EWM 1000 COMPONENT FUNCTIONALITY TSE-N / A.S. 1
EWM 1000 Electronic control TSE-N / A.S. 2
EWM 1000 Electronic control heating relay motor triac with heat sink microprocessor mains supply programme selector with mains switch motor relays: 2 reversing 1 field tap secondary selector TSE-N / A.S. 3
EWM 1000 Electronic control External asynchronous serial interface mp Internal ROM RAM synchronous EEPROM serial interface Power failure and machine status Machine configuration Firmware, can t be modified on production boards Programme variables, erased when appliance is switched off Cycle description TSE-N / A.S. 4
EWM 1000 Spare Part Circuit Boards Configuration file contains machine identification, hence is different each PNC/ELC A CB configured for another PNC/ELC can t be used for replacement! At the present stage, CBs are not configurable in field service CBs ordered for a specific PNC/ELC will be configured prior to delivery by the spares warehouse, or, in a next, by the service centre TSE-N / A.S. 5
Inputs & sensors The electronic control accepts inputs from : user interface (rotary selectors & pushbuttons) door lock pressure switches with 2 or 3 levels NTC sensor tachogenerator DSP reed switch on top-loaded machines TSE-N / A.S. 6
Outputs to actuators The electronic control generates (power) outputs to the following indicators and actuators: user interface (indicator LEDs and buzzer) main motor (speed control, reversing & field tapping) drain pump motor 2 solenoid valves door lock door lock indicator lamp (some models) TSE-N / A.S. 7
Circuit diagram (single field coil) Machines up to 1200 rpm TSE-N / A.S. 8
Circuit diagram (split field) Machines with 1400 rpm TSE-N / A.S. 9
Wiring TSE-N / A.S. 10
Door Lock Bimetal PTC type 1. EWM 1000 circuit board 10. Door lock 11. Interference filter 12. Door lock indicator lamp (optional) ON/OFF Main switch integrated in programme selector Triac powers bimetal PTC, which deformes under heat, and locks door TSE-N / A.S. 11
Door Lock Instantaneous type 1. EWM 1000 circuit board 10. Door lock 11. Interference filter 12. Door lock indicator lamp (optional) ON/OFF Main switch integrated in programme selector Triac sends to solenoid: 1 pulse to lock 2 pulses to unlock TSE-N / A.S. 12
Door Lock Instantaneous type TSE-N / A.S. 13
Door Lock Instantaneous type 2-3 approx. 1.2 kw 2-4 approx. 1.0 kw 3-4 approx. 190 W TSE-N / A.S. 14
Door Lock Instantaneous type TSE-N / A.S. 15
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 channels 10. detergent dispenser 11. vapour outlet 12. detergent drawer 13. siphon 14. detergent fill tube Detergent dispenser (short version) TSE-N / A.S. 16
Detergent dispenser (short version) with 3 compartments: a prewash b main wash d fabric softener with 4 compartments: a prewash b main wash c bleach d fabric softener TSE-N / A.S. 17
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 channels 10. detergent dispenser 11. vapour outlet 12. detergent drawer 13. siphon 14. detergent fill tube Detergent dispenser (long version) TSE-N / A.S. 18
Detergent dispenser (long version) with 3 compartments: a prewash b main wash d fabric softener with 4 compartments: a prewash b main wash c bleach d fabric softener TSE-N / A.S. 19
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 selected simultaneously with PREWASH), the compartment will be used for the stain remover. TSE-N / A.S. 20
Water fill: main wash (on all dispensers) If the main wash solenoid valve is energized, water flows into the main wash compartment TSE-N / A.S. 21
Water fill: fabric conditioner (on all dispensers) If both solenoid valves are energized, the jets deviate each other, and water flows through the middle channel into the fabric conditioner compartment TSE-N / A.S. 22
Water fill: prewash and bleach (on 4-compartment dispensers) Stains The prewash solenoid valve is energized, and water flows both into the prewash, and into the bleach compartment This means that the PREWASH and BLEACH options can t be selected simultaneously! TSE-N / A.S. 23
Pressure switch TSE-N / A.S. 24
Pressure switch 11-14 (NO) Antiboil / foam level 21-24 (NO) 1 st level 31-32 (NC!) Antiflood level NOT ON ALL MODELS!! 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 1 st level 80± 3 55± 3 90± 3 70± 3 Antiflood level 390± 15 240±50 390± 15 240±50 TSE-N / A.S. 25
Water fill control 1. EWM 1000 PCB 2. Pressure switch antiboil/foam level 3. Pressure switch 1 st level 4. Prewash solenoid valve 5. Main wash solenoid valve 6. Heating element AB_S Antiboil level sensing L1_S 1 st level sensing TSE-N / A.S. 26
Water Fill Control in the first fill step, water is filled until antiboil, and then 1 st level contacts close the electronic measures the time Dt elapsed between closure of antiboil and 1 st level contacts, and calculates the flow rate = volume AB to L1 / Dt in the second fill step, an additional quantity defined in the programme tables is filled this fill step is time controlled, based on the flow rate TSE-N / A.S. 27
Antiflood Protection (not on all models) 1. EWM 1000 PCB 8. Drain pump 9. Pressure switch antiflood level HV1_S Antiflood level sensing Drain_TY_S Drain pump triac sensing AF pressure switch is normally closed. If it opens, drain pump is activated until the switch closes again TSE-N / A.S. 28
Drain Control 1. EWM 1000 PCB 2. Pressure switch antiboil level 8. Drain pump AB_S Antiboil level sensing Drain_TY_S Drain pump triac sensing First drain until AB pressure switch opens on empty. Second drain time-controlled. TSE-N / A.S. 29
Heating Control 1. EWM 1000 PCB 2. Pressure switch antiboil level 3. Pressure switch 1 st level 6. Heating element 7. NTC sensor K1 Heating relay on PCB AB_S Antiboil level sensing L1_S 1 st level sensing NTC sensor now integrated in heating element! TSE-N / A.S. 30
NTC characteristic TSE-N / A.S. 31
Brush Motor TSE-N / A.S. 32
Motors TSE-N / A.S. 33
Motor control 1. EWM 1000 PCB 2. Pressure switch antiboil level 13. Motor M = Rotor S = Stator P = Protection T = Tachogenerator AB_S Antiboil level sensing TSE-N / A.S. 34
Fast Unbalance Control System In this speed is increased by 2 rpm every 300 ms if unbalance below limit, or decreased by 2 rpm if unbalance is above limit. Balance after first attempt 115 rpm 55 rpm 470 rpm pulse 0 1 Normal spin TSE-N / A.S. 35
Fast Unbalance Control System Balance after second attempt 0 1 2 Normal spin TSE-N / A.S. 36
Fast Unbalance Control System Balance after third, normal spin 0 1 2 3 1 2 3 Normal spin TSE-N / A.S. 37
Fast Unbalance Control System Some unbalance after third, reduced spin 0 1 2 3 1 2 3 Red. spin TSE-N / A.S. 38
Fast Unbalance Control System Unbalance after third, no spin 0 1 2 3 1 2 3 No spin TSE-N / A.S. 39
Foam control Spin with some foam Spin without foam Spin with some foam AB level on full, spin discontinued with drain pump operating, until AB returns to empty. Spin skipped after 5 attempts. TSE-N / A.S. 40