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- ABB
- DD C779 BE02
- RETRO- PINT (ACS) Process Control Module
- Sweden
- 128 × 52 × 119 mm
- 0.65kg
- 3BHE006805R0002
- Xiamen, China
- New & In Stock
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Product Overview – ABB DD C779 BE02 (3BHE006805R0002)
Brand: ABB
Series / System: S800 I/O family, designed for ABB’s AC 800M distributed control system (DCS)
The DD C779 BE02 module is a redundant power supply unit, offering dual 24 V DC outputs with active current sharing. It delivers high availability via N+1 redundancy, fast fault switching, and compatibility with hot‑swap configurations—essential for process industries that must avoid costly downtime.
It fits seamlessly into ABB’s AC 800M control architecture, delivering supply to safety systems (SIS), turbine controls, and I/O modules under extreme industrial conditions—including power plants, refineries, offshore platforms, and chemical plants. It supports continuous operation even during grid fluctuations or component failures.
Key Applications
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Safety‑instrumented systems (SIS) in refineries and power plants, ensuring uninterrupted supply during plant upsets
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Turbine control systems, where loss of supply could cause operational trips
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Offshore and marine platforms, where hot-swap redundancy avoids downtime in harsh environments
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Pharmaceutical batch control, ensuring stable supply during critical filling processes
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Cryogenic control in LNG terminals, maintaining integrity of low-temperature chains during utility transitions
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Burner management systems, with SIL‑2 compliance, maintaining continuous flame control under fault conditions
Technical Specifications
| Parameter | Value |
|---|---|
| Module Type | Redundant Power Supply Module |
| Model / Material Code | DD C779 BE02 / 3BHE006805R0002 |
| Input Voltage | 100–240 V AC (auto-ranging) / 110–150 V DC |
| Output Voltage | 24 V DC ±1% (dual isolated outputs) |
| Output Current | 10 A continuous per channel; 20 A peak |
| Redundancy | N+1 parallel operation with active load sharing |
| Efficiency | > 90% (typical) |
| Protections | Over-current, over-temperature, short-circuit |
| Switchover Time | < 1 ms during failure |
| Diagnostics | Health monitoring (voltage, load balance, temperature), LEDs, software |
| Hot-Swap Support | Yes (pre-charge circuit) |
| Operating Temperature | –25 °C to +70 °C |
| MTBF | > 500,000 hours (calculated) |
| Dimensions (H×W×D) | 128 × 52 × 119 mm |
| Weight (kg) | 0.65 kg |
| Certifications | UL 508, ATEX/IECEx Zone 2, CE, SIL 2 |
Related / Same‑Series or Functionally Similar Modules
| Model | Type / Function | Key Specs (incl. size & weight) |
|---|---|---|
| DD C779 CE102 (3BHE027859R0102) | Redundant power/PLC module | Redundant power & communication, –20 °C to +70 °C, IP20, 2.5 kg, 25×30×30 cm |
| PM865 | Controller processor (AC 800M) | High-performance CPU, powers IO, compact rack mounting |
| 3BSE018105R6002 | Redundant power supply baseplate | Supports hot-swap, integrates redundancy hardware |
| CI854 | PROFIBUS communication module | Gateway between PROFIBUS and control systems |
| SD822 | Serial communication module (RS‑232/422/485) | Field communication interface for legacy networks |
Other Popular ABB Modules (Same Brand, Different Systems)
| Model | Type / Application | Quick Specs Summary |
|---|---|---|
| ACS580 I/O Expansion | Expansion module for ACS580 drives | Extends I/O, RS485 & Modbus RTU, 88×30×23 mm, 0.1 kg, IP20 |
| DD C779 (circuit card) | General CIRCUIT Card assembly | Approx. 900 g equipment component |
| Ethernet Comm Module | Communication interface module | Ethernet/serial comms, analog/digital I/O, 24 V DC, IP65, –20 °C to 60 °C |
| Compact I/O Module | Digital I/O module | Typical mid-size module, field I/O operations |
| AC 800M Processor | Main controller for DCS | Houses logic execution and communications |
FAQ – Q&A Format
Q1: What does “redundant power supply” mean in this module?
A1: It means having two power channels that share load and automatically switch over if one fails—ensuring uninterrupted output.
Q2: What industries benefit most from its features?
A2: Refineries, power plants, offshore platforms, LNG terminals, pharmaceuticals—anywhere power reliability and uptime are critical.
Q3: How fast is the switchover during a fault?
A3: Under 1 millisecond—virtually seamless to connected control systems.
Q4: Can it be replaced without shutting down the system?
A4: Yes. It supports hot-swapping with pre-charge circuitry to prevent disruptions.
Q5: What diagnostics are available?
A5: It tracks input/output voltages, load balance, temperature; includes status LEDs and software-based health monitoring.
Q6: What environmental conditions can it handle?
A6: Extremely wide range: –25 °C to +70 °C; designed for rugged, industrial environments, including hazardous zones.
Q7: What certifications does it carry?
A7: Certified to UL 508, ATEX/IECEx Zone 2, CE standards, and met SIL 2 criteria for safety systems.
Q8: How heavy and large is the module?
A8: Dimensioned at 128 × 52 × 119 mm and weighing roughly 0.65 kg.
Q9: How reliable is it in terms of lifespan?
A9: Its MTBF exceeds 500,000 hours, indicating high long-term reliability.
Q10: What happens if one output fails?
A10: The remaining redundant channel maintains supply; fault is flagged immediately via diagnostics.
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Fast delivery. Spot goods can be shipped on the same day, and the delivery time transaction is 20% faster than that of peers on average, with a delivery time accuracy rate of 99%.
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