The Schneider AS-B872-100 is a high-performance analog output module from the 800 Series, engineered for precise control in industrial automation environments. This module provides four independent output channels, specifically designed to support the standard 4 to 20 mA current loop range. With a robust design capable of handling a maximum loop supply voltage of 60 VDC, it integrates seamlessly into a wide variety of process control architectures.
The module utilizes 12-bit resolution to ensure high-fidelity signal output, maintaining a 0.1% full-scale accuracy rating at 25 degC. Its linearity is maintained at ± 1 LSB across an operating temperature range of 0 to 60 degC. Designed for high-speed applications, the AS-B872-100 achieves update times of less than 1 millisecond across all four channels, ensuring minimal latency in critical control loops.
Features
Four independent analog output channels.
Standard 4 to 20 mA output range.
12-bit resolution for precise signal generation.
High-speed processing with <1 ms update time for all channels.
Compact single-slot module design for efficient rack utilization.
Low power consumption profile for improved thermal management.
Technical Specifications
Manufacturer
Schneider Electric
Product Line
800 Series
Part Number
AS-B872-100
Channels
4
Operating Range
4 to 20 mA
Max Loop Supply Voltage
60 VDC
Resolution
12 bit
Accuracy
0.1% of full scale at 25 degC
Linearity
0 to 60 degC, ± 1 LSB
Update Time
<1 ms (all channels)
Power Requirements
5 V @ 475 mA, +4.3 V @ 5 mA, -5 V @ 0 mA
Installation Guidelines
Ensure the system power is disconnected before inserting or removing the module from the rack.
Handle the module using proper ESD (Electrostatic Discharge) precautions to prevent damage to internal circuitry.
Ensure the module is fully seated in the designated slot to guarantee proper backplane connection.
Route signal wiring away from high-voltage cables and high-EMI sources to maintain signal integrity.
Verify that the ambient operating temperature remains within the 0 to 60 degC range and that ventilation is adequate for the rack assembly.
FAQ
What is the primary function of the AS-B872-100? This is an analog output module used to convert digital control signals from the PLC into 4-20 mA current signals for field devices like actuators, valves, or positioners.
Does this module require external power for the loops? The module supports a loop supply voltage of up to 60 VDC. Ensure your field loop power supply is compatible with this specification.
