Bachmann AIO288/1 Analog Input/Output Module

Overview

The Bachmann AIO288/1 is a versatile and high-performance analog input/output module. It features 8 analog input channels and 8 analog output channels, making it an ideal solution for industrial automation systems. Designed for precise signal processing, it offers various input and output options, including voltage, current, and temperature sensors. This module ensures reliable operation with high accuracy, excellent noise rejection, and robust protection features.

Key Features

8 Analog Inputs: Supports both voltage and current inputs for flexible signal acquisition.
8 Analog Outputs: Provides stable voltage outputs with high precision.
Temperature Sensor Support: Can connect up to 4 Pt100/Pt1000 temperature sensors for precise temperature monitoring.
Potentiometer Power Supply: Capable of powering up to 4 potentiometers for additional flexibility.
Cable Break Detection: Includes built-in cable break detection for voltage and temperature inputs.
Short Circuit Proof: Outputs are short-circuit proof, ensuring safe operation.
Overload Detection: Monitors potentiometer power supplies for overload conditions.

Technical Specifications

Voltage Inputs

Feature	Specification
Number of Inputs	8
Input Voltage	±1 V or ±10 V
Input Impedance	> 100 kΩ
Digital Resolution	14-bit
Common Mode Voltage	Max. ±1 V
Accuracy at 25°C	Max. ±0.05% of input voltage range
Input Cutoff Frequency	1.5 kHz (3 dB)
Common Mode Rejection	> 60 dB
Sampling Time	200 µs

Voltage Outputs

Feature	Specification
Number of Outputs	8
Output Voltage	±10 V
Digital Resolution	14-bit
Common Mode Voltage	Max. ±1 V
Accuracy at 25°C	Max. ±0.025% of measuring range
Settling Time	Max. 400 µs
Common Mode Rejection	> 60 dB
Refresh Cycle Time	200 µs

Current Inputs

Feature	Specification
Number of Inputs	8
Input Current	0 mA to 20 mA
Input Impedance	243 Ω
Max Input Current	35 mA (destruction limit)
Digital Resolution	14-bit
Accuracy at 25°C	Max. ±0.1% of measuring range (20 mA)
Input Cutoff Frequency	1.5 kHz (3 dB)
Sampling Time	200 µs

Temperature Inputs

Feature	Specification
Number of Inputs	4
Sensor Type	Pt100, Pt1000 (selectable)
Temperature Range	-100 °C to +500 °C
Input Impedance	> 100 kΩ
Accuracy at 25°C	Max. ±0.1% of measuring range (600 K)
Sampling Time	200 µs
Galvanic Isolation	500 V

Potentiometer Power Supply

Feature	Specification
Number of Outputs	4
Voltage Range	±10 V
Accuracy at 25°C	Max. ±100 mV
Load Capacity	Max. 40 mA

Power Supply

External Voltage Range: 18 V DC to 34 V DC
Galvanic Isolation from System: 500 V (only AIO288)

Environmental Specifications

Feature	Specification
Operating Temperature	-30°C to +60°C
Storage Temperature	-40°C to +85°C
Relative Humidity (Operation)	5% to 95% non-condensing
Relative Humidity (Storage)	5% to 95% with condensation
Pollution Degree	2 (non-condensing)