The **JDL-A35-R** is a specific model of an **Electric Linear Actuator**, commonly used in furniture automation (such as power recliners, lift chairs, and hospital beds). It serves as the "muscle" that converts electrical energy into linear motion. --- ### 1. Key Technical Specifications Based on the standard configuration for this series, here are the electronic and mechanical characteristics: | Feature | Specification | | :--- | :--- | | **Input Voltage** | 24V DC (Standard for furniture electronics) | | **Current Rating** | Typically 2.0A - 5.0A (depending on load) | | **Load Capacity** | Usually rated between 750N to 1500N (Push/Pull) | | **Stroke Length** | Varies by sub-model (standard is ~333mm) | | **Duty Cycle** | 10% (e.g., 2 min on, 18 min off) | | **Protection Class** | IP20 or IP54 (Indoor use) | --- ### 2. Main Electronic Components The JDL-A35-R consists of several internal parts that work together to manage movement and safety: #### A. DC Permanent Magnet Motor This is the core component. When 24V DC is applied, the motor rotates. Reversing the polarity (switching the positive and negative wires) causes the motor to spin in the opposite direction, which retracts or extends the actuator. #### B. Limit Switches (Internal) To prevent the motor from burning out or damaging the gears, the unit contains two internal micro-switches: * **Fully Extended Switch:** Cuts power automatically when the rod reaches its maximum length. * **Fully Retracted Switch:** Cuts power when the rod is fully drawn back. #### C. Gearbox and Lead Screw While mechanical, these are driven by the motor. The motor turns a worm gear, which rotates a lead screw. A drive nut moves along this screw to create linear motion. #### D. Connection Interface (Plug) Most JDL-A35-R models use a **2-Pin Connector** (often a flat pin and a round pin, known as a "limousin" connector). * This connects directly to a power transformer or a handset controller. --- ### 3. Common Wiring Configuration The wiring is designed for simplicity and safety: ```markdown [Power Supply (29V/24V)] <---> [Hand Switch/Remote] <---> [JDL-A35-R Actuator] ``` * **Positive (+) on Pin 1, Negative (-) on Pin 2:** Actuator Extends. * **Negative (-) on Pin 1, Positive (+) on Pin 2:** Actuator Retracts. --- ### 4. Troubleshooting Electronic Issues If the part is not functioning, check these three areas: 1. **The Transformer:** Ensure the power brick has a green LED light indicating it is outputting 24V-29V DC. 2. **The Handset:** The switch buttons are the most common point of failure due to mechanical wear. 3. **The Motor Brushes:** If the motor hums but doesn't move, the internal brushes or the capacitor may be failing. ---