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The SeaI/O-520E provides 8 optically isolated inputs and 8 high-current Form C relay outputs. Designed for industrial automation, it supports Modbus TCP communication and is ideal for controlling high-power devices with remote I/O capability..
The SeaI/O-520E is an advanced Ethernet-based I/O module designed for controlling high-current devices. It provides 8 optically isolated inputs, each rated for 5-30VDC, with 300V external isolation to protect sensitive equipment from electrical noise and transients. These inputs are perfect for use in industrial environments where voltage fluctuations are common.
In addition, the module features 8 high-current Form C relays, capable of switching 6A loads at 250VAC and 5A at 30VDC, making it suitable for controlling large industrial devices, such as motors, valves, and actuators. The relays can be configured as normally open or normally closed, depending on your control needs.
Communication with the SeaI/O-520E is achieved via Modbus TCP over Ethernet, allowing for easy remote control and monitoring from any networked device. The module is powered by 9–30VDC, and it includes removable screw terminals for easy field wiring.
For easier system expansion, the SeaI/O-520E supports up to 246 additional SeaI/O N-series modules, giving you the flexibility to scale your I/O network. For mobile access, Sealevel Modbus Connect for iOS lets you remotely monitor and troubleshoot the system in the field.
8 Optically Isolated Inputs – Rated for 5-30VDC, offering 300V external isolation for protection against voltage transients and ground loops
8 High-Current Form C Relays – Switch up to 6A loads at 250VAC and 5A at 30VDC
Modbus TCP Communication – Over Ethernet (10/100BaseT) for seamless integration with SCADA systems
Flexible Relay Configuration – Relays can be wired for normally open or normally closed operation
SeaMAX API Support – Compatible with Windows and Linux for easy software integration
Power Input – Operates on 9–30VDC with available Sealevel power supply options
Expansion Capability – Supports up to 246 additional SeaI/O N-series modules
iOS App Ready – Sealevel Modbus Connect for remote testing and monitoring
Enclosure Design – Durable and rugged, ideal for industrial environments
| Parameter | Details |
|---|---|
| Model Number | 520E-ROHS |
| Form Factor | Enclosure |
| Host Interface | Ethernet (10/100BaseT) |
| Communication Protocol | Modbus TCP |
| Number of Inputs | 8 |
| Input Type | Optically Isolated Inputs |
| Number of Outputs | 8 |
| Output Type | Form C Relays (6A @ 250VAC / 5A @ 30VDC) |
| Power Requirement | 9–30 VDC @ 5.0W |
| Expansion Capability | Supports up to 246 SeaI/O N-Series Modules |
| Software Compatibility | SeaMAX API (Windows/Linux), Modbus TCP |
| iOS App Support | Sealevel Modbus Connect App |
| Operating Temperature | 0°C to 70°C (32°F to 158°F) |
| Storage Temperature | -50°C to 105°C (-58°F to 221°F) |
| Humidity | 10–90% RH, Non-Condensing |
| Dimensions (inches) | 7.5" (L) x 5.1" (W) x 1.3" (H) |