The Limitorque 61-825-1282-2 is a high-performance control unit specifically engineered for industrial valve actuators. As a critical interface between the control system and the physical valve, this unit translates electrical commands into precise mechanical movement. Built to withstand the harsh conditions of heavy industrial environments, the 61-825-1282-2 ensures that actuators operate with the high torque and reliability required for critical infrastructure safety and process efficiency.
Technical Specifications (Product Datasheet) Model Number: 61-825-1282-2 Device Type: Actuator Control Board / Control Unit Compatibility: Limitorque L120, SMB, and MX Series Actuators Input Voltage: 110V/220V AC Control Power Control Logic: Integrated Torque and Limit Switch Interface Contact Rating: Heavy-duty industrial relay contacts Enclosure Compatibility: NEMA 4, 4X, and 7 (Explosion proof housing compatible) Operating Temperature: -40°C to +85°C Vibration Resistance: Industrial Grade / High-Impact Length: 225 mm Width: 160 mm Height: 45 mm Weight: 1.25 kg Country of Origin: USA
Applications The 61-825-1282-2 control unit is primarily used in power plants, oil and gas refineries, water treatment facilities, and chemical processing plants. It is essential for managing “Open/Close” or “Modulating” valve operations. Common applications include the control of gate valves, globe valves, and dampers where precise positioning and over-torque protection are necessary to prevent mechanical damage to the valve stem or seat.
Operating Instructions Installation must be performed by a certified technician following the specific Limitorque wiring schematic for your actuator model. Before installation, ensure all electrical power to the actuator is locked out. Mount the board securely within the actuator’s electrical compartment, ensuring all spacers and insulating washers are in place. Connect the field wiring to the terminal strips, paying close attention to the limit switch and torque switch feedback loops. Once installed, perform a “dry run” to calibrate the open and close limits. Ensure the torque bypass settings are correctly adjusted to protect the valve assembly from excessive force during the seating process.
Q&A – Frequently Asked Questions Question: Can the 61-825-1282-2 be used for both single-phase and three-phase actuators? Answer: This specific control unit manages the control logic circuitry; while the control voltage is typically single-phase, it is used to trigger the contactors or starters for three-phase motors.
Question: What should I do if the actuator stops mid-travel and the “Torque” light is on? Answer: This indicates the control unit has detected resistance exceeding the preset limit. Inspect the valve for obstructions or mechanical binding before resetting the control unit.
Question: Is this board compatible with digital fieldbus protocols like Profibus or Foundation Fieldbus? Answer: The 61-825-1282-2 is primarily a hard-wired analog/digital control board. For fieldbus integration, an additional network interface module or a different series of Limitorque digital controllers may be required.
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