ABB PFSA140RULLM7A Power Supply Critical Installation & Operation Precautions
Part No.: 3BSE006503R1
Certification: UL 508 (File E103069), IEC 62368-1
️ Mandatory Pre-Installation Checks
-
Environmental Limits
- Ambient Temperature:
• Continuous operation: -25°C to +70°C
• Derate linearly above 55°C (max 85°C surface temp) - Humidity: 5-95% RH non-condensing (conformal coating: IPC-CC-830B)
- Altitude: ≤2000m (derate 1%/100m above 2000m)
- Ambient Temperature:
-
Electrical Verification
textCopy CodeInput Voltage: 100-240V AC ±10% (47-63Hz)
Inrush Current: 45A peak (20ms duration max)
Isolation Resistance: >100MΩ @500V DC (input-output)
Critical Mounting Constraints
| Parameter | Requirement |
|---|---|
| Clearance to chassis | ≥25mm top/bottom (convection cooling) |
| DIN rail torque | 0.8 Nm ±0.1 Nm (EN 60715 compliant) |
| Adjacent heat sources | ≥100mm from transformers/power devices |
| EMC separation | ≥300mm from VFDs or RF transmitters |
WARNING: Avoid vertical mounting – heat dissipation reduced by 40%. Use only horizontal orientation (±5° tolerance).
Electrical Safety Protocols
Wiring Requirements:
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• Input Protection: Min. 10A gL/gG fuse (IEC) or Class CC (UL)
• Grounding: 4mm² min copper wire (PE terminal to chassis <0.1Ω)
• Separation:
- AC mains: CAT III reinforced insulation
- 24V DC outputs: Double insulation (CAT II)
Prohibited Actions:
- NEVER parallel outputs for increased current (use PSU redundancy kit R8-1)
- DO NOT connect DC- outputs to chassis ground (floating design)
- Absolute maximum capacitive load: 22,000µF per output channel
Thermal Management
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Thermal Derating Curve:
+55°C → 100% rated load (120W)
+70°C → 60% rated load (72W max)
Monitoring:
• Over-temperature cutoff: 85°C ±3°C (auto-recovery)
• Mandatory airflow: >0.5m/s if ambient >40°C
️ EMC & Surge Protection
Compliance Boundary Conditions:
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[Installation Must Include]
1. Input filter: ABF-142A (Schaffner FN3280H equivalent)
2. Output varistors: ≤50nH inductance path
3. Shielded cables: >85% coverage (terminated at PSU end)
[Tested Immunity]
• EN 61000-4-5: 2kV line-earth surge
• EN 61000-4-4: 4kV burst on I/O lines
PFSA140RULLM7A 3BSE006503R1 ABB pdf
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