• GENERAL INFORMATION
LV49MD series is an electronic control for medium/high dish washing machine equipped,.
The electronic control is composed of a power board and a display board.
The power board is composed of the main low power supply, the micro-controller, The power components like triacs and relays to control the different actuators and some inputs to keep under control the behaviour of the machine ( NTC for the water temperature, pressure-switch for the water level … ).
The power board supplies and manages the user interface board.
The power board is composed of a mother board and a daughter board called "6S board". The "6S board" is the standard part of the power board with the micro-controller and components for I/O controls. It is a very compact board using only SMD components soldered by reflow.
General characters:
- Compact dimensions,
- Composed of Power board and display board
- Protected by a plastic housing,
- Complete parallel wiring ( Rast 5 and Rast 2.5 connections )
- Using flash micro-controller with Eeprom
- SMPS power supply
- PCB is CEM-1 with 35um thickness cope, CTI>250V 1.1/ Product Description
1.1.1/ User interface
- Program selection by light-tough button
- Start button to enter in execution mode
- Operation indication by LCD
- LCD driven by HT1621
- LEDs indication
- Delay function
- Dimensions:197x76 mm
- 5 push buttons for functions selection
- Plastic housing
1.1.2/ Power board
- Water inlet is through one valve controlled by triac
- Water level management by pressure-switch sensor
- Water overflow level detection
- Heating Element driven by Relay
- Drain pump controlled by triac
- Input for water temperature control ( NTC )
- One valve for regeneration controlled by triac
- One actuator for dispenser controlled by triac
- One pump for washing controlled by triac
- Dimensions : 184x76 mm
- Integrated in a plastic housing
- Comply with IEC 60335 and IEC 60730 requirements 1.2/ Electronic Description :
- Switch mode power supply. High input voltage range : 160 – 264 Vac. Special requirements for higher range can be studied.
- Micro-controller : 16K / Flash technology on the "6S board".
- Flash programming capability on the final product.
- Use of Through Holes Technology components for the mother board and SMD components for the "6S board" ( the daughter board ).
- PCB material : Mother board in CEM1, "6S board" in FR4
- Integrated E2P for safeguard and variants programming ( 256 bytes )
- Wash pump driven by 4A triac
- Embedded safety system according IEC 335 regulation
- Water temperature controlled by NTC sensor
- Drain Pump & valves controlled by 0.8A triacs
- Heater controlled by a 10A relay
- Water level/OVF/DoorCheck supervised by high voltages inputs
- User interface board supplied and controlled by the power board with a 8 ways cable
- A buzzer is available on the board
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