Application Example: Relio R4 1U Industrial Computer with 2 SeaRAQ I/O Expansion Modules

Application Example: Relio R3 3U Industrial Computer with 18 SeaRAQ I/O Expansion Modules

SeaRAQ 16 Isolated Form A Relay Outputs

Part: 8520 Model: SeaRAQ-8520

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Description

SeaRAQ™ I/O expansion modules provide unprecedented expansion capabilities for Sealevel Relio R3 and Relio R4 industrial computers. The SeaRAQ 8520 expansion board adds 16 isolated relay outputs rated for 5-250 VAC and 5-30 VDC. The Form A relays are organized into four banks of four relays, with each bank sharing a common. The relays support a maximum current load of 2A per relay (4A maximum per bank). The SPST relays are normally open and close when energized.

To protect the host computer from harmful voltage spikes commonly found in industrial environments, the 8520 provides 1500 VAC isolation. For easy, reliable field wiring, the board uses removable, high-retention terminal block connectors.

Sealevel’s SeaMAX software drivers and utilities make installation and operation easy using Microsoft Windows and Linux operating systems. Communicate using industry-standard Modbus RTU protocol or use the Sealevel SeaMAX API software libraries from your application program.

Get a jump start on your digital I/O development with The Digital I/O Handbook that will provide helpful information that you will use again and again. Check out Chapter 1 for an overview of logic principles.

Category: SeaRAQ I/O

Additional information

Family	SeaRAQ
Contact Current	2 A Pilot Duty Maximum (per Output)4 A Maximum, Resistive (per Group)
Contact Voltage	5-250 VAC (50/60 Hz)5-30 VDC
Digital I/O	Form A Relay Outputs
Dimensions	PCB is 6.00" (L) x 4.35" (W)
Extended Temperature	Call for Options
Field Wiring	16 – 30 AWG
Humidity Range	10 – 90% Relative Humidity, Non-Condensing
Modbus	Modbus RTU
Number of Inputs/Outputs	16 Isolated Outputs
Operating Temperature	0°C to 70°C (32°F to 158°F)
Output Isolation	1500 VAC RMS (Field-to-Logic)
Plate Connectors	High-Retention, Removable Terminal Blocks
RoHS Compliant	Yes
Storage Temperature	-50°C to 105°C (-58°F to 221°F)

Digital expansion module with 16 Form A relay outputs, rated for 5-250 VAC and 5-30 VDC loads
Relays are organized in four banks of four (4) relays, with each bank sharing a common
Relays support a maximum current load of 2A per relay (4A maximum per bank)
1500 VAC field-to-logic isolation
Industry standard Modbus RTU interface
Input power provided via backplane connector
Field wiring is simplified via removable 3.5mm terminal blocks compatible with 16-30 AWG wire
Includes 20-position, removable, high-retention Phoenix terminal blocks
Sealevel SeaMAX software supports Microsoft Windows and Linux operating systems