How to Choose the Right Industrial Automation Products

How to Choose the Right Industrial Automation Products

Choosing the right industrial automation products is an important decision for manufacturers, OEMs, automation integrators, electrical contractors and industrial maintenance teams.

An automation system may contain dozens or even thousands of components working together. Sensors detect operating conditions, controllers process information, motors and drives create movement, actuators perform physical actions, HMIs provide operator control and networking equipment allows different devices to communicate.

If the wrong component is selected, the consequences can extend far beyond the individual product.

An unsuitable sensor can produce unreliable readings. An incompatible controller can create integration problems. An incorrectly specified motor or drive can affect machine performance. Poor-quality electrical components can contribute to failures and downtime.

For this reason, selecting industrial automation products should not simply be about finding the cheapest available component.

The right approach is to understand the application, define the technical requirements, evaluate compatibility and environmental conditions, consider reliability and maintenance, and select products from manufacturers and suppliers that can provide appropriate technical information and support.

In this guide, we explain the most important factors to consider when choosing industrial automation products for manufacturing, engineering and industrial applications.

What Are Industrial Automation Products?

Industrial automation products are the components and equipment used to automate, monitor, control and maintain industrial processes.

Depending on the application, an automation system may require products such as:

• PLCs
• HMIs
• Sensors
• Industrial switches
• Relays
• Contactors
• Motors
• Variable frequency drives
• Servo motors
• Servo drives
• Actuators
• Industrial power supplies
• Networking equipment
• Control panel components
• Safety devices
• Electrical connectors
• Cable preparation tools
• Industrial adhesives
• Technical sprays
• Maintenance products

Some products perform the primary control function, while others support electrical installation, equipment protection, maintenance and system reliability.

This means the term industrial automation products covers a very broad range of technologies.

The right product depends entirely on what you are trying to achieve.

Start With the Application — Not the Product

One of the most common mistakes when selecting automation equipment is starting with a product instead of the application.

For example, someone might search for:

"Best industrial sensor"

But there isn't one sensor that is best for every application.

The correct sensor depends on:

• What needs to be detected
• Detection distance
• Material
• Temperature
• Moisture
• Dust
• Required accuracy
• Response time
• Electrical output
• Installation environment

The same principle applies to almost every automation component.

Instead of asking:

"Which product should I buy?"

Start with:

"What problem am I trying to solve?"

Once the application is clearly defined, the appropriate product specifications become much easier to determine.

Step 1 — Define the Automation Requirement

Before selecting any product, document the process you want to automate.

Ask:

What does the system need to do?

For example:

• Detect products
• Control movement
• Measure temperature
• Monitor pressure
• Control a motor
• Automate packaging
• Inspect products
• Move materials
• Control a production sequence

What are the inputs?

Inputs may include:

• Sensors
• Switches
• Encoders
• Push buttons
• Measurement devices

What are the outputs?

Outputs may control:

• Motors
• Valves
• Relays
• Actuators
• Solenoids
• Indicators

What information needs to be monitored?

This could include:

• Temperature
• Pressure
• Speed
• Position
• Production quantity
• Machine status
• Fault conditions

Clearly defining the process provides the foundation for selecting the right automation products.

Step 2 — Understand the System Architecture

Before buying individual components, understand how the complete system will work.

A basic automation architecture may look like:

Sensors → PLC → Outputs → Actuators → Machine

A more advanced system may look like:

Sensors → PLC → Industrial Network → HMI/SCADA → Production System

Additional systems may include:

• Safety controllers
• Robotics
• Vision systems
• Servo systems
• Drives
• Remote I/O
• Industrial computers

Understanding this architecture helps prevent compatibility problems later.

Step 3 — Choose the Right Sensors

Sensors are often the first point of contact between the physical process and the automation system.

The sensor must be suitable for what it needs to detect.

Proximity Sensors

Useful for detecting the presence or position of objects.

Photoelectric Sensors

Useful where light-based detection is appropriate.

Temperature Sensors

Used to monitor process or equipment temperature.

Pressure Sensors

Used in pneumatic, hydraulic and process applications.

Flow Sensors

Used to monitor fluid or gas movement.

Level Sensors

Used to detect the level of liquids or materials.

Position Sensors

Used to determine the position of mechanical components.

When choosing a sensor, consider:

• Detection method
• Range
• Accuracy
• Response time
• Output type
• Mounting
• Environmental conditions
• Electrical requirements

Step 4 — Select the Right PLC

The PLC is often the central controller of an automation system.

When selecting a PLC, consider:

Number of Inputs

How many sensors and other input devices need to be connected?

Number of Outputs

How many devices need to be controlled?

Input and Output Types

For example:

• Digital
• Analogue
• High-speed
• Specialised signals

Processing Requirements

More complex applications may require greater processing capability.

Communication

Determine which devices need to communicate with the PLC.

Expansion

Consider whether additional inputs, outputs or communication modules may be required in the future.

Software

The programming environment and available support should also be considered.

Choosing a PLC with appropriate capacity can make future expansion much easier.

Step 5 — Select the Right HMI

If operators need to interact with the system, an HMI may be required.

Consider:

• Screen size
• Resolution
• Touchscreen requirements
• Communication protocols
• Number of connected devices
• Environmental rating
• Mounting requirements
• User interface requirements

The HMI should provide operators with the information they need without making the system unnecessarily complicated.

Step 6 — Choose Motors and Drives Correctly

Motors are responsible for converting electrical energy into mechanical movement.

However, simply choosing a motor with the correct power rating isn't always enough.

Consider:

• Required torque
• Operating speed
• Load
• Duty cycle
• Starting requirements
• Environmental conditions
• Precision requirements
• Control method

Depending on the application, you may require:

• AC motor
• DC motor
• Servo motor
• Stepper motor

A Variable Frequency Drive may also be required for controlling an AC motor.

For precision applications, a servo motor and servo drive may be more appropriate.

Step 7 — Consider Electrical Components

Automation systems depend on reliable electrical infrastructure.

Depending on the application, this can include:

• Relays
• Contactors
• Circuit protection
• Terminal blocks
• Connectors
• Power supplies
• Switches
• Control panel components
• Wiring accessories

These products may not receive as much attention as PLCs or robots, but they can have a significant impact on system reliability.

An automation system can only operate reliably when its supporting electrical infrastructure is correctly designed and maintained.

Step 8 — Check Compatibility

Compatibility is one of the most important factors when selecting automation products.

Before purchasing a component, determine whether it will work with the existing system.

Check compatibility with:

• PLC
• HMI
• Sensors
• Drives
• Motors
• Industrial networks
• Power supply
• Existing machinery
• Software

Also check communication protocols where applicable.

A product can have excellent specifications but still be unsuitable if it cannot communicate or integrate correctly with the rest of the system.

Step 9 — Consider the Operating Environment

Industrial environments can be extremely demanding.

Equipment may be exposed to:

• Dust
• Water
• Humidity
• Heat
• Cold
• Chemicals
• Vibration
• Corrosion
• Mechanical impact

A component designed for a clean indoor environment may not be appropriate for a harsh industrial environment.

Before selecting a product, understand the conditions in which it will operate.

Step 10 — Check Temperature Requirements

Temperature can have a significant impact on equipment performance.

Consider:

• Minimum operating temperature
• Maximum operating temperature
• Heat generated by nearby equipment
• Cooling requirements
• Outdoor exposure

This is particularly important in Australian industrial environments where equipment may be exposed to high ambient temperatures depending on location and application.

Step 11 — Consider Dust and Moisture

Dust and moisture can affect electrical and electronic components.

Where relevant, evaluate the enclosure and protection requirements of the equipment.

Depending on the application, businesses may need products designed for environments where:

• Dust is present
• Water exposure is possible
• Cleaning procedures are frequent
• Humidity is high

Environmental protection should be considered during the design stage rather than after equipment has already been installed.

Step 12 — Consider Chemical Exposure

Industrial facilities may expose equipment to:

• Oils
• Solvents
• Cleaning chemicals
• Industrial fluids
• Corrosive substances

If a component will be exposed to chemicals, check the manufacturer's compatibility information before selecting it.

This is particularly important for:

• Cables
• Seals
• Enclosures
• Sensors
• Connectors
• Adhesives
• Coatings

Step 13 — Consider Mechanical Stress

Industrial equipment can experience:

• Vibration
• Shock
• Continuous movement
• Mechanical loads

Components must be capable of operating reliably under these conditions.

This is particularly relevant to:

• Sensors
• Connectors
• Cables
• Motors
• Drives
• Control panels

Correct mounting and installation are equally important.

Step 14 — Think About Maintenance

Choosing a product should include consideration of how it will be maintained.

Ask:

• Can the component be easily inspected?
• Are replacement products available?
• Is documentation available?
• Can technicians troubleshoot it?
• Are consumables required?
• Can common failures be diagnosed quickly?

A component that is difficult to maintain can increase the total cost of ownership.

Step 15 — Consider Product Availability

Product availability is particularly important for critical automation equipment.

If a component fails and replacement stock is difficult to obtain, the resulting downtime can be expensive.

When selecting industrial automation products, consider:

• Local availability
• Lead times
• Replacement availability
• Supplier inventory
• Manufacturer support
• Alternative products

For critical components, businesses may also consider maintaining appropriate spare parts.

Step 16 — Evaluate the Manufacturer

The manufacturer matters.

Look for companies with:

• Established industry experience
• Technical documentation
• Product support
• Quality management
• Consistent product availability
• Clear specifications
• Replacement support

A recognised manufacturer can provide greater confidence when products are being used in critical industrial applications.

Step 17 — Don't Choose Based Only on Price

Price is important.

But it shouldn't be the only factor.

The real cost of an automation component can include:

Purchase Price + Installation + Maintenance + Replacement + Downtime

A cheaper component that fails more frequently may ultimately cost more than a higher-quality product.

This is why businesses should consider total cost of ownership.

Step 18 — Consider the Cost of Downtime

Downtime can be much more expensive than the price difference between two components.

Imagine a critical production machine stops because of a failed component.

The business may experience:

• Lost production
• Delayed orders
• Labour costs
• Emergency maintenance
• Customer disruption
• Replacement costs

For critical applications, reliability should therefore be a major consideration.

Step 19 — Consider Future Expansion

Automation systems often evolve.

A business may initially automate one production process and later expand the system.

When selecting components, consider whether the system can support future expansion.

For example:

• Additional PLC I/O
• Additional sensors
• More network devices
• Additional machines
• Additional production lines

Planning for expansion can reduce the cost and complexity of future upgrades.

Step 20 — Consider Technical Support

Technical support can be extremely valuable when selecting automation products.

A good industrial supplier should be able to help customers understand:

• Product specifications
• Compatibility
• Applications
• Installation considerations
• Product alternatives
• Maintenance requirements

For complex applications, technical guidance can help prevent incorrect product selection.

Industrial Automation Products for Different Applications

Different applications require different product combinations.

Manufacturing

Common requirements can include:

• PLCs
• Sensors
• HMIs
• Motors
• Drives
• Robotics
• Safety systems
• Industrial networking

Mining

Mining environments may require products capable of operating under demanding conditions involving dust, vibration, temperature and continuous operation.

Food Processing

Applications can involve automated processing, packaging, conveyors, inspection and material handling.

Automotive

Automation can support:

• Assembly
• Welding
• Inspection
• Material handling
• Machine tending

Electrical Engineering

Electrical professionals may require:

• Cable preparation tools
• Wire stripping tools
• Connectors
• Electrical accessories
• Testing equipment

OEM Manufacturing

OEMs often require reliable components that can be integrated into machines and supplied consistently over the product lifecycle.

How Spleca Can Help You Choose the Right Products

Selecting the right industrial automation products can be complicated when multiple components, specifications and application requirements need to be considered.

Spleca supplies industrial automation products, electrical components, maintenance solutions, technical sprays, industrial adhesives, cable preparation tools and engineering products for Australian businesses.

Our product range can support applications across:

• Manufacturing
• Industrial automation
• Mining
• Electrical engineering
• Automotive
• Food processing
• Infrastructure
• Marine
• OEM manufacturing
• Industrial maintenance

Rather than simply selecting products based on price, businesses can work with suppliers who understand the application and can help identify appropriate solutions.

Whether you need a single industrial component or products for a larger project, the objective should always be the same:

Choose the right product for the right application.

Industrial Automation Product Selection Checklist

Before purchasing a component, ask:

Application

• What problem does the product need to solve?
• What process will it be used for?

Technical

• What voltage is required?
• What current is required?
• What performance is required?
• What communication protocol is required?

Environment

• What temperature will it experience?
• Is dust present?
• Is moisture present?
• Will chemicals be present?
• Is vibration expected?

Compatibility

• Will it work with existing equipment?
• Is the communication protocol compatible?
• Is the power supply suitable?

Reliability

• Is the manufacturer reputable?
• What is the expected service life?
• Is replacement stock available?

Maintenance

• Is technical documentation available?
• Can technicians service the product?
• Are spare parts available?

Commercial

• What is the purchase cost?
• What is the installation cost?
• What is the maintenance cost?
• What is the potential cost of failure?

Common Mistakes When Buying Industrial Automation Products

Mistake 1 — Buying the Cheapest Product

Lowest price doesn't always mean lowest total cost.

Mistake 2 — Ignoring Compatibility

A technically impressive product is useless if it doesn't integrate with the existing system.

Mistake 3 — Ignoring the Environment

A component must be suitable for the conditions in which it operates.

Mistake 4 — Not Planning for Maintenance

Equipment will eventually require servicing or replacement.

Mistake 5 — Ignoring Product Availability

Long lead times can create unnecessary downtime.

Mistake 6 — Not Considering Future Expansion

A system that cannot easily expand may become expensive to upgrade.

Mistake 7 — Choosing Without Technical Information

Always review manufacturer specifications and application requirements before purchasing critical components.

The Importance of Buying From a Reliable Industrial Supplier

The supplier you choose can be almost as important as the product itself.

A reliable industrial supplier should provide:

• Genuine products
• Clear specifications
• Technical information
• Product documentation
• Reliable availability
• Responsive support
• Appropriate product recommendations

For Australian businesses, local supply and responsive support can also make procurement and maintenance easier.

The objective is not simply to buy a component.

It is to build a reliable supply relationship that supports the equipment throughout its lifecycle.

Frequently Asked Questions

What are industrial automation products?

Industrial automation products are components and equipment used to control, monitor and automate industrial processes. They include PLCs, sensors, HMIs, motors, drives, actuators, networking equipment, electrical components and supporting maintenance products.

How do I choose the right industrial automation product?

Start by defining the application and technical requirements. Then consider compatibility, environmental conditions, performance, reliability, maintenance, availability and total cost of ownership.

What should I consider when buying automation components?

Consider the application, electrical specifications, environmental conditions, compatibility, manufacturer reputation, product availability, technical support and maintenance requirements.

Should I choose industrial automation products based on price?

Price is one consideration, but it should not be the only factor. Reliability, compatibility, maintenance and the potential cost of downtime should also be considered.

What industrial automation products are commonly used in manufacturing?

Common products include PLCs, HMIs, sensors, motors, variable frequency drives, servo systems, actuators, safety equipment, industrial networking components and electrical accessories.

Why is compatibility important?

Automation components need to communicate and operate correctly with the rest of the system. Incorrect compatibility can result in integration problems, poor performance or equipment failure.

How important is technical support?

Technical support can be particularly valuable for complex automation systems because it can help businesses understand specifications, compatibility, applications and product alternatives.

Where can Australian businesses source industrial automation products?

Australian businesses should consider established industrial suppliers that provide genuine products, technical information, reliable availability and application support. Spleca supplies industrial automation products and related engineering solutions across Australia.

Conclusion

Choosing the right industrial automation products requires more than comparing product prices or specifications.

The best product is the one that is appropriate for the application, compatible with the existing system, capable of operating in the required environment and supported throughout its lifecycle.

Businesses should consider the complete picture:

Application → Specifications → Compatibility → Environment → Reliability → Maintenance → Availability → Total Cost

This approach can help manufacturers, OEMs, engineers and industrial businesses make better purchasing decisions while reducing the risk of equipment problems and unnecessary downtime.

As Australian manufacturing continues to adopt automation, robotics, connected equipment and Industry 4.0 technologies, selecting reliable industrial automation products will become increasingly important.

Spleca provides industrial automation products, electrical components, technical sprays, industrial adhesives, cable preparation tools and engineering solutions for businesses across Australia.

Need help selecting the right product for your application?

Explore Spleca's product range or contact our technical team for assistance.

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