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Product Introduction
The Schneider Electric 140DRA84000C is a Relay Discrete Output Module designed for use with the Modicon Quantum series of programmable automation controllers (PACs). It offers 8 isolated relay output channels designed to switch AC or DC loads independently, making it ideal for applications requiring flexible discrete control and electrical isolation.
Relay-based output modules are especially beneficial in applications where load types vary (inductive or resistive), and when electrical isolation between field devices and control logic is crucial. This model supports voltage ratings of up to 250 V AC and 30 V DC, and is capable of driving solenoids, contactors, signal lamps, and similar output devices.
Integrated with Modicon Quantum backplanes, the 140DRA84000C ensures plug-and-play compatibility, centralized diagnostics, and rugged reliability for industrial-grade discrete control environments.
Product Specifications
| Parameter | Description |
|---|---|
| Product Name | Relay Discrete Output Module |
| Part Number | 140DRA84000C |
| Manufacturer | Schneider Electric |
| Platform | Modicon Quantum |
| Number of Channels | 8 isolated relay output channels |
| Output Type | Form C (SPDT) mechanical relay contacts |
| Rated Output Voltage | 5–250 V AC, 5–30 V DC |
| Maximum Output Current | 2 A per channel |
| Switching Capability | 60 W DC / 250 VA AC |
| Isolation | Channel-to-channel and channel-to-backplane isolation |
| Relay Type | Electromechanical SPDT relays |
| Response Time | 10 ms max (relay actuation) |
| Contact Life | 100,000 operations minimum under full load |
| Backplane Power Supply | Supplied via Quantum rack (5 V) |
| Power Consumption | Approx. 3.0 W |
| LED Indicators | One per output channel (ON/OFF status) |
| Operating Temperature | 0°C to +60°C |
| Storage Temperature | -40°C to +85°C |
| Humidity | 5% to 95% RH (non-condensing) |
| Dimensions | 103.9 × 40.3 × 250 mm |
| Weight | 0.41 kg |
| Certifications | CE, UL, CSA, RoHS compliant |
Applications
The Schneider 140DRA84000C is used in industries requiring high-voltage or AC load control, where discrete on/off signals must be reliably managed. Common applications include:
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Industrial Machinery Control: Operating solenoids, contactors, relays, and motors.
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Building Automation: Lighting systems, HVAC relay switching, and fan control.
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Energy Management Systems: Managing signal lamps, fault indicators, and alarm buzzers.
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Water Treatment Facilities: Pump start/stop relays and valve actuation.
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Manufacturing Plants: Machinery status signaling, warning lights, and interlocks.
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Power Plants: Switching high-voltage discrete alarms or turbine auxiliary systems.
Product Advantages
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Universal Load Compatibility: Relay outputs can switch both AC and DC voltages, including inductive and resistive loads.
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High Isolation Protection: Each channel is electrically isolated from others and the control bus for increased system robustness.
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Mechanical Reliability: Durable electromechanical contacts rated for 100k+ operations under full load.
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Flexible Wiring: SPDT configuration allows for NO/NC output wiring per channel.
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Compact Footprint: 8 outputs in a single-slot Quantum format saves rack space.
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Field Diagnostics: LED indicators per channel simplify troubleshooting and real-time monitoring.
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Standardized Integration: Seamless use with Schneider’s EcoStruxure Control Expert or Unity Pro for configuration.
Frequently Asked Questions (FAQ)
1. What types of loads can I control with the 140DRA84000C?
You can control a wide range of loads including indicator lights, relays, small motors, contactors, and alarms, both AC and DC.
2. Are the output relays mechanical or solid-state?
The module uses mechanical SPDT relays (Form C) for each output channel.
3. Can I use both NO and NC contacts on the same channel?
Yes, each output provides both Normally Open (NO) and Normally Closed (NC) contacts via SPDT configuration.
4. How much current can each relay handle?
Each relay can switch up to 2 A at 250 V AC or 30 V DC, depending on the load type.
5. Are the channels isolated from one another?
Yes, the channels are isolated from each other and from the backplane, ensuring safe and independent operation.
6. How do I diagnose a faulty relay channel?
Use the per-channel LED indicators and system diagnostics in Control Expert to identify relay actuation failures.
7. Can I hot-swap the module in a running system?
Yes, it supports hot-swapping in the Quantum backplane when designed into the system with appropriate redundancy.
8. How long do the relay contacts typically last?
Relay contact life exceeds 100,000 operations at rated load, and significantly more under light-duty operation.
9. Does this module require any special wiring?
Standard discrete output wiring is used. Ensure correct load type and current limits to maximize relay life.
10. What software is used to configure this module?
Schneider’s Unity Pro or EcoStruxure Control Expert is used to configure I/O mapping, diagnostics, and logic handling.
Related or Same-Series Models
| Model Number | Description | Type | Compatibility |
|---|---|---|---|
| 140DIO33000C | IS Discrete Output Module (8-channel) | Intrinsically Safe DO | Modicon Quantum |
| 140DDO35300 | 32-channel Solid-State Output Module | Discrete Output (24V DC) | Modicon Quantum |
| 140DAO85300 | Analog Output Module | 8-channel AO (current) | Modicon Quantum |
| 140DDI84100 | Digital Input Module | 16-channel DI (125V DC) | Modicon Quantum |
| 140DII33000C | IS Analog Input Module | Intrinsically Safe AI | Modicon Quantum |
| 140CPU65160S | Quantum CPU Module | Controller | All Quantum I/O |
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