SeaI/O Ethernet Adapters  •  Ethernet
520E Ethernet Relay Output Adapter
520E - Ethernet Modbus TCP to 8 Isolated Digital Input/8 High Current Form C Relay Output Adapter (SeaI/O-520E)
CE is a mandatory standard for products on the market in the European Economic Area. By CE marking a product, the manufacturer ensures that the item meets the essential safety requirements set out in the applicable CE directive.
This product fully adheres to the Restriction of Hazardous Substances Directive 2002/95/EC, RoHS for short.  The directive covers the restriction of use of certain hazardous substances in electrical and electronic equipment and was adopted in February 2003 by the European Union.
This product has a lifetime warranty against product failure (excludes user or enviromental damage).
The Federal Communications Commission (FCC) is an independent agency of the United States government that sets standards and governs the testing of conducted and radiated emissions such as EMI.

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Ethernet Modbus TCP to 8 Isolated Digital Input/8 High Current Form C Relay Output Adapter
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Peripheral information
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All prices exclude VAT at current rate.
Minimum order value - £50 (exc. VAT and delivery).
Free delivery of the 520E to UK Mainland on orders over £150 (exc. VAT and delivery) when purchasing online - excludes Northern Ireland, Isle of Man, Isle of Wight, Scottish Islands and the Channel Islands.

* Lead time is indicative and is subject to change at time of ordering. Next business day delivery on in-stock products only (when ordered before 3pm).
** Contact us for quantity or project pricing.
† Additional delivery charge may be incurred for certain postcodes (calculated at checkout)

520E overview

  • Manufacturer : Sealevel Systems
  • Interface : 10/100Base-T Ethernet Modbus TCP
  • Total Channels : 16
  • Inputs : 8 x Optically Isolated Digital Inputs
  • Input Range : 5-30V DC
  • Input Isolation : 300V
  • Outputs : 8 x High Current Form C Relay (SPDT) Outputs
  • Max. Contact Voltage : 60V DC, 250V AC max.
  • Max. Contact Current (AC) : 6A max. 
  • Max. Contact Current (DC) : <30V DC @ 5A max., >30V DC @ 500mA max.
  • Switching Capacity : 5V DC @ 100mA min.
  • Enclosure : Housed in rugged, attractive steel enclosure
  • I/O Connector : 4-bit segments that each share a common for easy wiring via removable 3.5mm terminal blocks
  • Accessories : 1 x 7’ straight through Ethernet cable (CA246), for connection to a network hub or switch (BLUE), 1 x 7’ crossover cable (CA251), for direct connection to a host computer’s Ethernet port (YELLOW)
  • Other Features : Input power via terminal block or modular connector
  • DIN rail or table mount
  • Dimensions (WxHxD) : 7.5" x 1.3" x 5.1" 
  • Power Requirement : 9-30V DC @ 5.0W (TR108 24V DC PSU available)
  • Operating Temperature : 0 to +70C (extended temperature options available)
  • Software Support : SeaMAX supports Linux, Windows 2000, XP, Vista and Windows 7 
  • Warranty : Lifetime Warranty
The Sea/O-520E provides eight optically isolated inputs and eight high-current Form C relay outputs. Inputs can range from 5V-30V DC and optical isolation protects the computer and other sensitive equipment from voltage transients and ground loops that are common in industrial environments.

The high-current Form C relays can switch up to 6A loads at 250V AC and up to 5A at 60V DC. Form C relays can be wired for either normally open or normally closed operation.

The SeaI/O-520E is powered from your 9-30V DC source, or select from a variety of Sealevel power supply options.

Communicate with the SeaI/O-520E using industry standard Modbus TCP protocol or use the Sealevel SeaMAX API software libraries from your application program. Sealevel's SeaMAX software drivers and utilities make installation and operation easy using Windows and Linux operating systems.

Expand your I/O network with SeaI/O "N" series products. SeaI/O modules are available with Reed and Form C relays, optically isolated inputs, TTL interfaces, A/D and D/A functionality. Up to 246 additional expansion modules can be added using convenient pass-through connectors.

Impulse is a leading UK distributor of Sealevel products and can supply you the 520E along with a wide range of industrial computing and communication products.

For more information about the 520E, please contact our technical sales team on +44 (0)1782 337 800, or alternatively submit an enquiry.
OPC-UA is supported by many of our communication and I/O products. If you are interested but not quite sure how to implement OPC-UA into your factory then get in touch.
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Need more info or project pricing for the 520E?
T: +44 (0)1782 337 800 • E: SALES@IMPULSE-EMBEDDED.CO.UK
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