Controllers & Timers
Controllers are specialized electronic devices used to regulate, maintain, or sequence processes and amounts in industrial automation and electrical control systems. Timers, on the other hand, are units that provide time-based switching or sequencing functions. Both serve critical roles across nearly all sectors of manufacturing, machinery automation, building management systems, institutional facilities control, and countless other applications where precise monitoring and repeatability are important.
Industrial controllers process input data, evaluate logic or conditions, and output commands to motors, valves, relays, or other actuators. They help maintain desired levels (speed, flow, pressure, temperature, etc.), initiate start/stop sequences, coordinate safety shutoffs, switch power, and more. They act as the brains of industrial equipment and housekeeping systems, letting operators automate complex or repetitive tasks reliably.
Timers are used to delay the activation or deactivation of electrical loads, repeat a process for a fixed interval, cycle a duty sequence, or provide backup in conditions where sequencing is critical. Common timer applications include motor protection (preventing short-cycling), lighting control (on/off overnight), pump alternating, process batching, and HVAC equipment. Industrial timers are ruggedly constructed for harsh environments and available with on-delay, off-delay, one-shot, cyclic, multi-function, and repeat cycle programming.
Dwyer Controllers & Timers
Eaton Controllers & Timers
Omega Controllers & Timers
Tek-Trol Controllers & Timers
FAQs
What are controllers and timers used for?
Controllers and timers are used to automate and manage electrical, industrial, and process operations by controlling when equipment turns on, off, or changes state. Controllers process input signals from sensors or switches and execute logic-based decisions, while timers introduce precise time delays or sequencing for functions such as motor control, lighting, heating, and safety interlocks.
What is the difference between a controller and a timer?
A controller is a device that monitors inputs and makes decisions based on programmed logic or set parameters, often adjusting outputs continuously. A timer is a type of control device that triggers actions after a preset time delay or for a defined duration. Timers are commonly used as standalone devices or integrated into controllers for sequencing and delay functions.
What types of controllers and timers are commonly used in industrial applications?
Common controllers include process controllers, temperature controllers, and programmable logic controllers (PLCs), while common timers include on-delay, off-delay, interval, repeat-cycle, and multifunction timers. These devices are used together to automate machines, coordinate processes, and ensure consistent, repeatable operation across industrial systems.
What industries rely on controllers and timers?
Controllers and timers are widely used in manufacturing, industrial automation, HVAC, water and wastewater treatment, food and beverage processing, energy production, and building systems. These industries depend on precise control and timing to improve efficiency, maintain product quality, and ensure safe operation of equipment and processes.
Do controllers and timers require programming or maintenance?
Yes, many controllers and timers require configuration or programming to match application requirements, while simpler models use manual settings or dials. Periodic inspection, verification, and recalibration help maintain reliable operation over time. Proper setup and routine maintenance ensure accurate timing, dependable control, and long-term performance.