Table of Contents
How does a Limitorque actuator work?
Electro-Mechanical Style Actuators and Basic Controls. – It drives the motor open or close based on control power. – It turns the motor off when control power is interrupted by LS/TS, Motor Thermal. -It is electrically and mechanically interlocked so the motor can not be powered in both directions at the same time .
What is a Limitorque actuator?
® Since 1929, Limitorque actuators have been making flow control easier among a broad range of applications. These actuators are world-class devices used to consistently drive multi-turn and quarter-turn industrial valves and dampers, providing years of dependable service.
How does a torque switch work?
A torque switch senses the amount of torque being delivered to the controlled device. When the output torque exceeds a specified amount, the motor power is interrupted. For example, sometimes welding slag can be dislodged during flow.
Who makes Limitorque actuators?
Limitorque actuators are a well-known name in the world of flow control. For more than 85 years they have been transforming actuation with their “torque-limiting” design. Today, they offer heavy-duty electric and pneumatic actuators as well as gearboxes and controls.
What is MOV in instrumentation?
Motor Operated Valve (MOV) is one of the most important items in process and piping system. These valves are generally of large size and are used in different conditions.
What is the purpose of limit switch?
In electrical engineering, a limit switch is a switch operated by the motion of a machine part or the presence of an object. A limit switch can be used for controlling machinery as part of a control system, as a safety interlock, or as a counter enumerating objects passing a point.
Which motor is used in MOV?
electric motors
Motor operated valves (commonly abbreviated as MOV on P&IDs) are valves which are actuated by electric motors. Motor operated valves are generally large valves used in different kinds of operations. Due to the large size of the valve actuator, an electric motor is needed to open or close a valve.
What is XV in instrumentation?
An XV valve is an in/off valve mainly used to provide tight closing conditions (TSO). They can be operated by solenoids (if used in ESD locks) or manually. To do this, a control valve is necessary for discharge of the pump to the bottom of the vessel.