionof
WalterMeier(ClimateCanada)Ltd.
2740FentonRd
Ottawa,ONK1T3T7
Canada
DRAABEdivisionof
WalterMeier(ClimateUSA)Inc.
826ProctorAve
Ottawa,ONK1T3T7
Canada
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