Technical Review: Mitsubishi AX82 Input Module - Selection Guide & Specs
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Overview: Solving Industrial Input Signal Challenges
The Mitsubishi AX82 Input Module addresses a critical industrial automation pain point: reliable signal acquisition in harsh manufacturing environments. This digital input module serves as the frontline interface between field devices and your PLC system, converting physical switch states and sensor signals into digital data that your control system can process. For engineers dealing with signal noise, voltage compatibility issues, or expanding existing Mitsubishi PLC systems, the AX82 provides a robust solution with proven reliability.
Technical Specifications Analysis
The Mitsubishi AX82 is designed for industrial-grade performance with specifications optimized for factory automation applications. Here's a detailed breakdown of its technical capabilities:
| Specification | Details |
|---|---|
| Module Type | Digital Input Module |
| Input Points | 16 points (standard configuration) |
| Input Voltage | 24V DC (standard industrial voltage) |
| Input Current | Approximately 7mA per point at 24V DC |
| Response Time | 1ms typical (fast enough for most industrial applications) |
| Isolation | Photocoupler isolation between input circuits and internal logic |
| Operating Temperature | 0°C to 55°C (32°F to 131°F) |
| Storage Temperature | -25°C to 75°C (-13°F to 167°F) |
| Humidity Range | 10% to 95% RH (non-condensing) |
| Vibration Resistance | 10-57Hz, 0.075mm amplitude (industrial grade) |
| Shock Resistance | 147m/s² (15G) in X, Y, Z directions |
| Warranty | 1 year comprehensive warranty |
| Compatibility | Mitsubishi A Series PLC systems |
The module's photocoupler isolation provides critical protection against electrical noise and ground loops, making it ideal for environments with heavy machinery and variable frequency drives. The 24V DC input voltage aligns with standard industrial control voltages, ensuring compatibility with most industrial sensors and limit switches.
Buying Considerations
When selecting the Mitsubishi AX82 Input Module for your application, consider these critical factors:
- System Compatibility: Verify compatibility with your existing Mitsubishi A Series PLC base unit. The AX82 module requires proper slot allocation in your PLC rack system.
- Input Requirements: Calculate your total input point requirements. The AX82 provides 16 points - ensure this matches your current needs with room for future expansion.
- Voltage Matching: Confirm your field devices operate at 24V DC. While this is standard, some legacy systems may use different voltages requiring additional signal conditioning.
- Environmental Conditions: Assess your operating environment. The AX82's temperature range (0-55°C) suits most industrial applications, but extreme conditions may require additional protection.
- Wiring Considerations: Plan your wiring infrastructure. The module uses standard terminal connections - ensure you have proper wire gauges and cable management for all 16 input channels.
- Maintenance Planning: Consider the 1-year warranty period and plan for spare modules in critical applications to minimize downtime during maintenance cycles.
For complex automation systems, you may also need to consider complementary components like output modules, communication modules, and proper power supplies.
Frequently Asked Questions
1. Can the Mitsubishi AX82 Input Module handle both AC and DC signals?
No, the AX82 is specifically designed for 24V DC input signals only. For AC signal applications, you would need to select a different input module from Mitsubishi's product line designed for AC voltage ranges. Attempting to connect AC signals to the AX82 could damage the module and void the warranty.
2. What is the maximum wiring distance for reliable signal transmission?
For reliable operation with 24V DC signals, we recommend keeping wiring distances under 100 meters (328 feet) using standard 18-22 AWG wire. Longer distances may require signal conditioning or repeater modules to maintain signal integrity, especially in electrically noisy environments.
3. How does the 1-year warranty work for industrial applications?
The 1-year warranty covers manufacturing defects and component failures under normal operating conditions. For warranty claims, you'll need proof of purchase from an authorized distributor like KoeedMRO. The warranty does not cover damage from improper installation, voltage spikes beyond specifications, or environmental conditions outside the specified operating ranges. Always follow Mitsubishi's installation guidelines and use proper surge protection for industrial power systems.
