PHÖNIX 2904371 DIN-Schienen-Schaltnetzteil

Vollständiger Bestellcode: UNO-PS/2AC/24DC/90W/C2LPS

Phoenix Contact UNO POWER Series 2-Phase Input DIN-Schienen-Netzteil

✅ Wichtige Spezifikationen

Eingang: 2-phase AC 400~500 V AC (Wide range: 264–575 V AC)

Ausgabe: 24 In DC, Nennstrom 3.75 A, 90 W

Adjustable output voltage: 24~28 V DC (via potentiometer)

Output ripple: ＜50 mVpp

Überspannungsschutz (OVP): ≤35 V DC

Stromverbrauch im Leerlauf: ＜0.7 W

Power factor cosφ: 0.48

Schutzklasse: IP20

Montage: NS35 DIN rail

Betriebstemperatur: -25℃ ~ +70℃; Derating 2.5% per Kelvin above 55℃

Terminals: Screw-type clamping terminals

C2LPS = NEC Class 2 output certification + hazardous area approval (Klasse I, Division 2, T4). The output circuit can be wired per Class 2 requirements without extra isolation or protective sheathing, suitable for powering PLCs, sensors and valve islands in explosion-proof cabinets.

No parallel or series connection allowed

✅ Typische Anwendungen

Control cabinets with 400V two-phase power supply, hazardous locations, Baumaschinen, HVAC, wind turbine auxiliary control systems; power supply for PLCs, Näherungsschalter, solenoid valves and HMIs.

Wichtiger Unterschied: Unlike conventional single-phase 220V UNO power supplies, this model is a high-voltage two-phase input version, which is frequently misselected on site.

✅ Replacement Reference

Single-phase counterpart in the same series: 2902994 (UNO-PS/1AC/24DC/90W/C2LPS), input range 85–264 V AC. Do not interchange the two models.

For higher power with the same structure: UNO 150W & 240W two-phase variants.

✅ Leitfaden zur Fehlerbehebung

1. DC-OK-Anzeige aus: First verify two-phase input voltage. The unit will not start under phase loss or input voltage below 264 V und.
2. Excessive voltage drop under load: Check for overcurrent or temperature-induced derating.
3. Frequent protection trips: Load short circuit or output earth fault. Klasse 2 models feature highly sensitive short-circuit protection.

PHÖNIX 2904371 (UNO-PS/2AC/24DC/90W/C2LPS) Installationshandbuch

Sicherheitsvoraussetzung: Nur Schrankmontage im Innenbereich, Schutzart IP20. C2LPS stands for Class 2 output plus Class I Division 2 Zertifizierung für explosionsgefährdete Bereiche. All installation in explosive environments must comply strictly with ISA-12.12.01 standards.

1. Produktübersicht

Bestell-Nr.: 2904371

Serie: UNO POWER 2-phase DIN rail power supply

Eingang: 2-phase AC 264–575 V (400V two-phase, NOT single-phase 220V)

Ausgabe: 24 In DC, 3.75 A / 90 W, adjustable 24–28 V

Montage: NS35 DIN rail (EN60715), horizontale Installation

Gehäusebreite: 55 mm

2. Freigabeanforderungen (Mandatory for Heat Dissipation)

Side-by-side horizontal installation: 0 mm minimum clearance (units may be mounted tightly together)

Vertical stacking: Minimum 30 mm upper and lower clearance for cooling air flow

No upside-down or side mounting; only horizontal installation with terminals facing forward/downward

Do not install adjacent to heat-generating components (Schütze, braking resistors); high ambient temperature will trigger power derating

Altitude derating: Power rating and insulation voltage must be reduced above 2000 m elevation

3. DIN-Schieneninstallation & Entfernung
4. Hook the top latch onto the NS35 rail first
5. Press down the unit until the latch clicks securely into place
6. Entfernung: Insert a flat screwdriver into the bottom latch tab, pry upward to release the lock and pull the unit off the rail

Vibrationsfestigkeit: Compliant with industrial cabinet vibration standards; no extra locking screws required once clipped firmly.

4. Verkabelungsspezifikationen (M3 Screw Terminals)

Terminaltyp: Screw clamping terminals

Leitergröße: Solid wire 0.2–2.5 mm²; stranded wire 0.2–2.5 mm²; AWG24～AWG14

Strip length: 8 mm

Cable temperature rating: ≥75℃ for ambient <55℃; ≥90℃ for 55~70℃ ambient

Anzugsdrehmoment: 0.5–0.7 Nm (Vermeiden Sie ein zu starkes Anziehen, um eine Beschädigung des Gewindes zu verhindern)

Terminaldefinition (Kritisch: Two-phase input, no neutral N!)

Eingangsklemmen: L1, L2 (two-phase 400V AC, neutral N is not connected); PE protective earth terminal

Ausgangsklemmen: +24 V, 0 V (24 In DC)

Adjustment potentiometer: ADJ (24~28 V fine-tuning; factory preset to 24 V)

Indikator: DC OK (green light ON = normal output; OFF = no output or protection active)

⚠️ Kritische Warnung: This is a 2-phase AC power supply. Never wire it as a single-phase L+N unit; incorrect wiring will cause failure or permanent damage.

5. Verdrahtungsreihenfolge (Lockout-Tagout Safety Procedure)
6. Confirm upstream circuit is de-energized and apply lockout-tagout
7. Connect PE protective earth first (reliable earthing is mandatory)
8. Wire the two-phase input lines L1/L2
9. Terminate the 24V DC load cables
10. Inspect for short circuits and earth insulation; confirm no shorted load circuits
11. Apply power and verify the DC OK green LED illuminates; trim the ADJ potentiometer to set target output voltage
12. Klasse 2 (C2LPS) wiring rule: Output cabling shall follow NEC Class 2 Spezifikationen; no shared trunking with high-voltage power cables without isolation barriers.
13. Schutzfunktionen & Fehlerdiagnose

Kurzschlussschutz: Constant current limiting. Klasse 2 versions feature high sensitivity; short-circuit triggers immediate shutdown, Automatische Wiederherstellung nach Fehlerbehebung.

Überlastschutz: Current exceeding 105% rated value activates current limiting

Überspannungsschutz (OVP): Output shuts down above 35 In DC

Thermal protection: Over-temperature shutdown; Automatischer Neustart nach dem Abkühlen

Unterspannung / Phasenverlust: No start-up if input voltage drops below 264 V und; DC OK light remains off.

7. Umweltfreundlich & Installationsbeschränkungen

Betriebstemperatur: -25℃ ~ +70℃; 2.5%/K power derating above 55℃

Luftfeuchtigkeit: 5%~95% non-condensing

Forbidden applications: Outdoor direct mounting, dusty/corrosive atmospheres, water splash exposure

Explosion-proof installation (Class I Div.2 T4): Cabinet-only mounting; external wiring must not create ignition sources, comply with flameproof/enclosure standards.

8. Parallel & Series Connection

❌ This model does NOT support parallel current expansion or series voltage boosting. Select the QUINT series if multi-unit parallel operation is required.

9. EMV & Erdung

The PE terminal must connect securely to cabinet protective earth; floating earth is prohibited

Upstream overcurrent protection recommendation: C-curve MCB, 1 Ein oder 2 A (for 400V two-phase circuit)

Klasse 2 output circuits normally do not require additional fuses; falls erforderlich, implement UL1310 Class 2 current-limiting designs.

10. Commissioning Checklist

Unit fully clipped onto DIN rail with no play

PE earth connection solid and reliable

L1/L2 two-phase input voltage stays within 264–575 V AC

No short circuit or earth fault on output wiring

DC OK green LED stays steady ON after power-up

Measured output voltage matches the set value

30 mm vertical cooling clearance is maintained top and bottom

III. UNO-PS Full Model List

3.1 UNO-PS / 1AC Single-phase Standard Models (24V-Ausgang)

3.2 Other Output Voltages (12V / 15V / 48V)

1. UNO-PS/2AC Two-phase Standard Models (Non-C2LPS, No Class 2 Explosionsschutz)

1. Modellbenennungsregel (Zur Auswahlreferenz)

UNO-PS / 1AC/2AC / 24Gleichstrom / 90W / C2LPS

1. 1AC = Single-phase input; 2AC = Two-phase 400V input (L1+L2, no neutral N)
2. 24DC = 24 V DC-Ausgang
3. 90W = Nominal output power
4. C2LPS = Class 2 Ausgabe + Class I Division 2 Zertifizierung für explosionsgefährdete Bereiche (only available for the 90W model)
5. Ergänzende Hinweise
6. Only two C2LPS explosion-proof models are available:

Einphasig: 2902994

Two-phase: 2904371 (Ihr Modell). No higher-power two-phase C2LPS variants exist.

2. No parallel current expansion for the entire UNO series. Use the QUINT series if parallel operation is required.
3. All units come with screw terminals (SC). The second-generation UNO models use push-in PT terminals and are not mechanically interchangeable with this housing.