PHOENIX CONTACT QUINT-PS/1AC/24DC/10/CO 2320911 DIN Rail Power Supply

QUINT-PS/1AC/24DC/10/CO 2320911 — Stop the Clock on Your Downtime

Your line is stopped. Every minute costs money. The PHOENIX CONTACT QUINT-PS/1AC/24DC/10/CO (Part No. 2320911) is on our shelf in Xiamen right now — not on a 12-week lead time, not on backorder. We ship DHL Express within 24 hours of payment confirmation. If your control panel is dark because this PSU failed, this page is the fastest path back to production.

This is a 240 W, 24 VDC / 10 A single-phase DIN rail power supply from PHOENIX CONTACT’s QUINT Power series — the benchmark for industrial 24 V bus supplies. It is not a generic replacement. It is the exact OEM part, original packaging, with full traceability.

URGENT REQUIREMENT? Contact: [email protected] | WhatsApp: +86 18359268345

Quick Technical Datasheet

Troubleshooting & Replacement Tips

Ten years of field calls on QUINT PSU failures come down to a short list of root causes. Before you pull the unit, rule these out:

Symptom: Output voltage present but drops under load (below 22 V)
Most common cause is capacitor aging on the output filter stage — the unit is past its service life. Confirm with a clamp meter at rated load. If voltage sags more than 1 V under 8 A draw, replace immediately. Do not attempt to adjust the output trim pot above 25 V to compensate — you will mask the fault and risk downstream PLC I/O damage.

Symptom: CO relay contact open, PLC alarm active, but output voltage reads normal
The /CO variant monitors internal thermal and voltage thresholds independently of the output terminal. A tripped CO relay with normal output voltage usually means the unit is running hot — check enclosure ventilation and ambient temperature. Verify the 45 mm clearance above and below the unit on the DIN rail. If the enclosure is above 40 °C ambient, derate the output to 8 A or add forced-air cooling.

Symptom: SFB boost not tripping downstream MCB
The SFB function delivers 200% current for 5 seconds. If your branch MCB is a D-curve or has a high magnetic trip threshold, it may not trip within the SFB window. Switch to a C-curve MCB rated at ≤ 4 A per branch. PHOENIX CONTACT recommends Siemens 5SY or equivalent C-characteristic breakers for this supply.

Replacement procedure — zero-surprise swap:

• De-energize the panel. Lock out / tag out. Verify zero voltage on input terminals with a calibrated meter — do not trust the panel main switch alone.
• Photograph the existing wiring before disconnecting. The /CO variant has three terminal groups: AC input (L, N, PE), DC output (+, −), and the CO relay (11, 12, 14). Mislabeling the CO relay terminals is the most common commissioning error on replacement.
• Loosen the DIN rail latch at the bottom of the unit. Slide the unit off the rail — do not pry from the top.
• Transfer wiring to the new unit terminal by terminal, referencing your photograph. Torque input terminals to 0.5–0.6 Nm; output terminals to 0.5 Nm. Under-torqued terminals are the leading cause of premature failure on replacement units.
• After energizing, verify output voltage at the terminal strip — not at the load. Adjust the trim pot if necessary to match your bus voltage (typically 24.0–24.5 V). Check CO relay state at your PLC input — it should be in the normal (closed NC) state within 2 seconds of power-up.
• Run the panel at full load for 15 minutes and re-check output voltage and enclosure temperature before closing the door.

Firmware / configuration note: This is a hardware power supply — no firmware, no DIP switches, no address configuration required. The only field adjustment is the output voltage trim pot (accessible through the front panel). If you are replacing a unit in a redundant pair using the QUINT-DIODE OR-ing module, verify that both PSU output voltages are within 0.2 V of each other before closing the circuit — a large differential will cause one unit to carry the full load.

Reliability in Harsh Conditions

The QUINT Power series was not designed for clean server rooms. It was designed for the kind of environments where panels vibrate, ambient temperatures swing 50 °C between seasons, and humidity condenses on cold mornings. The 2320911 carries an operating range of −25 °C to +70 °C — that covers outdoor enclosures in northern climates and machine cabinets mounted directly on hot process equipment.

The wide-range AC input (85–264 VAC) means this unit survives the voltage sags and surges common in heavy industrial facilities without nuisance tripping. Internal surge suppression handles transients up to the levels specified in IEC 61000-4-5 (2 kV line-to-earth). The conformal-coated PCB resists condensation and airborne contaminants — relevant in food processing, chemical, and coastal installations where humidity is a constant threat.

Vibration resistance meets IEC 60068-2-6 (sinusoidal, 5–150 Hz, 2 g). Shock resistance meets IEC 60068-2-27 (25 g, 11 ms). These are not marketing numbers — they are the reason this supply is specified in railway rolling stock (EN 50155) and marine panels (GL approval). If your application involves a machine that moves, shakes, or operates near heavy press equipment, the mechanical robustness of this unit is a genuine engineering advantage over lower-cost alternatives.

MTBF exceeds 500,000 hours at 40 °C per IEC 61709. At a typical industrial duty cycle, that translates to decades of service life — which is why finding a failed QUINT PSU is often a sign that the unit has been in service since the original panel build and has simply reached end of life, not that the design is flawed.

Global Express Logistics

Our warehouse is located in Xiamen, Fujian Province — one of China’s primary export hubs with direct access to DHL Express, FedEx International Priority, and UPS Worldwide Express gateways. For urgent industrial replacement orders, we operate on the following dispatch schedule:

• Order confirmed before 14:00 CST: Same-day dispatch. DHL Express airway bill generated within 2 hours of payment.
• Order confirmed after 14:00 CST: Next business day dispatch, with tracking number sent to your email within 1 hour of shipment.

Typical transit times from Xiamen:

• Southeast Asia (Singapore, Thailand, Malaysia, Vietnam): 2–3 business days via DHL Express
• Middle East (UAE, Saudi Arabia, Qatar): 3–4 business days via FedEx International Priority
• Europe (Germany, Netherlands, Poland, UK): 4–5 business days via DHL Express Worldwide
• North America (USA, Canada, Mexico): 4–6 business days via FedEx International Priority
• South America (Brazil, Chile, Colombia): 6–8 business days via DHL Express
• Australia / New Zealand: 4–5 business days via DHL Express

All shipments include commercial invoice, packing list, and certificate of origin. For orders requiring import clearance documentation (HS code 8504.40 for power supply units), we provide pre-filled customs paperwork to minimize broker delays. Dangerous goods declaration is not required for this product. Export-controlled items are verified against applicable regulations prior to dispatch — no surprises at customs.

For orders of 3 or more units, contact us directly for consolidated freight options that reduce per-unit shipping cost without sacrificing transit speed.

Contact Information

Email: [email protected]
WhatsApp: +86 18359268345
Web: siemensplc.com
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