Configured for precise analog current loop signal generation in EtherNet/IP deterministic networks, the Omron NX-DA2203 (NX-DA2203 Analog Output Unit) provides direct physical/electrical execution across NX Series backplane systems.

Part Number Nomenclature & Designators

• NX: Slice-type modular remote I/O platform identifier.
• DA: Analog output function category.
• 2: Two-channel analog output density configuration.
• 203: Current output functional specification variant (4 to 20 mA range).

Technical Performance Parameters

Backplane Communication Velocity & I/O Scaling Architecture

The module receives cyclic output data updates across the local NX bus interface. High backplane bus communication velocity enables rapid output updates synchronized with host PLC execution cycles. Firmware flash compatibility ensures seamless integration during system expansions, maintaining uniform output timing during high-density I/O density scaling across extended fieldbus topologies.

Items Supplied in Box

• 1 x Omron NX-DA2203 Analog Output Unit
• 1 x Screwless Terminal Block Assembly
• 1 x Side Connector Shield Cap
• 1 x Standard Technical Instruction Manual

Field Wiring & Mechanical Mounting Recommendations

• DIN Rail Assembly: Hook the upper latch of the NX-DA2203 onto the 35 mm DIN rail, then swing the lower unit body downward until the backplane locking mechanism clicks securely into place.
• Terminal Wiring Setup: Connect field actuators to the screwless terminal block using ferruled stranded copper wire (AWG 24 to AWG 16) pressed directly into the clamping terminals.
• Cable Shield Grounding: Connect two-wire current loop shielded cables to the designated ground bus to prevent electromagnetic noise interference on field signal lines.
• Bus Power Distribution: Verify total current draw on the internal NX power bus does not exceed system power unit limits when feeding I/O power directly through the backplane.

Frequently Asked Questions

• What is the maximum external load resistance supported by each analog current output channel?

  Each channel supports an allowable load resistance up to 600 ohm max under standard operating voltage conditions.

• How is internal logic and field output power supplied to the NX-DA2203 module?

  All internal operating and output field power is derived directly via supply from the NX bus backplane rail.

• Does the module support hot-swapping while the NX bus remains powered?

  No, replacing the unit under live power disrupts backplane bus communication and requires de-energizing the local segment power.

• What digital conversion rate does the module achieve for each output point?

  The conversion time is 250 us/point for processing internal digital register data into continuous field currents.

• What insulation resistance level is maintained across isolated circuit boundaries?

  The module provides an insulation resistance rating of 20 Mohm min measured between isolated circuits at 100 VDC.

• Can voltage output signals be generated directly from the terminal block of this unit?

  No, the unit is engineered strictly as a current output type module operating within standard milliamp ranges.

• What steps prevent backplane communication errors during module insertion?

  Ensure side guide pins line up precisely with adjacent modules to avoid bending backplane bus pin contacts.

• How does the unit react when controller output data updates cease during a network disconnect?

  Channels transition to configured fallback states, holding last valid current output or clearing to zero based on software settings.