Siemens SIMATIC S7-1500 AI 16xI BA Analog Input Module, 16 Channels, 0-20 mA / 4-20 mA, 16-bit, 35 mm, 6ES7531-7MH00-0AB0

Industrial automation systems often need to read many analog current signals from sensors and transmitters. The Siemens SIMATIC S7-1500 AI 16xI BA module solves this by providing 16 isolated analog input channels in a compact 35 mm housing, designed for direct DIN rail mounting in S7-1500 PLC racks.

Who is it for

This module is for control engineers and system integrators building or expanding SIMATIC S7-1500 stations that require high-density current input acquisition, such as process monitoring, data logging, or closed-loop control applications.

Main features

• 16 analog input channels for current signals (0-20 mA or 4-20 mA)
• 16-bit resolution for precise measurement
• Channel-to-backplane isolation for noise immunity
• Onboard diagnostics: wire break, short circuit, overflow/underflow
• 35 mm module width saves space in the rack
• Firmware update capable for future enhancements

Specifications

• Module type: Analog input module
• Series: SIMATIC S7-1500
• Number of inputs: 16
• Input signal type: Current (I)
• Input ranges: 0-20 mA, 4-20 mA
• Resolution: 16 bit
• Basic accuracy: ±0.3% of full scale
• Isolation: Yes, channel to backplane bus
• Supply voltage: 24 V DC from backplane bus
• Power loss: max. 0.8 W
• Operating temperature (horizontal mounting): 0 to 60 °C
• Mounting: DIN rail
• Dimensions: 35 mm width, 125 mm height, 117 mm depth
• Input resistance (current input): 100 Ohm
• Permissible input current (destruction limit): 50 mA
• Front connector: Required, separate order

Tips

Order the matching front connector separately. For 2-wire transmitters, use the 4-20 mA range and enable wire break diagnostics to detect sensor failures quickly.