Technical Specifications
The following data highlights the core electrical and physical parameters of the 140DDI36400:
- Manufacturer: Schneider Electric
- Model: 140DDI36400
- Series: Modicon Quantum
- Input Channels: 96
- Voltage Range: 19.2 to 30V DC
- Isolation: 500 Vrms between input groups
- Bus Current: 270 mA
- Logic Type: Positive (Sinking)
- Dimensions: 6.5 x 23.5 x 25.0 cm
- Weight: 0.4 kg (shipping weight)
- Country of Origin: France
The Schneider Electric 140DDI36400 provides high-density digital signal acquisition for Modicon Quantum PLC architectures. This module features 96 discrete input channels to maximize cabinet space efficiency. It operates on a 24V DC nominal voltage and utilizes positive logic with a sinking configuration. Because it handles nearly one hundred signals in a single slot, it significantly reduces the overall hardware footprint. Consequently, this unit serves as a primary interface for large-scale sensor arrays in complex automation environments.
Technical Performance and Signal Timing
Precision timing ensures that the 140DDI36400 captures rapid state changes from field devices. The hardware provides a swift response time of 2 milliseconds during the off-to-on transition. Conversely, it requires only 3 milliseconds to register an on-to-off signal change. Internal resistors rated at 6700 ohms maintain signal stability across every channel. Furthermore, the module withstands transient voltage spikes of up to 50V for short durations. This electrical resilience protects the PLC backplane from common industrial power disturbances.
Diagnostic Visuals and Thermal Efficiency
Operators can monitor the status of all 96 inputs via a comprehensive LED array on the front panel. Each channel corresponds to a green LED that indicates an active signal state. Additionally, a dedicated red LED alerts personnel to internal module faults or configuration errors. A separate green “Active” LED confirms healthy communication with the Modicon Quantum bus. Despite its high channel count, the module maintains a low base power dissipation of 1.35 Watts. This energy-efficient design prevents heat buildup in tightly packed control enclosures.
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