Omron CQM1-PA206 (CQM1PA206) Power Supply Unit CQM1-PA206 CQM1PA206 CQM1-PA2O6

CQM1-PA206 | Omron CQM1 Power Supply Unit — 100–240VAC / 5VDC 6A / 24VDC 0.5A / 30W / IEC61000-4-4 / 0–55°C / 0.57kg

The CQM1 Power Supply — Feeding the Whole System

The CQM1-PA206 is the power supply unit that sits at the left end of the CQM1 PLC system. Every module in the CQM1 rack — CPU, I/O expansion modules, and communication units — draws its logic supply voltage through the system bus from this unit.

The power supply converts the AC mains supply to two regulated DC outputs. The 5VDC output at 6A carries the CQM1's system bus logic power — all digital signal processing, programme execution, and module communication run on this rail. The 24VDC output at 0.5A provides auxiliary DC power for field use or internal system requirements within the CQM1 rack.

Key Specifications

Vibration and Shock Resistance — Industrial-Grade Physical Durability

The CQM1-PA206 is designed for industrial panel mounting, where vibration from nearby machinery, footfall on machine decks, and shock from mechanical press or stamping operations are normal environmental conditions:

Vibration: Rated to withstand 0.075mm amplitude at frequencies between 10 and 57Hz, and 9.8 m/s² (≈1g) acceleration at 57–150Hz. This covers typical factory floor vibration from rotating machinery, conveyor drives, and pneumatic systems.

Shock: Rated to 147 m/s² (approximately 15g) in all three axes — X, Y, and Z. This provides margin against the mechanical transients from contactor closing, solenoid actuation, and assembly line impact events that transmit through the panel enclosure.

Application Scenarios

CQM1 system power supply replacement: A CQM1 system in a packaging machine exhibits erratic CPU operation and random module communication errors. Testing isolates the power supply as the source of marginal 5VDC output voltage. Replacing the CQM1-PA206 restores stable 5VDC to the system bus, and all error symptoms clear.

New CQM1 system build: An OEM machine builder specifies a CQM1 system for a new inspection station. The CQM1-PA206 provides the system power for a CQM1H CPU and up to 11 I/O expansion modules from any standard 85–264V AC supply at the installation site.

FAQ

Q1: What CQM1 CPU units is the CQM1-PA206 compatible with?

The CQM1-PA206 is compatible with all CQM1 and CQM1H CPU units. The power supply connects to the CPU unit via the left-side bus connector — no electrical configuration is needed. The total power available (30W at 5VDC + 24VDC combined) determines how many I/O expansion modules the system supports; this depends on the current draw of each installed module.

Q2: How many I/O expansion modules can the CQM1-PA206 power?

Total expansion module count is limited by both the CPU's maximum module count and the power supply's total output capacity. The 5VDC output provides up to 6A. Each CQM1 I/O expansion module draws between 40mA and 170mA from the 5VDC bus, depending on the module type. For typical mixed I/O configurations, 6A at 5VDC supports 7 to 10 expansion modules. Calculate the total backplane current draw for the planned configuration and confirm it stays within the 6A limit.

Q3: What does the IEC61000-4-4 noise immunity rating cover?

IEC61000-4-4 is the standard for Electrical Fast Transient (EFT) immunity — rapid voltage burst events on the power supply input caused by switching transients from contactors, relays, and other inductive devices switching on the same power distribution circuit. The CQM1-PA206's compliance with this standard means it continues to operate correctly through the transient events typical of an industrial panel environment without tripping, resetting, or corrupting logic supply output.

Q4: Is the 24VDC output on the CQM1-PA206 suitable for powering field sensors?

The 24VDC output provides 0.5A — 12W at 24V. This is adequate for powering a small number of 24VDC sensors or a handful of indicator lamps connected directly to the CQM1 system. For applications requiring more than 0.5A at 24VDC for field devices, an external dedicated 24VDC power supply is required. Do not overload the CQM1-PA206's 24VDC output beyond 0.5A.

Q5: What is the dielectric strength test voltage for the CQM1-PA206, and what does it verify?

The dielectric strength (hi-pot) test applies 2,300 VAC between the AC input terminals and the protective earth (GR) terminal. This verifies that the mains-to-safety-earth insulation can withstand over-voltage transients without breaking down. The 1,000 VAC figure applies between the DC output terminals and GR. These values confirm the power supply maintains safe isolation between mains-voltage circuits and the low-voltage DC output circuits and earth connections.