Eaton DB3B Technical Manual

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5Sounder - dB3B TM264 June 2019 www.eaton.comSounder - DB3BEnglishEx d – DC input with voltage free stageactivation wiring details (Type 11)Connect the positive (+ve) and negative (-ve) supplywires to the terminals as detailed in the wiring diagram.When power is applied to the unit, no tone will beproduced initially. Connect wires and remote switches toterminals R0 to R5 as shown. When the switch connectedto R1 is closed, the stage 1 tone will be produced asselected by the 5-way DIP switch on the electronicsassembly. When any of the other switches connectedto R2 to R5 is closed, the preselected tone for stages2 to 5 are produced. See tone table 2 for details ofpre-selected tones.Noee:N Closing more than one switch at a time will resultin no tone being produced.If a resistor (R1) is fitted, monitoring functionality isobtained when the supply polarity is reversed.R1 - OPTIONAL EOL RESISTOR R1+VE IN+VE OUT-VE IN-VE OUTSTAGE 1STAGE 2STAGE 3STAGE 4STAGE 5COMMONT1T2T3T4R1R2R3R4R5R0CUSTOMERWIRINGDB3B Ex d CHAMBEREx de – DC input with voltage free stageactivation wiring details (Type 12)Connect the positive (+ve) and negative (-ve) supplywires to the terminals as detailed in the wiring diagram.When power is applied to the unit, no tone will beproduced initially. Connect wires and remote switches toterminals R0 to R5 as shown. When the switch connectedto R1 is closed, the stage 1 tone will be produced asselected by the 5-way DIP switch on the electronicsassembly. When any of the other switches connectedto R2 to R5 is closed, the pre-selected tone for stages2 to 5 are produced. See tone table 2 for details ofpre-selected tones.Noee:N Closing more than one switch at a time will resultin no tone being produced.If a resistor (R1) is fitted, monitoring functionality isobtained when the supply polarity is reversed.R1 - OPTIONAL EOL RESISTORLOCATED IN Ex d CHAMBERR1DB3B Ex e CHAMBERCUSTOMERWIRING12341234+VE IN/OUT-VE IN/OUTSTAGE 1 (R1)STAGE 2 (R2)STAGE 3 (R3)STAGE 4 (R4)STAGE 5 (R5)COMMON (R0)4.0 OperationThe sounder is available in various AC input voltageversions and a single DC input voltage version.For AC versions, the nominal operating voltage is statedon the unit label and the supply voltage tolerance is ±10%.For DC versions, the absolute input voltage range is11.0Vdc to 57.6Vdc.If using an EOL resistor with a value between 700Ω and2KΩ the maximum voltage should be limited to 28.8Vdc,if using an EOL resistor with a value between 470Ω and700Ω the maximum voltage should be limited to 26Vdc.The unit is fitted with a volume control which is positionedon the top face of the electronics assembly PCB.Maximum volume is obtained when this control is turnedfully clockwise. When turned fully anti-clockwise the unitwill emit no sound.Warning: Do not attempt to turn the volume control past itslimits of movement as this may cause damage to the unit.StagesFor all versions, a 5-way DIP switch selects the stagerequired for each stage. The settings for the standardstages are shown in the table below: