Digital guide
You are here:
AEG SIM-203
Product Name: Simulation / Signal Interface Module
Model Series: SIM Series — Signal & Interface Controller
Applicable Products: AEG Ovens, Cooktops, Built-in Kitchen Appliances
Product Description:
The AEG SIM-203 is a signal interface and simulation module used in AEG built-in ovens and cooktops. It acts as an intermediary between the user control panel (touch/knob inputs) and the main electronic control board, translating user commands into digital signals and providing feedback signals for display indicators, buzzer, and status LEDs.
Detailed content
Technical Specifications:
- Part Number: SIM-203
- Interface Type: Digital I/O module with analog input capability
- Input Voltage: 5V DC (logic level) + 12V DC (display/indicator)
- Communication Protocol: SPI / I²C / proprietary serial bus
- Number of I/O Channels: 8–16 digital inputs, 4–8 digital outputs
- Analog Inputs: 2–4 channels (for NTC temperature sensors, 0–5V range)
- Operating Temperature: -10°C to +70°C
- PCB Type: Double-sided FR-4, conformal coated
- Connector: Multi-pin (typically 24–32 pins)
Functional Features:
- Scans membrane keypad or touch sensor inputs and sends encoded signals to main board
- Drives LED indicators and 7-segment display segments
- Reads NTC thermistor values for cavity temperature monitoring
- Controls buzzer/beeper for end-of-cycle and error alerts
- Door interlock monitoring — confirms door is locked before enabling heating
Materials:
- PCB: FR-4 glass epoxy, UL94 V-0 rated
- Enclosure: Flame-retardant ABS
- Connectors: JST / Molex locking type
Installation Requirements:
- Mount in control cavity behind front panel
- All ribbon cables must be fully inserted — partial insertion causes intermittent faults
- Ground connection required — chassis earth via mounting screw
