Mitsubishi A1S64AD PLC Function Analog Input Module 4 Channel A1S64AD

Description:

The Mitsubishi A1S64AD is an analog input (A/D converter) module designed for the MELSEC-A series PLC platform, used to convert analog signals into digital data for PLC processing. Commonly installed in industrial control systems and process automation environments, it enables integration of sensors such as temperature, pressure, and flow transmitters. Maintenance teams and system integrators use this module for system expansion, signal acquisition, and replacement of legacy analog input modules.

Applications:

The Mitsubishi A1S64AD analog input module is used in industrial automation systems requiring accurate monitoring of process variables. Typical applications include temperature control systems, pressure and flow monitoring, process automation, and manufacturing systems where analog signal conversion and precise data acquisition are critical to system performance and reliability.

Technical Specifications:

• Manufacturer Part Number (MPN): A1S64AD
• Product Type: Analog Input Module (A/D Converter)
• Series: MELSEC-A
• Number of Inputs: 4 analog channels
• Input Signal Types: Voltage / Current
• Input Voltage Range: -10 to 0 to +10 VDC
• Input Current Range: -20 to 0 to +20 mA
• Resolution: 16-bit digital conversion
• Conversion Speed: Approx. 20 ms per channel
• Input Resistance:
• Voltage: 1 MΩ
• Current: 250 Ω
• Isolation: Photocoupler isolation between input and PLC power
• Max Input Limits: ±15 V (voltage), ±30 mA (current)
• Power Supply: 5 VDC (from PLC backplane)
• Current Consumption: Approx. 0.4 A
• I/O Occupation: 32 special I/O points
• Connection Type: 20-point terminal block
• Operating Temperature: 0°C to 50°C
• Mounting Type: Rack-mounted (A-series base unit)
• Status: Discontinued / legacy module

Common Replacements:

• Mitsubishi A1S68AD (higher channel version)
• Mitsubishi Q64AD (Q-series upgrade)
• Mitsubishi FX5-4AD (modern compact platform alternative)