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Logic_Fan

By Jane Cruz,2014-06-01 01:46
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Logic_Fan

Logic diagram

    Shaijao C 3x660MW FGD Project ID Booster Fan - TAG No.: 10HTC10 / 20HTC10 / 30HTC10 Variax ANN-5150/2500B PI-diagram - Howden Drawing No.: 0-123332-9 Howden Order No.: S7473 Functional descript. Trip-schedule Howden Draw. No.:

    P> 500 PaAlarm&

    Stall alarmCP001

    1AS001Reduce blade angle

    ODTTimerAN001Trip

    120 s.

    CP101,CP102,DCS&AlarmStall warningCP103,CT104

    Pt 100

    CT101,CT102t&Alarmo Bearing temperature> 85 Cor CT103

    t&AN001Interlock Starto < 85 C

    Torq.t> 100

    &o C

    > 50 Nm

    Torque switchCW001&Alarm

     &AS001Trip

17.08.2004 Order no.: S7473 Rev.: - Drawn: FHP Check: LFA 57321227.doc Page 1/3

Logic diagram

    Shaijao C 3x660MW FGD Project ID Booster Fan - TAG No.: 10HTC10 / 20HTC10 / 30HTC10 Variax ANN-5150/2500B PI-diagram - Howden Drawing No.: 0-123332-9 Howden Order No.: S7473 Functional descript. Trip-schedule Howden Draw. No.:

    minimumBlade&AN001Interlock startServomotorCG101angle

    &AN001Release stop

    maximumStop regulatingBladeInformation onlyAS001ServomotorCG103&angleupwards

    0< 41Blade&CP001Cancel stall-alarmServomotorCG102angle

    CP101,CP102,Cancel stall warning&CP103from DCS

    AlarmServomotorCU101&Servomotor out ofoperation

    > 31umVibr.

    CY101 orBearing vibration&AlarmCY102

    > 80umVibr. &AN001Trip17.08.2004 Order no.: S7473 Rev.: - Drawn: FHP Check: LFA 57321227.doc Page 2/3

Logic diagram

    Shaijao C 3x660MW FGD Project ID Booster Fan - TAG No.: 10HTC10 / 20HTC10 / 30HTC10 Variax ANN-5150/2500B PI-diagram - Howden Drawing No.: 0-123332-9 Howden Order No.: S7473 Functional descript. Trip-schedule Howden Draw. No.:

    AH001,AH002Cut in&Motor in operationAN001and AH003heating elementsMotor runs

    ODTTimerAS001Release servomotor

    15 sec.

    AH001,AH002Cut outMotor out of operationAN001&and AH003heating elements

    Motor runsODT10FHTW21-TimerAN002 orStop sealing air fan&10FHTW22-30 min.AN002P< - 250 Pa

    Pressure induct.

    &AN001Interlock startInlet damper closedOpen damper at fullfan speed

    Outlet damper open&AN001Interlock startDamper open

    Close inlet damperat blade angle inmin. positionDamper before boosterStop conditionAN001&closed

17.08.2004 Order no.: S7473 Rev.: - Drawn: FHP Check: LFA 57321227.doc Page 3/3

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