Bachmann AIO288/3 Analog Input/Output Module

Overview

The Bachmann AIO288/3 is a high-performance analog input/output module for the M1 automation system. It combines multiple analog input and output channels in a compact unit. The module suits process control applications needing precise signal acquisition and output control. Typical uses include energy systems, industrial machinery, and infrastructure automation. It supports both voltage and current signals and provides reliable channel-level diagnostics.

Technical Specifications

• Model: AIO288/3

• Function: Analog input/output module

• Analog Inputs: 8 channels, single-ended or differential

• Input Signal Types: Voltage (±10 V, ±1 V), Current (0–20 mA, 4–20 mA)

• Input Impedance: Voltage >100 kΩ, Current 243 Ω

• Basic Accuracy: ±0.05% for voltage, ±0.1% for current

• Sample Time: 200 μs

• Temperature Inputs: Up to 4 channels for Pt100/Pt1000 sensors, 2-wire or 4-wire

• Temperature Range: −100°C to +500°C

• Temperature Accuracy: Max ±0.1% of measuring range (600 K)

• Analog Outputs: 8 channels, voltage ±10 V, current 0–20 mA, 4–20 mA

• Output Accuracy: Max ±0.025% of measuring range

• Refresh Cycle Time: 200 μs

• Potentiometer Supply: Up to 4 channels, ±10 V, max load 40 mA

• Diagnostics: Channel-level fault detection, status monitoring, wire break detection

• Isolation: Galvanic isolation between channels and system bus

• Power Supply: 24 VDC

• Operating Temperature: 0°C to +60°C

• Mounting: DIN rail or panel mount