Mitsubishi PLC Selection Simplified Guide
Created on 01.20
Part 1: Ask Yourself Three Questions First
1. How many I/O points are needed?
- Under 64 points → FX5U
- 64-256 points → FX5U or iQ-F
- Over 256 points → iQ-R
2. What is it used for?
- Simple machinery → FX5U/FX3U
- With servo control → FX5U + positioning module
- Complex systems → iQ-R Series
3. Any special requirements?
- Network communication → Choose models with Ethernet
- Safety requirements → Choose Safety CPU
- Harsh environments → Choose wide-temperature/high protection models
Part 2: How to Choose Each Series
FX5U Series (First Choice)
- Suitable for: Most small to medium-sized equipment
- Advantages: High cost-performance, supports CC-Link IE
- Models: FX5U-32MT/ES (32 points), FX5U-64MT/ES (64 points)
iQ-F Series
- Suitable for: Compact control
- Advantages: Small size, full functionality
- Models: FX5UJ series
iQ-R Series
- Suitable for: Large production lines, high-end equipment
- Advantages: Strong performance, good expandability
- Models: R08/16/32/64CPU
Part 3: Quick Selection Reference Table
Equipment Type | Recommended Series |
Packaging Machine | FX5U |
Injection Molding Machine | iQ-R |
Conveyor Line | FX5U |
Assembly Robot | iQ-R |
Water Treatment Equipment | iQ-F or R |
Part 4: Simple Four-Step Process
Step 1: Count the Points
- Count all input and output points, add 30% margin
- For example: actual 60 points, choose PLC with 80-100 points
Step 2: Select the CPU
- Choose corresponding series according to the table above
- If unsure, choose FX5U (good versatility)
Step 3: Configure Modules
- Add expansion modules if I/O points are insufficient
- Add positioning module if servo control is needed
- Add communication module if networking is required
Step 4: Verify Power Supply
- Ask supplier to help calculate power
- Choose power supply 20% larger than calculated value
Part 5: Common Pitfall Reminders
- Don't choose old models
- Don't choose based on exact point count
- Don't skimp on power supply
- Ensure software compatibility
Part 6: One-Sentence Summary
- Small equipment
- Medium lines
- Large systems
- Uncertain
Simplest method: tell us the equipment requirements, and we have sufficient inventory to provide it for you.
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