High-Density Analog Processing for Distributed Control
The Schneider DAU 104 operates as a versatile process module within the Compact 984 family, delivering reliable analog I/O handling for distributed control applications. This module provides 8 analog input channels and 8 analog output channels, offering balanced signal processing for continuous process control. Its robust housing measures 200 mm in height, 80 mm in width, and 150 mm in depth, accommodating standard mounting rails. The total weight reaches approximately 1.2 kg, ensuring stable installation in vibrating industrial environments.
Each analog channel supports 4-20 mA current loops and 0-10 V voltage signals, providing flexibility for various field instruments. The following table details the complete technical specifications for this process module:
| Parameter | Specification |
|---|---|
| Product Brand | Schneider Electric |
| Product Model | DAU 104 |
| Product Category | Process Module |
| Platform Compatibility | Compact 984 |
| Analog Input Channels | 8 (differential) |
| Analog Output Channels | 8 (single-ended) |
| Input/Output Signal Types | 4-20 mA, 0-10 V |
| Resolution | 12-bit (input), 12-bit (output) |
| Dimensions (H x W x D) | 200 mm x 80 mm x 150 mm |
| Weight | 1.2 kg |
| Supply Voltage | 24 V DC |
| Power Consumption | 8 W typical |
| Communication Interface | Modbus RTU over RS-485 |
| Operating Temperature | -10°C to +55°C |
| Storage Temperature | -40°C to +85°C |
| Isolation Voltage | 1500 V AC (field-to-logic) |
Channel Architecture and Signal Processing
The 8 input channels feature differential configuration, effectively rejecting common-mode noise in long cable runs. The 8 output channels operate as single-ended connections, simplifying wiring to actuators and control valves. Built-in diagnostic circuits continuously monitor each channel for open-circuit or short-circuit conditions. This diagnostic capability allows operators to identify faults before they affect production quality.
Communication and Network Integration
The DAU 104 incorporates a Modbus RTU communication interface over RS-485, enabling seamless integration with Modicon PLCs and third-party systems. This network connection supports multi-drop configurations with up to 31 devices on a single bus. The module also offers configurable baud rates from 1200 to 19200 bps, matching system requirements. Engineers can therefore deploy this module in both new installations and legacy system upgrades.
Power Architecture and Environmental Durability
A 24 V DC supply powers all internal circuits and drives the analog output stages with sufficient current capability. Operating temperatures from -10°C to +55°C accommodate a wide variety of factory floor conditions. The storage temperature range from -40°C to +85°C ensures component integrity during extreme transport scenarios. A 1500 V AC isolation barrier protects the control logic from field-side transients and ground-potential differences.
Details
| Weight | 0.91 kg |
|---|---|
| Dimensions | 110 × 55 × 90 mm |
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