PLC / Temperature Controller for Industrial Temperature Control

Product Specifications

Technical details and manufacturing context for Programmable Logic Controller (PLC) / Temperature Controller

Definition

This integrated control unit serves as the central processing and command center within a Temperature Control System. It receives input signals from temperature sensors, executes programmed logic sequences for temperature regulation, and outputs control signals to heating/cooling actuators to maintain precise temperature setpoints in industrial processes. The device is designed for machinery and equipment manufacturing applications where both logic control and temperature management are required in a single component. It combines the flexibility of a programmable logic controller with dedicated temperature control features, allowing for customization of control algorithms and I/O configurations. The unit typically features a plastic or polycarbonate housing, metal connectors, and a printed circuit board with electronic components. It supports a range of digital I/O points (16–64, expandable via modules) and can interface with various sensor types, including thermocouples and RTDs, to cover a temperature control range of -200 to 600 °C. Temperature accuracy is specified as ±0.1% of full scale, with a typical accuracy better than ±0.5 °C. The control cycle time is adjustable between 50 and 500 ms, affecting response speed. Supply voltage options include 24 V DC (±10%) and 100–240 V AC, with power consumption ranging from 5 to 15 W for the base unit. The device operates in ambient temperatures from -10 to 55 °C and can be stored in -40 to 85 °C. It is rated for relative humidity of 5–95% non-condensing and offers ingress protection from IP20 (panel mount) to IP65 (standalone). Communication interfaces include RS-485 and Ethernet, supporting protocols such as Modbus RTU/TCP and Profibus. The weight varies from 0.5 to 2.0 kg depending on I/O configuration. For procurement, verify model-specific values and standards with the legal manufacturer or supplier.

Working Principle

The device operates by continuously monitoring temperature inputs via connected sensors, comparing actual values against programmed setpoints, and executing control algorithms (typically PID) to calculate and output appropriate control signals to heating or cooling elements, maintaining temperature within specified tolerances. It also executes user-programmed logic sequences for overall process control. The control cycle time is adjustable to balance response speed and stability. The device can be configured via its programming interface to set setpoints, alarm limits, and I/O assignments. It communicates with supervisory systems via RS-485 or Ethernet for monitoring and parameter changes.

Common Materials

Electronic components, Printed circuit board, Plastic/polycarbonate housing, Metal connectors

Technical Parameters

Parameter	Typical range	Notes & selection driver
Number of I/O Points	16–64 points	Digital inputs/outputs; expandable via modules
Temperature Control Range	-200–600 °C	Depends on sensor type (thermocouple, RTD)
Temperature Accuracy	±0.1 % FS	Full scale accuracy; better than ±0.5°C typical
Control Cycle Time	50–500 ms	Adjustable; affects response speed
Supply Voltage	24 ±10% V DC	Also available: 100–240 V ACIEC 61131-2
Power Consumption	5–15 W	Typical for base unit without expansion
Operating Temperature	-10–55 °C	Extended range available for industrialIEC 60068-2-1/2
Storage Temperature	-40–85 °C	Non-operatingIEC 60068-2-1/2
Relative Humidity	5–95 % RH	Non-condensingIEC 60068-2-78
Ingress Protection	IP20–IP65	IP20 for panel mount, IP65 for standaloneIEC 60529
Communication Interface	RS-485, Ethernet	Modbus RTU/TCP, Profibus, etc.IEC 61158
Weight	0.5–2.0 kg	Depends on I/O configuration

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

CPU Module
Processes control algorithms and executes programmed logic

Material: Semiconductor silicon, electronic components
I/O Module
Handles input from temperature sensors and outputs to control devices

Material: Electronic components, connectors
Power Supply Unit
Provides regulated power to all internal components

Material: Transformer, capacitors, electronic components
Communication Interface
Enables data exchange with other control systems and HMI

Material: Electronic components, connectors
Housing/Enclosure Part
Protects internal components from environmental factors

Material: Plastic, polycarbonate, or metal

Applied To / Applications

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

Temperature Control System

View system integration details

Manufacturers of Programmable Logic Controller (PLC) / Temperature Controller

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Frequently Asked Questions

What is the difference between this PLC/temperature controller and a standard PLC?

This device integrates dedicated temperature control functions, such as built-in PID algorithms and direct sensor inputs, with standard PLC logic capabilities. It is designed for applications where temperature regulation is a primary requirement, simplifying system design by combining both functions in one unit.

Which temperature sensors can be used with this controller?

The controller supports various sensor types, including thermocouples and RTDs, as indicated by the temperature control range of -200 to 600 °C. The specific sensor types and wiring must be confirmed with the manufacturer for the exact model.

Can the I/O points be expanded?

Yes, the number of I/O points is expandable via modules, with a base range of 16 to 64 points. Expansion modules can be added to increase capacity, but the maximum configuration depends on the specific model and should be verified with the supplier.

What communication protocols are supported?

The controller supports RS-485 and Ethernet interfaces, with protocols such as Modbus RTU/TCP and Profibus. The exact protocols available may vary by model, so confirm with the manufacturer for your application.

Data Basis

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

Preliminary Technical Classification

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pressure:	0-10 bar (typical process pressure range)
other spec:	Control accuracy: ±0.5°C, Response time: <2 seconds, Input voltage: 24VDC/110-240VAC, Communication: Modbus RTU/TCP, Ethernet/IP
temperature:	-20°C to +150°C (process temperature range), -10°C to +55°C (operating ambient)

Programmable Logic Controller (PLC) / Temperature Controller

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

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