Johnson Controls HICM008B21S User Manual

5-14
SM-18003
EXTERNAL INPUT/OUTPUT AND FUNCTION SETTING
5.4.1.6 PickingUpOperationSignal
Upto3ofthefollowing7signalscanbepickedupbysettingthisfunctiontoCN7andCN8accordingto
thefollowinggures.Makesuretouseaeld-suppliedremotecontroladopterPSC-5RAforpickingup
signals.Thewiringlengthshallbe230ft.(70m)orless.Thesettingsforpickingupsignals(1),(2)and(4)
arealreadysetatthefactory.
(1)PickingUpOperationSignal[OutputSetting:Code(01)]
 Thisfunctionisutilizedtopickupanoperationsignalthathasnothingtodowiththecompressor
stoppagebyathermistor.Anexampleofbasicwiringisshownbelow.Thecontactoftheauxiliary
relay“RYa”isclosedwhenthisoperationsignalisgiven.Thisfunctionenablesthesignalcheckduring
remotecontroloperationandaninterlockofthefanforairinlet,etc.Thecontactoftheauxiliaryrelay
“RYa”isopenedwhiletheprotectiondevicesareactivated.
Picking Up Operation Signal
(Example: Operation Output is set to terminals 1 and 2 of CN7.)
RY
CN7 Connector
CN7
12
3 P Connector
Indoor Unit PCB
Auxiliary Relay
RYa
(2) PickingUpAlarmSignal[OutputSetting:Code(02)]
 Thissignalisutilizedtopickupanalarmsignalwhilesafetydevicesareactivated.However,this
functionisnotavailableduringabnormalcommunicationofthewiredcontroller.Anexampleofbasic
wiringisshownbelow.Thecontactoftheauxiliaryrelay“RYa”isclosedwhiletheprotectiondevices
are activated.
CN7 Connector
Indoor Unit PCB
Auxiliary Relay
CN7
RYa
13
3 P Connector
RY
Picking Up Alarm Signal
(Example: Alarm Output is set to terminals 1 and 3 of CN7.)

Johnson Controls HICM008B21S Specifications

General

Brand	Johnson Controls
Model	HICM008B21S
Category	Air Conditioner
Language	English