Autonics Temperature Controller: PID Controllers

An Autonics Temperature Controller is a digital process control device developed by Autonics Corporation for precise industrial temperature regulation. These controllers are widely used across manufacturing industries to maintain stable thermal conditions in equipment such as industrial ovens, furnaces, extrusion machines, and process heating systems. Autonics temperature controllers support advanced PID temperature control algorithms, enabling accurate regulation through continuous temperature feedback loops using thermocouple inputs or RTD sensors.

Autonics provides multiple temperature controller series including the TK Series, TCN Series, TX Series, and TC Series controllers, designed for panel-mounted industrial control systems. These devices support relay output, SSR drive output, and analog control output, allowing flexible integration with heating and cooling systems in industrial automation environments. Features such as PID auto tuning, temperature stability control, and precise temperature setpoint management ensure reliable process performance across demanding production environments.

Across India’s plastics processing, food manufacturing, pharmaceutical production, chemical processing, textile machinery, furnace control, and HVAC industries, Autonics temperature controllers are widely used for accurate process temperature monitoring and control. Whether used as standalone digital temperature controllers or integrated with PLC and SCADA systems through RS-485 communication and Modbus RTU protocols, Autonics controllers provide dependable temperature control solutions for industrial automation systems.

Autonics Temperature Controller – TK Series

Sampling Rate: 50 ms, high-speed.
Output Options: Current output and SSR drive output.
SSRP Function: ON/OFF, cycle, phase control.
Power Supply: AC 100-240 VAC, AC/DC 24 VAC, 24-48 VDC.
Display: 7 segment (red, green, yellow), LED.
Control Type: Heating, Cooling, ON/OFF, P, PI, PD, PID.
Protection: IP65 (Front panel), IP50 (TK4SP).

Temperature Controller Autonics – TCN Series

Display: Dual digital (PV/SV), 7 segment (red, green), LED type.
Sampling Rate: 100 ms, high-speed.
Accuracy: ±0.5% display accuracy.
Output Options: Relay output and SSR drive output.
SSRP Function: ON/OFF, cycle, phase control.
Power Supply: 24 VAC, 24-48 VDC, 100-240 VAC.
Power Consumption: AC ≤ 5 VA, DC ≤ 3 W.

Autonics PID – TZN/TZ Series

Control Type: Dual-speed PID for high-speed
Display Accuracy: ±0.3% of full-scale value.
Auto Tuning: 2-step function.
Input Types: Supports 13 types, including temperature sensors and analog inputs.
Alarm Outputs: Loop break alarm, sensor break alarm.
Output Options: PV transmission (DC 4-20mA)

Autonics PID Controller – TC Series

Display: Single digital (switch between PV and SV), 7 segment (red, green, yellow), LED type.
Sampling Rate: 100 ms, high-speed.
Accuracy: ±0.5% display accuracy.
Output Options: Relay output and SSR drive output.
Design: Compact with large display panels, connector plug types for easy wiring.
Power Supply: 24 VAC, 24-48 VDC, 100-240 VAC.

Autonics PID Temperature Controller – TM Series

Channels: 4-channel (TM4) / 2-channel (TM2).
Sampling Cycle: 4-channel: 100ms / 2-channel: 50ms.
Control Function: Simultaneous heating and cooling.
Input Isolation: Dielectric strength: 1000 VAC.
Output Options: Current output and SSR drive output (TM2-2C).
Alarm Function: Heater disconnect (CT input).
Control Output: Relay and SSR options, Current DC 4-20/0-20 mA.

Autonics Temp Controller – TX Series

Sampling Rate: 50 ms, high-speed.
Display Accuracy: ±0.3%.
Display: Large LCD with white PV characters.
Output Options: Current output and SSR drive output.
SSRP Function: ON/OFF, cycle, phase control.
Power Supply: 100 – 240 VAC, 50/60 Hz ±10%.
Power Consumption: ≤ 8 VA.
Control Output: Relay and SSR options, Current DC 4-20/0-20 mA.

PID Temperature Control Algorithm

At the core of every Autonics Temperature Controller is a PID control algorithm, which regulates process temperature through proportional, integral, and derivative control actions. The controller continuously measures temperature through thermocouple input or RTD input, compares it with the configured temperature setpoint, and calculates the optimal control output required to maintain stable temperature conditions.

Features such as PID auto tuning, manual PID tuning, and adjustable control hysteresis allow engineers to optimize system response and maintain precise temperature stability. The control cycle time and sampling rate determine how quickly the controller responds to temperature changes, making PID control essential for high-precision industrial heating applications.

Thermocouple and RTD Sensor Measurement

Autonics temperature controllers support multiple temperature sensor types, including Type K thermocouple, Type J thermocouple, and RTD sensors such as PT100 and PT1000. These sensors convert thermal energy into electrical signals, which are processed by the controller’s temperature measurement circuit.

Advanced features such as cold junction compensation, sensor calibration, and signal conditioning ensure accurate temperature readings even in harsh industrial environments. These measurement capabilities allow reliable process temperature monitoring in equipment such as industrial furnaces, extrusion machines, and textile processing systems.

Control Outputs: Relay, SSR, and Analog

Temperature controllers regulate heating or cooling systems using various control output mechanisms. A relay output directly switches electrical loads such as heaters or cooling systems, making it suitable for general-purpose temperature control applications.

For high-speed switching and longer device life, controllers provide SSR drive output, which operates solid-state relays for more precise temperature regulation. Some industrial applications require analog output control, enabling proportional control of actuators, valves, or power regulators. The selection of output type depends on the heating system design and required temperature control accuracy.

Industrial Communication and PLC Integration

Autonics temperature controllers support industrial communication interfaces such as RS-485 communication with Modbus RTU protocol, allowing integration with PLC systems, SCADA platforms, and industrial HMI interfaces.

Through these communication networks, plant engineers can implement remote temperature monitoring, data logging, and real-time process visualization. This connectivity enables centralized temperature control across multiple machines and supports integration with industrial automation networks and industrial IoT platforms.

Digital Temperature Controller Architecture

Autonics controllers are designed as panel mount digital temperature controllers, typically installed in industrial control panels following DIN size controller standards. Internally, the controller includes a temperature measurement circuit, signal processing unit, PID control processor, and output control stage.

Some advanced models support multi-loop temperature control, enabling multiple temperature zones to be regulated simultaneously. These devices are widely used in industrial process controllers where multiple heating zones must maintain independent temperature stability.

Product List:

Model No	Display Method	Sampling Cycle	Control Output	Power Supply	Protection Structure
TK4S-B4CN	4-digit 7-segment LED	50ms	Current(DC0/4-20mA) or SSR drive(11VDC ) [ON/OFF]	100-240VAC~ 50/60Hz	IP65
TCN4S-24R	4-digit 7-segment LED	100ms	Relay(250VAC~ 3A) or SSR drive(12VDC ) [ON/OFF]	100-240VAC~ 50/60Hz	Radial cable type
TM4-N2RE	Non-display	100ms	250 VAC~ 3A 1a, 30 VDC 3A 1a	24VDC ±10%	Axial cable type
TK4S-T4CN	4-digit 7-segment LED	50ms	Current(DC0/4-20mA) or SSR drive(11VDC ) [ON/OFF]	100-240VAC~ 50/60Hz	IP65
TX4S-14R	4-digit 11-segment LCD	50ms	Relay (250VAC~ 3A, 30VDC 3A)	100-240VAC~ 50/60Hz	IP50

Frequently Asked Questions

What is an Autonics Temperature Controller?

An Autonics Temperature Controller is a digital process controller used to regulate temperature in industrial heating or cooling systems. It receives temperature feedback from sensors such as thermocouples or RTD sensors, compares the measured value with the configured temperature setpoint, and adjusts the heating or cooling output using PID control algorithms. This closed-loop temperature control ensures stable process conditions in industrial equipment.

How does an Autonics Temperature Controller work?

The controller measures temperature using thermocouple or RTD inputs, processes the signal through a temperature measurement circuit, and compares it with the desired temperature setpoint. The internal PID control algorithm calculates the required control output and adjusts heating or cooling devices accordingly. This continuous feedback loop maintains precise temperature stability.

What is PID temperature control?

PID temperature control refers to a control method using proportional, integral, and derivative algorithms to regulate temperature. The controller continuously analyzes the temperature error and adjusts the output to stabilize the process temperature quickly and accurately.

What sensors are used with Autonics temperature controllers?

Autonics controllers typically use thermocouple sensors such as Type K or Type J, and RTD sensors such as PT100 or PT1000. These sensors convert temperature into electrical signals that the controller processes to maintain accurate temperature regulation.

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