Mitsubishi MELSEC AY42 A Series PLC Output Module AY42

Description:

The Mitsubishi MELSEC AY42 A Series PLC output module is a transistor output unit used in industrial automation systems to provide high-speed DC switching signals from the PLC to field devices. Installed in control panels and PLC racks where solid-state outputs are required for controlling actuators, relays, indicators, and other automation components. Maintenance teams and system integrators use this module for system expansion, retrofit, and replacement to maintain reliable discrete output control in Mitsubishi MELSEC A-series PLC systems.

Applications:

The Mitsubishi AY42 output module is used in manufacturing automation, conveyor systems, packaging machinery, assembly lines, and material handling systems where Mitsubishi PLCs control external devices such as solenoids, relays, and indicator lights. Mitsubishi output modules provide fast, reliable transistor switching for industrial processes requiring precise control and high-speed signal response.

Technical Specifications:

• Manufacturer Part Number (MPN): AY42
• Product Type: PLC Output Module (Transistor Output)
• Series: Mitsubishi MELSEC A Series
• Output Type: Transistor (sink type)
• Number of Outputs: 16 points
• Rated Output Voltage: 12–24 V DC
• Max Load Current: 0.5 A per point (typical max 0.1–0.5A depending source)
• Max Total Current: ~4 A per common
• Response Time: Approx. 2 ms ON / 5 ms OFF
• Isolation: Photocoupler isolation
• External Power Supply: Required (12–24 V DC)
• Mounting: PLC rack mount (A-Series base)
• Indicators: LED status indicators for outputs
• Application: High-speed DC output control for PLC systems

Common Replacements:

• Mitsubishi AY41 transistor output module
• Mitsubishi AY13 output module
• Mitsubishi QY41P (newer Q-Series equivalent)