The **AH3N-R** is a multi-range solid-state analog timer manufactured by ANLY Electronics (and various secondary manufacturers). It is widely used in industrial automation for time-delay control in electrical panels. --- ## 1. Technical Specifications The AH3N-R is characterized by its adjustable time ranges and high-reliability electronic switching. | Feature | Specification | | :--- | :--- | | **Input Voltage** | DC 12V-24V or AC 110V, 220V, 240V (Model dependent) | | **Output Contact** | 5A @ 250VAC (Resistive Load) | | **Operating Mode** | On-Delay (Power ON Trigger) | | **Mounting Type** | Surface mount (PF083A Base) or Flush mount | | **Contact Configuration** | Timed contact (1C or 2C depending on sub-model) | --- ## 2. Core Electronic Components The device functions through a combination of precision timing circuitry and mechanical switching. ### A. Integrated Circuit (IC) Timing Unlike old thermal or pneumatic timers, the AH3N-R uses a specialized **CMOS IC**. This chip counts oscillations to ensure high repetitive accuracy (typically <±1% error). ### B. Potentiometer (Dial) The front-facing knob is connected to a variable resistor (potentiometer). By turning the knob, you change the RC (Resistor-Capacitor) time constant or the reference voltage for the IC, allowing for precise adjustment of the delay duration. ### C. Electromagnetic Relay The "output" part of the timer is a miniature relay. When the internal IC finishes the countdown, it sends a signal to a transistor that energizes the relay coil, closing the electrical contacts. ### D. Multi-Range Selector The "R" in the model name often denotes **Range selection**. There are small DIP switches or hidden adjustment pots that allow the user to switch the time scale (e.g., 1S, 10S, 1M, 10M). --- ## 3. Terminal Connection Diagram The AH3N-R typically uses an 8-pin round socket configuration. | Pin Number | Function | | :--- | :--- | | **2 & 7** | Power Input (Source) | | **1 & 4** | Normally Closed (NC) Contact | | **1 & 3** | Normally Open (NO) Contact | | **8 & 5** | Normally Closed (NC) Contact (2nd Set) | | **8 & 6** | Normally Open (NO) Contact (2nd Set) | --- ## 4. Operational Indicators * **PWR LED (Green):** Indicates that power is supplied to the unit and the timing sequence has started. * **OUT LED (Red):** Indicates that the time delay has elapsed and the output relay is currently energized.