Siemens Burner Servomotor SQM10.16562/16502

Product Details

The Siemens SQM10 series is an electromotoric actuator designed for the precise control of gas and air dampers on medium to large burners. Unlike the compact SQN series, the SQM10 features a robust die-cast aluminum housing and high-torque gears, making it suitable for heavy-duty industrial environments. 1. SQM10 Model Variants The model number specifies the running time, torque, and the internal circuit configuration. The SQM10 is a clockwise (CW) rotating unit. Model Running Time (90∘) Starting Torque Holding Torque SQM10.15502 $14\text{ seconds}$ $10\text{ Nm}$ $4\text{ Nm}$ SQM10.16502 $29\text{ seconds}$ $10\text{ Nm}$ $4\text{ Nm}$ SQM10.15562 $14\text{ seconds}$ $10\text{ Nm}$ $4\text{ Nm}$ SQM10.16562 $29\text{ seconds}$ $10\text{ Nm}$ $4\text{ Nm}$ Note: Suffixes like .15562 usually include a built-in potentiometer for position feedback ($1000\ \Omega$). 2. Technical Specifications Parameter Specification Operating Voltage $220\dots 240\text{V AC}$ (A2) or $100\dots 110\text{V AC}$ (A1) Frequency $50\dots 60\text{ Hz}$ Power Consumption $8\dots 9\text{ VA}$ Rotation Angle Up to $160^\circ$ (Adjustable via cams) Protection Class IP54 (Dust and splash-proof) Ambient Temp $-20\text{°C}$ to $+60\text{°C}$ Shaft Diameter $10\text{ mm}$ (Standard steel shaft) 3. Internal Components & Adjustments The SQM10 is powered by a reversible synchronous motor and uses a traditional cam-and-switch system for positioning. Cams: The unit contains multiple adjustable cams (Red, Blue, Orange, etc.) that define the travel limits and ignition points. Potentiometer (Optional): Many SQM10 units are fitted with a conductive plastic potentiometer to provide a $4\dots 20\text{ mA}$ or $0\dots 10\text{ V}$ feedback signal to an external controller (like the Siemens RWF55). Manual Release: There is a manual decoupling lever that allows you to rotate the shaft by hand for mechanical alignment during installation. 4. Key Applications The SQM10 is the preferred choice for: Modulating Burners: Where the air damper must constantly adjust to maintain the correct oxygen levels. Large Air Dampers: Where the torque required exceeds the capability of the plastic SQN series. Industrial Kilns and Ovens: Where durability and high IP ratings are required. 5. Selection and Replacement If you are replacing an SQM10, you must check the Suffix: Potentiometer: If your existing unit has a potentiometer (used for feedback), the new one must have the exact same resistance value ($1000\ \Omega$ is standard). Running Time: Ensure the $14\text{s}$ vs $29\text{s}$ running time matches. A mismatched running time can destabilize the burner's PID control loop. Shaft Orientation: While the SQM10 is CW, ensure your mechanical linkage is compatible with the "Home" position.