Configured for direct regulation and conversion of AC line power to regulated DC backplane voltages in SYSMAC C200HX/HG/HE racks, the Omron C200HW-PA204C (C200HW-PA204C Power Supply Unit) provides direct physical/electrical execution. It converts 100 to 240 VAC wide-range input into 5 VDC and 26 VDC rails to power rack-mounted CPUs, I/O modules, and special function units. The internal monitoring system delivers real-time power supply degradation detection via an onboard 7-segment display and discrete transistor output prior to output voltage collapse.

Technical Identifier Matrix

• Base Model: C200HW-PA204C

• Brand: Omron

• Series: SYSMAC C200HX/C200HG/C200HE

• Hardware Profile: Power Supply Unit with Maintenance Forecast Monitor

• Primary Function: System Backplane Bus Power Generation & Diagnostic Monitoring

Hardware Specifications

Backplane Bus Velocity and Power Density Scaling

The Omron C200HW-PA204C provides regulated logic current across the SYSMAC backplane bus, enabling full processing velocity and signal determinism across expanded CPU and I/O rack backplanes. Modern high-density I/O arrays require consistent power delivery to maintain digital bus switching speeds without voltage droop. The power module conditions incoming AC mains to suppress line noise and ripple, maintaining strict voltage thresholds on the 5 VDC rail (up to 4.6 A) for digital logic processors and the 26 VDC rail (up to 0.6 A) for internal relay and analog subsystem biasing. Firmware flash stability and backplane bus synchronization are preserved by triggering an orderly system shutdown when input voltage drops below the 85 VAC detection threshold.

Package Contents & Ordering Information

• 1x Omron C200HW-PA204C Power Supply Unit

• 1x Removable Protective Terminal Cover

• 1x Field Installation Sheet

Field Installation Guidelines

• Mounting: Secure the module into the designated far-left power supply slot on the SYSMAC C200HX/HG/HE CPU rack or Expansion I/O rack. Tighten top and bottom retaining screws to 0.8 N-m.

• Wiring: Connect 100 to 240 VAC power source lines to the AC input terminals using 1.25 mm sq to 2.0 mm sq wire. Do not run line power cables parallel to low-voltage I/O signal lines.

• Grounding: Terminate the functional ground (FG) and protective earth (PE) terminals directly to a central enclosure ground bar using 2.0 mm sq wire. Ensure ground impedance remains under 100 ohms.

• Shielding: Install 360-deg braid-shielded grounding clamps around field signal cables entering adjacent rack modules to prevent electro-magnetic interference from coupling into the power supply circuitry.

Frequently Asked Questions

• What is the function of the maintenance forecast monitor on the C200HW-PA204C?

  It monitors internal electrolytic capacitor degradation and displays remaining service life via a 7-segment display and transistor output signal.

• What are the maximum current capacities for the 5 VDC and 26 VDC outputs?

  The 5 VDC rail supplies up to 4.6 A (23 W) and the 26 VDC rail supplies up to 0.6 A (15.6 W), capped at 30 W total output power.

• Does the Omron C200HW-PA204C supply a 24 VDC service output?

  No, this specific model does not feature an auxiliary 24 VDC service power output terminal block.

• At what line voltage level does power interruption detection trigger?

  The module detects power interruption when the input voltage drops to 85 VAC or below, signaling the CPU for controlled shutdown.

• Can this power supply unit be hot-swapped while the rack is operational?

  No, AC mains power must be disconnected before removing or installing the power supply module to prevent backplane bus damage.

• Is a RUN contact output available on the front terminal block?

  No, the C200HW-PA204C model does not incorporate a dedicated dry-contact RUN output relay.

• What wire gauge should be used for the AC mains input terminals?

  Use stranded copper wires with cross-sectional areas between 1.25 mm sq and 2.0 mm sq rated for at least 75 deg C.

• How is the maintenance forecast warning output externally wired?

  The onboard transistor output can be wired to a PLC input or external indicator light operating within specified DC load limits.