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Schneider Electric 140DDI35300 Modicon Quantum Discrete Input Module
TheSchneider Electric140DDI35300，also cataloged asthe140DDI35300 discrete input module, operates as a dedicated hardware component for 24 V DC discrete signal acquisition withinModicon Quantum automation platform systems. This module executes 32-point digital input scanning through a backplane-coupled I/O structure with positive logic sensing.
Configured for parallel field signal acquisition inModicon Quantum automation platform,theSchneider Electric 140DDI35300(140DDI35300Discrete Input Module) provides direct physical/electrical execution via 24 V DC sink-type input channels with grouped signal conditioning.
Suffix Breakdown & Model Matrix
140 DDI 353 00:
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140: Modicon Quantum platform family identifier
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DDI: DC Digital Input
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353: 32-channel high-density input variant
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00: Standard hardware revision index
Hardware Specifications
| Parameter |
Specification |
| ModelBrand |
Schneider Electric 140DDI35300 |
| Origin |
France (Schneider Electric manufacturing group) |
| Weight |
0.3 kg |
| PowerConsumption |
1.7 W + (0.36 x number of points on) |
| Input Channels |
32 discrete inputs |
| Input Voltage |
24 V DC |
| Voltage Range |
19.2 to 30 V DC |
| Logic Type |
Positive (sink) |
| Response Time |
<= 1 ms ON/OFF |
| Isolation |
1780 Vrms (bus to group, 1 minute) |
| Backplane Current |
330 mA |
| Grouping |
4-channel groups |
| LED Indication |
Per-point + bus + fault status |
Backplane Bus Communication & Quantum I/O Determinism
The Modicon Quantum backplane architecture implements cyclic I/O exchange through deterministic bus scanning with fixed slot-based addressing. The 140DDI35300 module maps 32 discrete channels into two input words with synchronized refresh aligned to rack backplane cycles. Firmware-level compatibility ensures stable integration across Quantum CPU scan intervals without external signal buffering. Channel scan timing is constrained by backplane arbitration and slot update sequencing rather than field-side signal propagation delays.
Frequently Asked Questions
Q1: Does the module support hot-swap insertion in a live Quantum rack?
A1: Hot-swap capability depends on system configuration; electrical backplane isolation is maintained, but insertion under energized field inputs may cause transient state changes on input words.
Q2: What limits the maximum backplane load of this module?
A2: Backplane consumption is specified at 330 mA, and total rack current must remain within Quantum chassis power budget to avoid bus undervoltage conditions.
Q3: What is the significance of the 1780 Vrms isolation rating?
A3: It defines galvanic separation between input groups and backplane circuitry, ensuring signal domain separation under industrial transient conditions.
Field Installation Guidelines
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Install module only in designated Modicon Quantum rack slots with correct backplane alignment.
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Ensure 24 V DC field wiring is isolated from backplane and control wiring harnesses.
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Maintain shield grounding at single-point earth reference to reduce induced noise on grouped channels.
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Avoid live insertion unless system architecture explicitly supports controlled hot-swapping.
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Verify channel grouping (4-channel blocks) during wiring to match PLC input mapping structure.
