Digital I/O module

ModbusEthernetRS-485

Product description
The EAs modules are designed for building automation, industrial automation and infrastructure applications. Available in 4, 8 or 12 TE depending on IO count, these I/O modules fit standard 45 mm cutout enclosures and in standard control cabinets.

Two interface variants are provided for each EAs module: one with onboard RS485 (MODBUS/RTU Slave) and one with Ethernet (MODBUS/TCP). All modules also support a simple ASCII protocol for integration with media control systems or IoT controllers (e.g. Node-RED, NodeJs, Python). Ethernet versions support MODBUS/RTU over Ethernet in addition to MODBUS/TCP. All modules include a wide-range power supply 12–48 VDC.

Configuration
Use the free RESIConfigurator software to configure and test EAs modules. Each product is delivered with a complete ASCII command list and a MODBUS register map with detailed explanations.

Product variants / configurations

• Interfaces (EAs interfaces)
  • RS485: ASCII + MODBUS/RTU Slave protocol
  • Ethernet: ASCII + MODBUS/TCP server protocol
• EAs-DEs + Relays (Examples of selectable configurations)
  • 10xRE (≤250Vac/dc) + 8xRelays (≤30Vdc, ≤250Vac, ≤6A)
  • 20xRE (≤250Vac/dc) + 16xRelays (≤30Vdc, ≤250Vac, ≤6A)
  • 32xDE (≤48Vdc) + 12xRelays (≤30Vdc, ≤250Vac, ≤6A)
  • 32xDE (≤48Vdc) + 24xRelays (≤30Vdc, ≤250Vac, ≤6A)
  • 44xDE (≤48Vdc) + 12xDA (≤30Vdc, ≤700mA) + 24xRelays (≤30Vdc, ≤250Vac, ≤6A)
  • 16xDE (≤48Vdc) + 8xPower relays (Form A, ≤30Vdc, ≤250Vdc, ≤16A, ≤220µF)
  • 7xRE (≤250Vac/dc) + 5xSolid State Relays (≤250Vac/dc, ≤1A)
  • 7xRE (≤250Vac/dc) + 5xSolid State Relays (≤60Vac/dc, ≤3A)
  • 7xRE (≤250Vac/dc) + 5xSolid State Relays (≤60Vac/dc, ≤6A)
  • 14xRE (≤250Vac/dc) + 10xSolid State Relays (≤250Vac/dc, ≤1A)
  • 14xRE (≤250Vac/dc) + 10xSolid State Relays (≤60Vac/dc, ≤3A)
  • 14xRE (≤250Vac/dc) + 10xSolid State Relays (≤60Vac/dc, ≤6A)

Functional notes

• Digital inputs: types for DC signals up to 48 Vdc and for AC/DC signals between 12 and 250 V (AC/DC).
• Relays: versions with maximum switching currents of 6 A or 8 A; dedicated power relays for capacitive loads (up to 16 A, ≤220 µF).
• Contact material of mechanical relays: AgSnO2.
• Relay contacts: some modules with common supply, changeover relays (Form C) or normally closed/normally open variants (Form A).
• Solid state relays (Form A) available, e.g. 250 Vac/dc ≤ 1 A or 60 Vac/dc ≤ 3 A / ≤ 6 A.

Characteristics / Technical specifications

• Series: EAs
• Article no. (example reference on page): RESI-10RI8RO-SIO
• Enclosure sizes: 4 TE, 8 TE, 12 TE (depending on IO count)
• Mounting cutout: for standard 45 mm control cabinet cutout
• Power supply: 12–48 VDC (wide-range)
• Interfaces: RS485 (MODBUS/RTU Slave), Ethernet (MODBUS/TCP)
• Protocols: MODBUS/RTU, MODBUS/TCP, ASCII protocol
• Digital inputs: DC up to 48 Vdc; AC/DC 12–250 V
• Relay mechanics: 6 A / 8 A variants; power relays Form A up to 16 A (up to 220 µF)
• Contact material: AgSnO2
• Options: Solid State Relays in various voltage/current ratings