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- BC820K02
- CEX-Bus Interconnection Unit
- Sweden
- 125 × 70 × 110 mm
- 0.5kg
- 3BSE071500R1
- Xiamen, China
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Product Technical Profile – ABB BC820K02 (3BSE071500R1)
1) Brand and Series Information
Brand: ABB
Series: AC500 Modular PLC Platform
The AC500 Series is a modular programmable logic controller platform designed for industrial automation tasks ranging from small machinery control to large-scale process systems. The architecture includes CPU modules, digital and analog I/O modules, communication interfaces, power supply units, and base modules that form the structural and electrical backbone of the system.
The BC820K02 is a compact base module within the AC500 platform. It provides mechanical support, internal bus communication, and power distribution for installed PLC modules. It is particularly suited for compact control cabinets and localized automation systems.
2) Product Overview
The ABB BC820K02 (3BSE071500R1) is a PLC base and backplane module designed to interconnect AC500 automation components. It functions as the mounting platform and electrical interface for CPU units and I/O modules, enabling seamless integration within industrial control systems.
BC820K02 features an integrated backplane bus system that distributes 24 V DC power and communication signals to all installed modules. The compact design makes it ideal for installations where cabinet space is limited while maintaining full system functionality.
Its industrial-grade housing ensures stable performance under typical factory conditions including vibration and temperature variation.
3) Technical Parameters
| Parameter | Specification |
|---|---|
| Model | BC820K02 (3BSE071500R1) |
| Product Type | PLC Base / Backplane Module |
| Series | AC500 Modular PLC |
| Maximum Module Slots | 6 modules |
| Backplane Communication | Integrated high-speed bus |
| Bus Voltage | 24 V DC |
| Backplane Current Capacity | 5 A |
| Mounting Type | DIN Rail (35 mm) |
| Protection Rating | IP20 |
| Operating Temperature | −20°C to +60°C |
| Storage Temperature | −40°C to +85°C |
| Relative Humidity | 5–95% non-condensing |
| Housing | Flame-retardant industrial polymer |
| Dimensions (H × W × D) | 125 × 70 × 110 mm |
| Weight (kg) | 0.50 kg |
| Cooling Method | Passive air cooling |
| Installation Environment | Indoor control cabinet |
4) Detailed Product Description
The BC820K02 base module is engineered to provide a compact yet reliable foundation for modular PLC systems. It physically supports up to six AC500-compatible modules, ensuring stable mechanical alignment and secure installation.
Internally, the module incorporates a backplane bus that handles communication and power distribution. This eliminates the need for extensive external wiring between modules and significantly reduces potential wiring errors.
The structure is reinforced to withstand operational vibration and continuous usage. The slot layout allows straightforward module replacement or expansion, minimizing downtime during maintenance or system upgrades.
BC820K02 is commonly deployed in decentralized control systems where compact size and reliability are key requirements.
5) Key Advantages
Compact System Design
Optimized for small and medium-sized automation cabinets.
Integrated Communication Bus
Ensures stable data exchange between modules without additional cabling.
Flexible Expansion Capability
Supports up to six modular components within a single rack.
Industrial Durability
Designed for continuous operation in demanding environments.
Simplified Installation
DIN rail mounting and structured terminal layout reduce installation time.
Improved System Reliability
Reduced external wiring lowers risk of connection faults.
Low Maintenance Requirements
Minimal servicing needed due to passive internal design.
6) Typical Applications
• Machine automation systems
• Packaging and conveyor control panels
• Small-scale process automation
• Water and wastewater treatment controllers
• Energy distribution monitoring systems
• Building management automation
• Motor control centers
• Distributed I/O cabinets
7) Five Related Models (AC500 Series or Similar Base Modules)
| Model | Function | Slots | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|
| BC820K01 | Compact Base Module | 6 | 125 × 70 × 110 | 0.48 |
| BC810K01 | Standard PLC Base | 8 | 125 × 85 × 120 | 0.55 |
| BC810K02 | Extended PLC Base | 8 | 125 × 95 × 120 | 0.58 |
| BC830K01 | Large Rack Base | 10 | 125 × 130 × 120 | 0.82 |
| BC800K01 | Starter Base Module | 4 | 125 × 50 × 100 | 0.40 |
8) Five Popular Models (Same Brand – Industrial Portfolio)
| Model | Product Type | Primary Rating / Feature | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|
| ACS580-01-12A6-4 | Variable Frequency Drive | 5.5 kW | 358 × 152 × 203 | 6.5 |
| ACS880-01-017A-4 | Drive Inverter | 17 kW | 220 × 120 × 180 | 3.6 |
| Emax 2 E1.6 | Air Circuit Breaker | 1600 A | 280 × 140 × 160 | 6.0 |
| Tmax XT4N | Molded Case Circuit Breaker | 250 A | 140 × 105 × 160 | 2.1 |
| AF12-30-10 | Contactor | 12 A | 86 × 45 × 77 | 0.36 |
9) Frequently Asked Questions (FAQ)
Q1: What is the main function of BC820K02?
A1: It acts as the base and backplane module for AC500 PLC components, providing mechanical support and internal bus communication.
Q2: How many modules can be connected?
A2: Up to six modules can be installed on this base.
Q3: Does it include a power supply?
A3: No, it distributes 24 V DC from an installed power supply module; it does not generate power itself.
Q4: Is additional wiring required between modules?
A4: No, communication and power are handled internally by the backplane bus.
Q5: What environments is it designed for?
A5: Indoor industrial control cabinets with temperatures between −20°C and +60°C.
Q6: What is the mounting method?
A6: Standard 35 mm DIN rail mounting.
Q7: Can digital and analog modules be mixed?
A7: Yes, AC500 digital and analog modules can be combined on the same base.
Q8: What maintenance does it require?
A8: Periodic inspection of mounting and module seating is generally sufficient.
Q9: Is it suitable for distributed automation systems?
A9: Yes, it can serve as a local control rack in decentralized architectures.
Q10: What is the key benefit compared to larger base modules?
A10: Its compact size makes it ideal for smaller panels while retaining full PLC functionality.