Eaton DB3B Technical Manual

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Contents

3Sounder - dB3B TM264 June 2019 www.eaton.comSounder - DB3BEnglishEx d & Ex de – DC input, 3 stage withoutmonitoring wiring details (Types 5 & 6)This type can be configured in a number of different waysdepending on requirements. Independent tone selectionfor all 3 stages is via the 3 off 5-way DIP switches fittedto the electronics assembly:• 2-wire sysoem (Single soage)e: Connect the positiveand negative supply wires to the terminals as detailedin the wiring diagram.• 2-wire sysoem (Dual soage, reverse pNlarioy)e: Connectthe positive and negative supply wires to the terminalsas detailed in the wiring diagram. The second stageis produced by reversing the polarity of the supply tothe unit.• 3-wire sysoem (Dual soage, cNmmNn +ve)e: Connect 3supply wires to the terminals as detailed in the wiringdiagram (1 common +ve wire and 2 -ve wires). Stage 1is produced when power is applied across the common+ve and stage 1 -ve terminals. Stage 2 is producedwhen power is applied across the common +ve andstage 2 -ve terminals.• 3-wire sysoem (Dual soage, cNmmNn -ve)e: Connect3 supply wires to the terminals as detailed in the wiringdiagram (2 +ve wires and 1 common -ve wire). Stage1 is produced when power is applied across the stage1 +ve and common -ve terminals. Stage 2 is producedwhen power is applied across the stage 2 +ve andstage common -ve terminals.• 4-wire sysoem (Triple soage, CNmmNn -ve)e: Connect4 supply wires to the terminals as detailed in the wiringdiagram (3 +ve wires and 1 common -ve wire). Stage1 is produced when power is applied across the stage1 +ve and common -ve terminals. Stage 2 is producedwhen power is applied across the stage 2 +ve andcommon -ve terminals. Stage 3 is produced whenpower is applied across the stage 3 +ve and common-ve terminals.All versions are supplied with terminals to allow loop-inloop-out connection of the supply wires.Noee:N If an EOL resistor is specified on a DC unit, it willbe fitted as standard across terminals 5 & 6 in theEx d chamber (see below). Re-position EOL asrequired for other configurations.When positioning the EOL, ensure there is a minimum of14mm free space between the resistor body and terminalblock and ensure the resistor is not in contact with thePCB or housing.Ex d & Ex de – DC Input, 3 stage without monitoring wiring details (Types 5 & 6)R1R1R1R1R1DB3B DC DUAL STAGEREVERSE POLARITY CONFIGURATIONDB3B DC SINGLE STAGECONFIGURATIONDB3B DC DUAL STAGECOMMON POSITIVECONFIGURATIONDB3B DC DUAL STAGECOMMON NEGATIVECONFIGURATIONDB3B DC TRIPLE STAGECOMMON NEGATIVECONFIGURATIONEx d12345678Ex de12341234Ex d12345678Ex de12341234Ex d12345678Ex de12341234Ex d12345678Ex de12341234Ex d12345678Ex de12341234STAGE 1 +VE INCOMMON -VE INNOT USEDSTAGE 2 +VE INSTAGE 1+VE OUTCOMMON -VE OUTNOT USEDSTAGE 2 +VE OUTSTAGE 2 +VE INSTAGE 3 +VE INSTAGE 1 +VE INCOMMON -VE INSTAGE 2 +VE OUTSTAGE 3 +VE OUTSTAGE 1 +VE OUTCOMMON -VE OUTCOMMON +VE INSTAGE 1 -VE INNOT USEDSTAGE 2 -VE INCOMMON +VE OUTSTAGE 1 -VE OUTNOT USEDSTAGE 2 -VE OUTSTAGE 1 +VE IN/STAGE 2 -VE INSTAGE 1 -VE IN/STAGE 2 +VE INNOT USEDNOT USEDSTAGE 1 +VE OUT/STAGE 2 -VE OUTSTAGE 1 -VE OUT/STAGE 2 +VE OUTNOT USEDNOT USEDSTAGE 1 +VE INSTAGE 1 -VE INNOT USEDNOT USEDSTAGE 1 +VE OUTSTAGE 1 -VE OUTNOT USEDNOT USED