The ABB SE96401981 CI526 power interface board manages power distribution and protection for distributed control system components. This compact module integrates seamlessly with ABB DCS backplanes. Its PCB measures 230 mm in length, 160 mm in width, and 30 mm in height.
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | ABB |
| Model | SE96401981 CI526 |
| Category | Power Interface Board |
| Input Voltage | 24 V DC (nominal) |
| Input Voltage Range | 18–32 V DC |
| Output Voltage 1 | 5 V DC (3.0 A) |
| Output Voltage 2 | 15 V DC (1.5 A) |
| Output Voltage 3 | –15 V DC (0.5 A) |
| Power Rating | 65 W |
| Efficiency | 89% |
| Protection Features | Overcurrent, overvoltage, reverse polarity |
| Internal Capacitance | 4,700 µF (input filtering) |
| Ripple and Noise | < 50 mV peak-to-peak |
| Dimensions (L×W×H) | 230 × 160 × 30 mm |
| Weight | 0.52 kg |
| Operating Temperature | –20°C to +60°C |
| Storage Temperature | –40°C to +85°C |
| Isolation Voltage | 1500 V DC (input-to-output) |
| Mounting Type | Backplane edge connector |
| Component Count | 96 components |
Power Conversion and Voltage Regulation
The ABB SE96401981 CI526 converts a 24 V DC input into multiple regulated output voltages. It delivers 5 V DC at 3.0 A for digital logic circuits and microprocessors. The board also provides 15 V DC at 1.5 A for analog circuitry and signal conditioning. A negative 15 V DC output at 0.5 A supports operational amplifiers and instrumentation modules.
Energy Storage and Input Filtering
A 4,700 µF capacitor bank filters the input supply to remove voltage ripple and transients. This large capacitance stores sufficient energy to bridge brief power interruptions effectively. The board maintains output stability even with input voltage fluctuations from 18 to 32 V DC. Such robust filtering ensures clean power delivery to sensitive control electronics.
Protection Systems and Fault Handling
The ABB SE96401981 CI526 includes comprehensive protection against overcurrent and overvoltage conditions. An input reverse polarity protection circuit prevents damage from incorrect wiring connections. Each output includes current limiting that activates during short-circuit or overload events. These protective features safeguard both the power board and connected system modules.
Efficiency and Thermal Performance
The board achieves 89% efficiency, minimizing power loss and heat generation during operation. This high efficiency allows the module to operate without forced air cooling in most applications. The PCB includes thermal vias that conduct heat away from power components. A temperature sensor on the board disables outputs if the temperature exceeds 80°C.
Backplane Interface and System Integration
The ABB SE96401981 CI526 connects to the DCS backplane through a robust edge connector. This connection delivers regulated power to all modules in the rack. The board includes status monitoring signals that report output health to the system processor. Engineers can mix multiple power boards for redundant or high-capacity configurations.
Component Layout and Circuit Design
This PCB contains 96 components, including switching regulators, transformers, and filter capacitors. Surface-mount technology enables compact placement and reduced parasitic effects. A multi-layer board design separates power and signal traces to minimize interference. The board uses high-temperature solder and flame-retardant materials for safety compliance.
Installation and Mounting Requirements
Mount the ABB SE96401981 CI526 directly onto the DCS backplane using the edge connector. Secure the board with the standard locking mechanism for vibration-resistant installation. The IP00 rating suits controlled cabinet environments exclusively. Proper chassis grounding ensures optimal noise immunity and operator safety.
Details
| Weight | 0.5 kg |
|---|---|
| Dimensions | 233 × 160 × 20 mm |
