Mitsubishi Melsec PLC System A2ACPU A63P AY13E AX82

This Mitsubishi Melsec A series PLC system comprises a complete modular control set including the A63P power supply, A2ACPU central processing unit, three AY13E output modules, and four AX82 input modules. The system is designed for medium-scale industrial automation and can be mounted on a base rack (A3B series) for machine control, assembly lines, and process monitoring.

Power Supply: A63P

The A63P is a 24V DC power supply module for the Melsec A series. Input: 100–240V AC (50/60 Hz), output: 24V DC at 3A (for I/O and CPU). Dimensions: 130 x 40 x 100 mm. Weight: 0.5 kg. It includes overcurrent and overvoltage protection with LED indicator (PWR green). The module occupies one slot.

CPU: A2ACPU

The A2ACPU is a 16-bit microprocessor-based CPU with program memory of 14K steps. Basic instruction speed: 1.25 µs. Data memory: 4K words (D registers). Built-in RS-232 port (9-pin) for programming (GX Developer). The CPU supports up to 512 I/O points and 16 special function modules. It includes a real-time clock and a lithium battery (A6BAT) for program retention (5 years). LED status: RUN, ERR, and USER.

Output Module: AY13E (x3)

The AY13E is a 16-point transistor output module (sink type, NPN). Rated voltage: 12–24V DC, 0.5A per point, 2A per common. Outputs are optically isolated and have short-circuit protection (foldback current limiting). LED per point indicates ON status. Response time: 0.5 ms. Each module occupies one slot and is addressed as 16 output points (e.g., Y0–Y15).

Input Module: AX82 (x4)

The AX82 is a 16-point 24V DC digital input module (sink/source). Input voltage range: 20.4–26.4V DC, input current 7 mA. Response time: 8 ms (adjustable to 0.5 ms via filter selection). LED per point indicates input state. Isolation: 1500 Vrms between field and backplane. Each module occupies one slot, providing 16 input points (X0–X15).

System Configuration

The modules are mounted on a Mitsubishi A3B series base rack (typically A38B or A58B). The total I/O of the system is 4 x 16 = 64 inputs (AX82) and 3 x 16 = 48 outputs (AY13E), giving 112 I/O points. The A2ACPU can control up to 512 I/O, leaving room for expansion. The system uses a dedicated bus for backplane communication.

Programming and Software

Programming is done with Mitsubishi GX Developer (version 8 or higher) via the CPU's RS-232 port. Languages: ladder diagram (LD), instruction list (IL), and SFC. The program can be stored on an optional EEPROM cassette (A6NV). Online editing and monitoring are supported.

Environmental Specifications

Operating temperature: 0 to 55°C; storage: -20 to 70°C. Humidity: 10% to 90% non-condensing. Vibration: 2 g (10–55 Hz). The modules are rated IP20 and conform to CE, UL 508, and RoHS.

Typical Applications

This system is suitable for conveyor control, packaging machines, small assembly stations, and pump logic. The high current transistor outputs can drive solenoid valves, indicator lights, and small relays directly.

Maintenance and Spares

The A2ACPU battery should be replaced every 4–5 years (part A6BAT). The power supply A63P has a replaceable fuse (3.15A, 5x20mm). All modules can be hot-swapped only after powering down the rack.

Ordering Information

This system includes: 1x A63P, 1x A2ACPU, 3x AY13E, 4x AX82. Manuals: A Series PLC Hardware Manual (IB-66724).