Omron NX-DA3205 Analog I/O Unit NX Series

NX-DA3205 Omron Analog I/O Unit NX Series

NX-DA3205 Omron NX Series Analog I/O Unit

Omron NX-DA3205 NX Series Analog I/O Unit

Configured for high-speed current signal output in NX I/O Bus architectures, the Omron NX-DA3205 (NX-DA3205) Analog I/O Unit provides direct physical/electrical execution. It operates with a fast conversion rate of 0.04 ms per unit across 4 dedicated analog output channels. Utilizing Push-in Plus terminal connections, the module processes 4 to 20 mA linear output signals synchronously to ensure deterministic control timing without requiring analog inputs or specialized temperature sensing circuits.

Part Number Breakdown

• NX: Product series designation for Omron modular I/O system backplane.

• DA: Analog Output Unit classification.

• 3: 4-channel capacity per module interface.

• 2: 1/12000 high-resolution performance tier (15-bit representation).

• 05: Linear current range profile (4 to 20 mA range output).

Hardware Parameters

Deterministic Bus Performance

The module leverages synchronous signal processing over the NX I/O Bus to eliminate jitter during output signal updates. By coupling high-speed backplane bus communication velocity with a 0.04 ms update time per unit, output loops remain fully synchronized with EtherCAT master control cycles. Channel-to-channel signal propagation avoids timing skew, making the unit suitable for multi-axis or tight motion-servo feedback applications. Integrated firmware maintains output integrity and deterministic state execution during backplane refresh cycles.

Package & Ordering Content

• 1 x Omron NX-DA3205 Analog Output Unit

• 1 x Push-in Plus Terminal Block (16-pin integrated)

• 1 x Standard Hardware Installation Sheet

Mechanical Mounting & Wire Setup

• DIN Rail Fitting: Engage the top rear notch of the module onto a standard 35 mm DIN rail, then press firmly until the locking lever clicks into place.

• Push-in Wire Termination: Strip solid or ferruled stranded wires to 10 mm. Insert directly into the Push-in terminal holes without tools.

• Wire Extraction: Press the release button using a flat-blade screwdriver while pulling the wire out straight.

• Shielding & Grounding: Ground the shield wire at the ground terminal of the NX bus setup to prevent electromagnetic interference on the 4-20 mA loop.

• Wiring Separation: Route output signal wires away from high-voltage power lines and motor drive cables in a separate conduit.

FAQs

• Is the NX-DA3205 unit hot-swappable during active bus operation?

  No. You must turn off the power supply to the CPU unit, expansion unit, and the NX I/O bus before installing or removing the module to prevent electrical damage.

• What happens to the 4 to 20 mA outputs if backplane communication fails?

  Outputs transition to a pre-configured fail-safe state (either holding last value or dropping to 0 mA / lower limit) according to the CPU configuration settings.

• Does the module require an external power supply for loop current?

  Internal circuits run on NX bus power, but external 24 VDC power must be wired to the I/O power terminals to drive the 4 to 20 mA output loops.

• What is the total conversion time when all 4 channels are enabled?

  The conversion time remains 0.04 ms per unit due to simultaneous internal sampling and synchronous refresh execution across channels.

• What wire gauge sizes fit the Push-in Plus terminal block?

  The terminal block accepts solid or stranded cables with ferrules ranging from 0.25 mm2 to 1.5 mm2 (AWG 24 to 16).

• Can this unit handle voltage output signals like 0 to 10 VDC?

  No. The NX-DA3205 is strictly hardwired for linear current signals in the 4 to 20 mA range and cannot generate voltage outputs.

• How does synchronous I/O processing benefit the control system?

  It synchronizes analog output updates directly with the EtherCAT cycle time, eliminating timing variation between the controller and end devices.

• Does the NX-DA3205 provide channel-to-channel isolation?

  No. Isolation exists between the NX bus and the I/O signals, but individual channels share a common ground reference internally.