3 EWM1000 components - · PDF fileTSE-N / A.S. 5 February 2002 EWM 1000 Spare Part Circuit Boards Ø Configuration file contains machine ident-ification, hence is different each PNC/ELC

1TSE-N / A.S. February 2002

EWM 1000

COMPONENTFUNCTIONALITY


EWM 1000Electronic control



programme selectorwith mains switch

heating relay

mains supply

motor triacwith heat sink

motor relays:2 reversing1 field tap

microprocessor

secondaryselector



ROM RAM EEPROMExternal

asynchronousserial interface

µP

Internal synchronous serial interface

Power failureand machine

status

Machineconfiguration

CycledescriptionFirmware,

can’t bemodified onproduction

boards

Programmevariables,

erasedwhen

appliance isswitched off


EWM 1000Spare Part Circuit Boards

Ø Configuration file contains machine ident- ification, hence is different each PNC/ELC

Ø A CB configured for another PNC/ELC can’t be used for replacement !

Ø At the present stage, CBs are not config- urable in field service

Ø CBs ordered for a specific PNC/ELC will be configured prior to delivery by the spares warehouse, or, in a next phase, by the service centre


Inputs & sensors

The electronic control accepts inputs from :

Ø user interface (rotary selectors & pushbuttons)

Ø door lock

Ø pressure switches with 2 or 3 levels

Ø NTC sensor

Ø tachogenerator

ØDSP reed switch on top-loaded machines


Outputs to actuators

The electronic control generates (power)outputs to the following indicators andactuators:

Ø user interface (indicator LEDs and buzzer)

Ø main motor (speed control, reversing & field tapping)

Ø drain pump motor

Ø 2 solenoid valves

Ø door lock

Ø door lock indicator lamp (some models)


Circuit diagram (single field coil)Machines up to 1200 rpm


Circuit diagram (split field)Machines with 1400 rpm


Wiring


Door Lock Bimetal PTC type

1. EWM 1000 circuit board10. Door lock11. Interference filter12. Door lock indicator lamp (optional)ON/OFF Main switchintegrated in programmeselector

Triac powers bimetalPTC, which deformesunder heat, and locksdoor


Door Lock Instantaneous type

1. EWM 1000 circuit board10. Door lock11. Interference filter12. Door lock indicator lamp (optional)ON/OFF Main switchintegrated in programmeselector

Triac sends to solenoid:1 pulse to lock2 pulses to unlock





2-3 approx. 1.2 kΩ2-4 approx. 1.0 kΩ3-4 approx. 190 Ω




Detergent dispenser(short version)

1. water fill hose 2. gasket 3. strain relief for supply cable 4. valve support 5. 2-way inlet valve (cold water) 7. tubes 8. inlet piece 9. cover with water channels10. detergent dispenser11. vapour outlet12. detergent drawer13. siphon14. detergent fill tube


Detergent dispenser(short version)

with 3 compartments:a prewashb main wash

d fabric softener

with 4 compartments:a prewashb main washc bleachd fabric softener


Detergent dispenser(long version)

1. water fill hose 2. gasket 3. strain relief for supply cable 4. valve support 5. 2-way inlet valve (cold water) 7. tubes 8. inlet piece 9. cover with water channels10. detergent dispenser11. vapour outlet12. detergent drawer13. siphon14. detergent fill tube


Detergent dispenser(long version)

with 3 compartments:a prewashb main wash

d fabric softener

with 4 compartments:a prewashb main washc bleachd fabric softener


Water fill: prewash(on 3-compartment dispensers)

If the prewash solenoid valve is energized,water flows into the prewash compartment.

With the STAINS option (can’t be selectedsimultaneously with PREWASH), the com-

partment will be used for the stain remover.


Water fill: main wash(on all dispensers)

If the main wash solenoid valve is energized,water flows into the main wash compartment


Water fill: fabric conditioner(on all dispensers)

If both solenoid valves are energized,the jets deviate each other, and

water flows through the middle channelinto the fabric conditioner compartment


Water fill: prewash and bleach(on 4-compartment dispensers)

The prewash solenoid valve is energized, andwater flows both into the prewash, and into

the bleach compartment

This means that the PREWASH and BLEACHoptions can’t be selected simultaneously !

Stains


Pressure switch


Pressure switch

11 - 14 (NO)Antiboil / foam level

21 - 24 (NO)“1st” level

31 - 32 (NC !)Antiflood levelNOT ON ALLMODELS !!

Drum G20 (46 l)Eco-ball

Drum G19 (42 l)Traditional/ Eco-ball

Full (mm) Refill (mm) Full (mm) Refill (mm)Antiboil level 55± 3 35± 3 55± 3 35± 3“1st” level 80± 3 55± 3 90± 3 70± 3Antiflood level 390± 15 240±50 390± 15 240±50


Water fill control

1. EWM 1000 PCB2. Pressure switch antiboil/foam level3. Pressure switch “1st“ level4. Prewash solenoid valve5. Main wash solenoid valve6. Heating elementAB_S Antiboil level sensingL1_S “1st“ level sensing


Water Fill Control

Øin the first fill step, water is filled until antiboil, and then “1st“ level contacts close

Øthe electronic measures the time ∆t elapsed between closure of antiboil and “1st“ level contacts, and calculates the flow rate = volume AB to L1 / ∆t

Øin the second fill step, an additional quant- ity defined in the programme tables is filled

Øthis fill step is time controlled, based on the flow rate


Antiflood Protection(not on all models)

1. EWM 1000 PCB8. Drain pump9. Pressure switch antiflood levelHV1_S Antiflood level sensingDrain_TY_S Drain pump triac sensing

AF pressure switch isnormally closed.If it opens, drain pumpis activated until theswitch closes again


Drain Control

1. EWM 1000 PCB2. Pressure switch antiboil level8. Drain pumpAB_S Antiboil level sensingDrain_TY_S Drain pump triac sensing

First drain phase untilAB pressure switchopens on “empty”.Second drain phasetime-controlled.


Heating Control

1. EWM 1000 PCB2. Pressure switch antiboil level3. Pressure switch “1st“ level6. Heating element7. NTC sensorK1 Heating relay on PCBAB_S Antiboil level sensingL1_S “1st“ level sensing

NTC sensor nowintegrated in heatingelement !


NTC characteristic


Brush Motor


Motors


Motor control

1. EWM 1000 PCB2. Pressure switch antiboil level13. Motor

M = RotorS = StatorP = ProtectionT =Tachogenerator

AB_S Antiboil level sensing


FUCSFast Unbalance Control System

Balance after first attempt

FUCSphase 0

FUCSphase 1

Normalspin

470 rpmpulse

55 rpm

115 rpm

In this phasespeed isincreased by2 rpm every300 ms ifunbalancebelow limit,

or decreasedby 2 rpm ifunbalance isabove limit.



Balance after second attempt

FUCSphase 0

FUCSphase 1

Normalspin

FUCSphase 2



Balance after third phase, normal spin

FUCSphase

0

Normalspin

FUCSphase

2

FUCSphase

1

FUCSphase

3

FUCSphase

2

FUCSphase

1

FUCSphase

3



Some unbalance after third phase, reduced spin

FUCSphase

0

Red.spin

FUCSphase

2

FUCSphase

1

FUCSphase

3

FUCSphase

2

FUCSphase

1

FUCSphase

3



Unbalance after third phase, no spin

FUCSphase

0

Nospin

FUCSphase

2

FUCSphase

1

FUCSphase

3

FUCSphase

2

FUCSphase

1

FUCSphase

3


Foam controlSpin with some foam

Spin without foam Spin with some foam

AB level on “full”, spin discontinued with drainpump operating, until AB returns to “empty”.

Spin phase skipped after 5 attempts.

Documents

3 EWM1000 components - · PDF fileTSE-N / A.S. 5 February 2002 EWM 1000 Spare Part Circuit Boards Ø Configuration file contains machine ident-ification, hence is different each PNC/ELC