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Schneider 140DRA84000 Relay Output Module
Schneider 140DRA84000
The 140DRA84000 is a Quantum relay output module in Schneider Electric’s 140 series, specifically designed for industrial automation systems requiring high-reliability discrete control. Featuring a modular structure, the module can be directly inserted into the rack or base of 140 series PLCs, enabling rapid assembly and replacement.
Key Technical Specifications
- Output Type: Relay (Normally Open/NO)
- Number of Channels: 16 points
- Rated Current: 2 A per channel (4 A per channel model available as an option)
- Rated Voltage: 24 V DC (compatible with 24-230 V AC)
- Response Time: ≤ 5 ms (typical)
- Operating Temperature: -25 °C to +70 °C
- Protection Class: IP20 (for cabinet-mounted use)
- Communication Interface: Compatible with 140 series PLC backplane bus (Ethernet/IP, Modbus TCP, etc.)
Product Features
- High Reliability: Adopts a double-layer metal contact structure, resistant to shock and vibration, with a service life of over 1 million operations.
- Modular Design: Plug-and-play functionality with hot-swap support, facilitating on-site maintenance and system expansion.
- Multi-Voltage Compatibility: Operates within 24 V DC and 24-230 V AC voltage ranges to meet diverse on-site requirements.
- Compact Size: Complies with 140 series standard dimensions, saving rack space.
- Diagnostic Capabilities: Built-in short-circuit and overload detection, capable of feeding back fault status via PLC for predictive maintenance.
Structure and Composition
- Housing: Metal casing providing mechanical protection.
- Relay Contact Units: 16 groups of independent contacts, each including a Normally Open (NO) contact.
- Power Distribution Board: Distributes power supplied by PLC to each channel.
- Communication/Diagnostic Interface: Connects to PLC backplane bus for status upload.
- Mounting Clips: Secures the module to the rack or base.
Typical Application Areas
- Process Control: Switch control of discrete devices such as valves, pumps, and heaters.
- Machine Safety: Emergency stop circuits and access control signal output.
- Energy Management: Control of power distribution cabinets and relay protection devices.
- Building Automation: Discrete control of lighting, air conditioning, and ventilation systems.
- Transportation Facilities: Control of public facilities such as traffic lights and gates.
Installation and Maintenance Guidelines
Installation
Align the module with the backplane slot of the 140 series PLC and push gently to lock in place; ensure correct connection of power and signal wires to corresponding terminals.
Wiring
Output terminals use screw compression connections; it is recommended to use wire specifications compliant with IEC 60204 standards. Input terminals connect directly to PLC ports.
Commissioning
Use PLC programming software (e.g., Unity Pro) for channel mapping and status monitoring to verify the on/off operation of each relay.
Maintenance
The module supports hot-swapping for direct replacement in case of failure. Regularly inspect contact resistance and terminal tightness to prevent malfunctions caused by loose connections.
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