PID Controller Unit for Temperature Control

Product Specifications

Technical details and manufacturing context for PID Controller Unit

Definition

Within Temperature Sensors & Controllers systems, the PID Controller Unit is the computational core that continuously calculates and applies corrective actions to maintain precise temperature control. It receives input from temperature sensors, compares it to the desired setpoint, and outputs control signals to heating/cooling elements using proportional, integral, and derivative terms to minimize error and prevent oscillations. The unit is designed as a component for integration into larger machinery and equipment, typically mounted on a panel with a front interface. It operates on a 24 V DC supply (reverse polarity protected) and consumes 5–10 W depending on output load. Control accuracy is ±0.5% of full scale, with a 16-bit input resolution for analog signals. The isolated output provides a 4–20 mA signal with a maximum load of 500 Ω. Sampling time is adjustable between 100 and 500 ms. The unit operates in non-condensing environments within -20 to 60 °C, and can be stored at -40 to 85 °C. Relative humidity must remain between 10% and 90% non-condensing. The enclosure offers ingress protection from IP54 to IP65 (front panel IP65) per IEC 60529, and is made of flame-retardant PC/ABS (UL 94 V-0). Dimensions are 96×96×100 mm (W×H×D) with a panel cutout of 92×92 mm per DIN 43700, and weight ranges from 0.3 to 0.5 kg depending on options. The unit is constructed with a printed circuit board, microcontroller/processor, electronic components, and a plastic or metal housing. All listed parameters are reference ranges; verify model-specific values and standards with the legal manufacturer or supplier before procurement.

Working Principle

The unit calculates error (difference between setpoint and actual temperature), then computes three control terms: Proportional (P) responds to current error magnitude, Integral (I) accumulates past errors to eliminate steady-state offset, and Derivative (D) predicts future error based on rate of change. These terms are summed to produce a control output that adjusts the heating/cooling system. The output is a 4–20 mA signal that drives actuators such as valves or heaters. The sampling time determines how often the algorithm updates, and can be set between 100 and 500 ms to match process dynamics. The integral term helps eliminate offset, while the derivative term dampens overshoot. Proper tuning of P, I, and D gains is essential for stable control; incorrect tuning can lead to oscillation or sluggish response. The unit's input resolution of 16 bits ensures precise measurement of sensor signals.

Common Materials

Printed Circuit Board (PCB), Microcontroller/Processor, Electronic Components (resistors, capacitors, ICs), Plastic/ Metal Housing

Technical Parameters

Parameter	Typical range	Notes & selection driver
Supply Voltage	24 ±10% V DC	Reverse polarity protected
Power Consumption	5–10 W	Depends on output load
Control Accuracy	±0.5 % FS	Full scale of input range
Input Resolution	16 bit	For analog inputs
Output Type	4–20 mA	Isolated, max load 500 Ω
Sampling Time	100–500 ms	Adjustable
Operating Temperature	-20–60 °C	Non-condensing
Storage Temperature	-40–85 °C	Non-condensing
Relative Humidity	10–90 % RH	Non-condensing
Ingress Protection	IP54–IP65	Front panel IP65IEC 60529
Enclosure Material	PC/ABS	Flame retardantUL 94 V-0
Weight	0.3–0.5 kg	Depending on options
Dimensions (W×H×D)	96×96×100 mm	Panel cutout 92×92DIN 43700

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Microcontroller/Processor
Executes PID algorithm calculations and manages control logic

Material: Semiconductor (silicon)
Input Circuitry
Conditions and digitizes temperature sensor signals (thermocouple, RTD, etc.)

Material: Electronic components on PCB
Output Driver
Amplifies control signal to drive heating/cooling actuators (relays, SSRs, analog outputs)

Material: Electronic components on PCB
Display/Interface
Shows temperature readings, setpoints, and allows parameter configuration

Material: LCD/LED display with plastic overlay
Power Supply
Converts AC/DC input to regulated voltages required by internal circuits

Material: Electronic components on PCB

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Temperature Sensors & Controllers

View system integration details

Manufacturers of PID Controller Unit

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Frequently Asked Questions

What is the supply voltage and power consumption of the PID Controller Unit?

The unit requires a 24 V DC supply with ±10% tolerance and is reverse polarity protected. Power consumption is 5–10 W, depending on the output load. Always verify these values with the manufacturer for your specific model.

What is the control accuracy and input resolution?

Control accuracy is ±0.5% of full scale (FS). The input resolution for analog signals is 16 bits. These specifications are reference values; confirm with the manufacturer for your application.

What output signal does the unit provide?

The unit provides an isolated 4–20 mA output signal with a maximum load of 500 Ω. This signal is used to control heating or cooling elements. Verify the output type and load limits with the manufacturer.

What are the environmental and mechanical specifications?

Operating temperature is -20 to 60 °C, storage -40 to 85 °C, and relative humidity 10–90% non-condensing. Ingress protection is IP54 to IP65 (front panel IP65) per IEC 60529. Dimensions are 96×96×100 mm with a 92×92 mm panel cutout per DIN 43700. Weight is 0.3–0.5 kg. Always check with the manufacturer for exact specifications.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	0 to 10 bar (process connection dependent)
other spec:	Control accuracy: ±0.1% of span, Response time: <100ms, Output types: 4-20mA, 0-10V, relay
temperature:	-40°C to 85°C (operating), -55°C to 125°C (storage)

PID Controller Unit

Product Specifications

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