The Omron CQM1-PA216, also cataloged as the CQM1-PA216 Power Supply Unit, operates as a dedicated hardware component for internal system power distribution and voltage stabilization within Omron CQM1 PLC racks.

Model Nomenclature & System Architecture

• CQM1 Series Base: Standard CPU chassis mounting frame for CQM1 programmable logic controller assemblies.
• PA Line Type: Selectable AC voltage input supply section engineered for wide-range line power networks.
• 216 Capacity Index: Integrated dual-output topology delivering 5 VDC backplane logic power and auxiliary 24 VDC external service power.

Technical Performance Parameters

Deterministic Power Delivery and System Integration

The CQM1-PA216 supplies stable direct current to CPU and expansion racks, preventing backplane bus communication velocity degradation across high-density I/O configurations. Advanced firmware flash compatibility and power-fail detection circuits signal the CPU logic before backplane voltage falls below operating thresholds, ensuring deterministic state storage during utility supply outages.

Standard Delivery Contents

• 1 x Omron CQM1-PA216 Power Supply Module
• 1 x Protective Voltage Selector Jumper Guard

Hardware Installation Guidelines

• Voltage Selection Verification: Confirm the AC input selector switch or jumper matches the site source voltage (100 VAC or 230 VAC) prior to applying primary line power.
• Grounding Connection: Wire the GR terminal directly to an earth ground point with grounding resistance under 100 Ohm to maximize noise immunity.
• Thermal Convection Clearance: Maintain a minimum 20 mm vertical clearance above and below the module panel cutout to allow unimpeded ambient air dissipation.
• Terminal Wiring Safety: Strip AC power conductors to 6 mm and torque terminal screws firmly to prevent arching under continuous load conditions.

Frequently Asked Questions

• How is total output power allocated between 5 VDC and 24 VDC outputs?

  The combined load must not exceed 30 W, calculated as: (5 VDC Current x 5) + (24 VDC Current x 24) <= 30 W.

• Is hot-swapping supported for the CQM1-PA216 power supply unit?

  No, AC main input power must be completely disconnected before removing or installing the module on the PLC rack backplane.

• What inrush current level occurs when energizing the module?

  The primary power circuit experiences a maximum initial inrush current peak of 30 A during AC line energization.

• What noise suppression rating does the power unit provide?

  The internal filtering circuit withstands noise pulses up to 1,500 Vp-p with pulse widths from 100 ns to 1 us.

• How does ambient thermal exposure above +55 deg C affect module output?

  Operating past +55 deg C degrades internal switching components and triggers thermal protection shutdown circuits.

• What insulation test limit applies between line AC and ground terminals?

  Insulation resistance measures greater than 20 MOhm when tested at 500 VDC between AC power terminals and the GR earth ground.

• What happens if total load consumption exceeds the 30 W limit?

  Overcurrent protection limits output voltage, causing the CPU logic to reset or register a backplane low-voltage fault condition.

• Can external sensor networks be powered directly from the 24 VDC terminals?

  Yes, as long as total current draw from the 24 VDC terminal remains below 0.5 A and total module power stays within 30 W.