Signal Conditioning and Amplification
The DAV 109 functions as a Logistat amplifier module within Schneider Electric control systems. It conditions and amplifies low-level signals from diverse industrial sensors effectively. The unit accepts inputs from thermocouples, RTDs, and strain gauges. It also handles DC voltage signals from pressure or flow transmitters. Consequently, it provides a clean, linearized analog output for PLCs and controllers.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Schneider Electric |
| Model | DAV 109 |
| Category | Logistat Amplifier Module |
| Input Signal Types | Thermocouples (J, K, T), RTDs (Pt100), strain gauges, DC voltage |
| Input Impedance | > 1 MΩ (voltage mode) |
| Output Signal Types | 0-10 VDC or 4-20 mA (selectable) |
| Output Load | 600 Ω minimum (voltage), 500 Ω maximum (current) |
| Accuracy | ±0.1% of full scale at 25°C |
| Temperature Drift | ±0.005% per °C |
| Power Supply | 24 VDC ±10% (regulated) |
| Current Consumption | 60 mA (typical) |
| Operating Temperature | 0°C to +55°C |
| Storage Temperature | -25°C to +85°C |
| Dimensions | 9.0 cm x 7.0 cm x 5.5 cm |
| Weight | 0.3 kg |
| Mounting Type | DIN rail (35 mm, symmetrical) |
| Protection Rating | IP20 (cabinet installation) |
Configuration and Adjustment
The DAV 109 provides extensive configuration options through DIP switches. You can select input range and output format according to sensor specifications. Furthermore, zero and span potentiometers enable fine calibration for each channel. The module also features a linearization circuit for thermocouple types J, K, and T. This ensures accurate temperature measurement across a wide measurement range. Additionally, the unit includes a filter capacitor for noise suppression on the input signal. The module stores calibration settings permanently in non-volatile memory. Users can adjust the output offset to match specific application requirements.
Application and Integration
This amplifier module finds use in temperature monitoring and process control. Common applications include kiln temperature regulation, pressure loop conditioning, and weighing systems. The DIN rail mounting simplifies installation in standard industrial cabinets. The module connects easily to sensors using screw terminal blocks for secure wiring. System integrators appreciate the fail-safe design that defaults to a known output state. The DAV 109 provides a reliable signal conditioning solution for retrofit and new installations. Furthermore, its compact footprint allows installation in densely populated panels.
Diagnostic Features
The DAV 109 includes a red diagnostic LED for immediate fault identification. This indicator lights when the input circuit detects an open sensor condition. The module also incorporates a green power LED that confirms supply voltage presence. These features reduce troubleshooting time and improve system maintainability. Moreover, the module’s self-diagnostic routine runs continuously during operation.
Power Supply and Environmental Tolerance
The DAV 109 draws only 60 mA from a 24 VDC supply, minimizing cabinet heat dissipation . The IP20 rating protects against accidental contact and dust ingress. This makes it suitable for clean industrial environments with panel protection.
Details
| Weight | 0.91 kg |
|---|---|
| Dimensions | 110 × 55 × 90 mm |
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