The 6EP1436-3BA10 is a SITOP PSU300M three-phase AC/DC power supply from Siemens, designed for industrial automation and control systems requiring reliable 24V DC power. As part of the SITOP MODULAR series, this model combines robust performance, compact design, and advanced functionality to meet the demands of modern industrial environments. Below is a detailed technical overview:
Core Electrical Specifications
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Input:
- Three-phase AC: 320–575V AC (47–63Hz), compatible with global industrial grids (nominal 400–500V AC) .
- Input Current: 1.2A at 400V AC, 1.0A at 500V AC, ensuring efficient power utilization .
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Output:
- Adjustable 24V DC: Delivers a rated 20A (480W), with voltage adjustability from 24–28.8V DC to compensate for voltage drops in long cable runs .
- Stability: ±1% voltage regulation under varying loads, minimizing ripple/noise to ≤100mV peak-to-peak .
Performance & Efficiency
- Power Boost: Provides 1.5× rated current (30A) for up to 5 seconds to handle motor startups or inrush currents .
- Efficiency: Achieves 94% efficiency at full load, reducing energy waste and heat generation in control cabinets .
- Overload Handling:
- Constant Current Mode: Maintains output at reduced current during overloads.
- Latch-Off Mode: Disables output until fault is cleared (user-selectable via DIP switch) .
Protection & Monitoring
- Comprehensive Safeguards:
- Short-circuit protection with automatic recovery.
- Overvoltage protection (trips at ~30V to shield downstream devices).
- Over-temperature shutdown with self-resetting capability .
- Status Indicators:
- Green LED for normal operation; red LED for faults (overload, overtemperature).
- Optional signaling modules (sold separately) enable remote monitoring of output status and remote ON/OFF control .
Design & Installation
- Compact Form Factor: Measures 70mm (W) × 121mm (H) × 125mm (D), mounting on 35mm DIN rails (EN 60715) for space-efficient cabinet integration .
- Durable Construction: IP20-rated metal enclosure resists dust and mechanical shocks, withstanding vibrations (10–57Hz, 0.15mm amplitude) .
- Expandability:
- Parallel Operation: Supports load-sharing with up to 4 units for higher power (e.g., 80A with 4 modules).
- Redundancy Modules: Compatible with SITOP redundancy kits for fault-tolerant setups .
Environmental & Compliance
- Operating Temperature: 0°C to +60°C (derating may apply at higher temperatures) .
- Storage Temperature: -40°C to +85°C.
- Certifications: CE, cULus, EMC (EN 61000), and marine approvals (ABS, DNV) for global applications .
- EMC Performance: Compliant with EN 55022 Class B for low electromagnetic interference .
Typical Applications
- Industrial Automation: Powering PLCs, HMIs, sensors, and actuators in manufacturing lines.
- Process Control: Supporting distributed I/O systems and instrumentation in chemical/petrochemical plants.
- Machine Tools: Providing stable 24V DC for CNC systems, robotics, and servo drives.
- Redundant Setups: Ideal for critical operations requiring backup power via SITOP buffer modules .
Key Advantages
- Universal Input: Works with 320–575V AC grids, eliminating the need for voltage converters.
- Flexible Voltage Adjustment: 24–28.8V DC output accommodates voltage drops in large-scale installations.
- Energy Efficiency: High efficiency reduces operational costs and heat dissipation.
- Reliability: Metal housing and robust protection ensure long-term performance in harsh environments.
While the 6EP1436-3BA10 is in a phase-out lifecycle status (discontinued since September 2021) , it remains a viable choice for legacy systems or applications requiring its specific features. Siemens offers successor models like the SITOP PSU8200 series for new projects, which provide enhanced connectivity (e.g., PROFINET) and advanced diagnostics .
In summary, the 6EP1436-3BA10 exemplifies Siemens’ commitment to industrial power reliability, combining scalability, precision, and durability to support mission-critical operations.
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