The **M2UDS-22-R2/CE** is a specialized industrial component, primarily identified as an **Electronic Timer / Time Delay Relay** manufactured by companies like **Autonics** (or similar industrial automation brands using this nomenclature). --- ## 1. Technical Specifications The part number breaks down into specific electronic characteristics required for industrial control circuits. | Feature | Description | | :--- | :--- | | **Model Type** | Analog Timer (Dial Setting) | | **Mounting** | DIN Rail or Surface Mount (8-pin plug-in) | | **Output Contact** | SPDT (Single Pole Double Throw) x 2 or Instantaneous + Time Limit | | **Voltage Range** | 100–240VAC 50/60Hz / 24–240VDC (Universal) | | **Time Range** | Multi-range (0.1 sec to 30 hours typically) | | **Approval** | CE Marked (Compliant with EU safety standards) | --- ## 2. Key Electronic Components Inside the housing, the unit consists of several critical electronic stages: ### A. Power Supply Stage * **Switching Mode or Transformerless Supply:** Converts high-voltage AC/DC input into low-voltage DC (typically 5V or 12V) to power the internal logic. * **Varistors (MOV):** Integrated for surge protection against industrial electrical noise. ### B. Timing Logic * **Integrated Circuit (IC):** Uses a dedicated timing CMOS IC or a small microcontroller to handle the clock pulses. * **Potentiometer:** A high-precision variable resistor located behind the front dial that adjusts the RC (Resistor-Capacitor) time constant or digital count. ### C. Output Stage * **Electromechanical Relay:** The "clicking" component. It provides physical isolation between the control logic and the high-power load. * **LED Indicators:** * **PWR:** Indicates power is supplied. * **OUT:** Indicates the relay is energized (timing complete or instantaneous). --- ## 3. Terminal Configuration (8-Pin) Most "R2" models follow the standard 8-pin circular configuration: | Pin Number | Function | | :--- | :--- | | **2 & 7** | Power Input (Source) | | **1 & 4** | Contact 1 (Normally Closed) | | **1 & 3** | Contact 1 (Normally Open) | | **8 & 5** | Contact 2 (Normally Closed) | | **8 & 6** | Contact 2 (Normally Open) | --- ## 4. Operational Modes The **"U"** in the prefix often denotes **Universal** or **Multi-function**, allowing for various electronic behaviors: 1. **ON-Delay:** Relay turns on after a set duration once power is applied. 2. **Interval:** Relay turns on immediately for a set duration, then turns off. 3. **Flicker:** Relay cycles ON and OFF repeatedly based on the set time. ---