Product Short Description
Product Name
Bachmann AIO288/1 Analog Input/Output Module.
Product Overview
A versatile, high-performance analog I/O module for the Bachmann M1 automation system. It features 8 analog input channels and 8 analog output channels (some sources cite 28 inputs), supporting voltage, current, and temperature sensor signals for precise industrial process acquisition and actuator control.
Description
Technical Specifications
- Part number: AIO288/1; origin: Austria
- Analog Inputs: 8 channels (voltage ±1 V / ±10 V, current 0–20 mA, 14-bit resolution, 200 µs sampling)
- Temperature Inputs: 4 channels Pt100/Pt1000, -100 to +500 °C
- Analog Outputs: 8 channels, ±10 V, 14-bit, 400 µs settling time
- Potentiometer Supply: 4 channels, ±10 V, max 40 mA
- Galvanic Isolation: 500 V between channels/system bus
- Power: external 18–34 V DC; backplane-powered variant consumes ≤3 W
- Operating temperature: -30 to +60 °C; storage: -40 to +85 °C
- Dimensions: 55 × 23 × 119 mm; weight: 0.9 kg
- Approvals: CE, UKCA, cULus; marine: ABS, BV, DNV, KR, LR, NK, RINA
Functional Features
- 8 AI / 8 AO with voltage, current, and RTD support
- Built-in cable-break detection for voltage and temperature inputs
- Short-circuit-proof outputs; potentiometer supply overload monitoring
- High CMRR and differential-mode rejection for noisy environments
- Channel-to-channel and input-to-bus isolation protects against EMI and voltage spikes
Application Scenarios
Process control in industrial automation systems: pressure and temperature acquisition, control valve and servo drive actuation, data acquisition systems, and M1 rack-based control cabinets.
Performance Parameters
- Input accuracy: ±0.05% (voltage), ±0.1% (current/temp) of range at 25 °C
- Output accuracy: ±0.025% of range at 25 °C
- Sampling/update: 200 µs refresh cycle
- CMRR: >60 dB; input impedance >100 kΩ
Material Composition
Industrial-grade analog front-end with 14-bit ADC/DAC, galvanically isolated channels, terminal-block field wiring, and conformal-coated PCB (specific laminate not specified).
Structural Characteristics
Modular rack-mount design for Bachmann M1 system; compact footprint for high-density I/O mounting; IP20 module / IP54 with M1 front cover.
Working Principle
Converts analog input signals from field sensors into digital data via 16-bit ADCs with signal conditioning (filtering, amplification, cold-junction compensation); converts digital control commands from the M1 controller into analog output signals via 16-bit DACs to drive actuators; isolation barriers block EMI and voltage transients.
Installation Requirements
Mount in Bachmann M1 rack or DIN-rail compatible carrier; wire sensors/actuators to terminal blocks; ensure 18–34 V DC external supply where used; observe ESD precautions.
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