1TSE-N / A.S. February 2002
EWM 1000
COMPONENTFUNCTIONALITY
2TSE-N / A.S. February 2002
EWM 1000Electronic control
3TSE-N / A.S. February 2002
EWM 1000Electronic control
programme selectorwith mains switch
heating relay
mains supply
motor triacwith heat sink
motor relays:2 reversing1 field tap
microprocessor
secondaryselector
4TSE-N / A.S. February 2002
EWM 1000Electronic control
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
5TSE-N / A.S. February 2002
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
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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
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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)
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Circuit diagram (single field coil)Machines up to 1200 rpm
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Circuit diagram (split field)Machines with 1400 rpm
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Wiring
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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
12TSE-N / A.S. February 2002
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
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Door Lock Instantaneous type
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Door Lock Instantaneous type
2-3 approx. 1.2 kΩ2-4 approx. 1.0 kΩ3-4 approx. 190 Ω
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Door Lock Instantaneous type
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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
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Detergent dispenser(short version)
with 3 compartments:a prewashb main wash
d fabric softener
with 4 compartments:a prewashb main washc bleachd fabric softener
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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
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Detergent dispenser(long version)
with 3 compartments:a prewashb main wash
d fabric softener
with 4 compartments:a prewashb main washc bleachd fabric softener
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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.
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Water fill: main wash(on all dispensers)
If the main wash solenoid valve is energized,water flows into the main wash compartment
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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
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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
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Pressure switch
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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
26TSE-N / A.S. February 2002
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
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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
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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
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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.
30TSE-N / A.S. February 2002
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 !
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NTC characteristic
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Brush Motor
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Motors
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Motor control
1. EWM 1000 PCB2. Pressure switch antiboil level13. Motor
M = RotorS = StatorP = ProtectionT =Tachogenerator
AB_S Antiboil level sensing
35TSE-N / A.S. February 2002
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.
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FUCSFast Unbalance Control System
Balance after second attempt
FUCSphase 0
FUCSphase 1
Normalspin
FUCSphase 2
37TSE-N / A.S. February 2002
FUCSFast Unbalance Control System
Balance after third phase, normal spin
FUCSphase
0
Normalspin
FUCSphase
2
FUCSphase
1
FUCSphase
3
FUCSphase
2
FUCSphase
1
FUCSphase
3
38TSE-N / A.S. February 2002
FUCSFast Unbalance Control System
Some unbalance after third phase, reduced spin
FUCSphase
0
Red.spin
FUCSphase
2
FUCSphase
1
FUCSphase
3
FUCSphase
2
FUCSphase
1
FUCSphase
3
39TSE-N / A.S. February 2002
FUCSFast Unbalance Control System
Unbalance after third phase, no spin
FUCSphase
0
Nospin
FUCSphase
2
FUCSphase
1
FUCSphase
3
FUCSphase
2
FUCSphase
1
FUCSphase
3
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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.