Mitsubishi Electric A616AD Analog Input Module

The Mitsubishi Electric A616AD analog input module adds 16 analog input channels to a MELSEC-A Series PLC, converting voltage and current signals into digital data for real-time PLC processing. It accepts voltage inputs from -10 to +10 V DC and current inputs from -20 to +20 mA DC, with a resolution up to 1/4000 (about 12-bit) and a digital output of 16-bit signed binary data; channels are isolated from the PLC via photocoupler isolation to protect the backplane. Key specs include a maximum input limit of 15 V and 30 mA, a conversion speed of ~1 ms per channel, and a power consumption of ~1 A at 5 V DC from the backplane. Hardware features include a 38-point terminal block and rack-mount compatibility with the A Series base unit; dimensions are ~37.5 × 250 × 131 mm and weight ~0.65–0.85 kg, with an operating temperature range of 0 °C to 55 °C. Typical applications span process control, temperature and pressure monitoring, flow measurement, and broader manufacturing automation where precise analog-to-digital data are needed for PLC logic and system optimization. Common replacements include Mitsubishi A1S64AD and Q64AD for equivalent A/D functionality.