Description:

The Mitsubishi A1SY22 is a triac output module designed for the MELSEC-A series PLC platform, providing 16 AC output points for controlling external devices. Commonly installed in industrial control panels and automation systems, it enables PLC-based switching of AC loads such as relays, solenoids, and lamps. Maintenance teams and system integrators use this module for system expansion, output control, and replacement of legacy MELSEC-A series modules.

Applications:

This Mitsubishi output module is used in industrial automation systems requiring reliable AC load switching and output control. Typical applications include manufacturing equipment, conveyor systems, packaging machines, and process control systems where PLC-controlled outputs are used to drive actuators, relays, and signaling devices critical to system operation.

Technical Specifications:

• Manufacturer Part Number (MPN): A1SY22
• Product Type: Digital Output Module (Triac Output)
• Series: MELSEC-A
• Number of Outputs: 16 points
• Output Type: Triac (AC output)
• Rated Output Voltage: 100–240 VAC
• Frequency: 50/60 Hz
• Rated Load Current: 0.6 A per point
• Common Terminal Current: Approx. 2.4–8 A (depending config)
• Minimum Load: AC24V 100 mA (typical)
• Response Time: ~1 ms ON / OFF
• Leakage Current (OFF): ~1.5–3 mA
• Isolation: Photoelectric isolation
• Terminal Type: 20-point screw terminal block
• Power Supply: Internal 5 VDC (from PLC base)
• Current Consumption: ~270 mA (5V bus)
• Operating Temperature: 0°C to 55°C
• Storage Temperature: -20°C to 75°C
• Mounting Type: Rack-mounted (A-series base unit)
• Status: Discontinued / legacy module

Common Replacements:

• Mitsubishi A1SY40 (transistor output alternative)
• Mitsubishi QY22 (Q-series equivalent, requires system upgrade)
• Mitsubishi AJ65SBTB1 output modules (remote I/O alternative)