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B&R X20BB82
Product Series: B&R X20 BB Series (Digital Input — High Voltage)
Product Overview:
The X20BB82 is an 8-channel digital input module designed for 48 V DC input signals. It provides group galvanic isolation and is intended for applications where higher voltage digital signals are used, such as in systems with 48 V DC control circuits or long cable runs requiring higher noise immunity.
Detailed content
Key Technical Specifications:
| Parameter | Value |
|---|---|
| Number of Channels | 8 |
| Input Type | Digital (48 V DC) |
| Input Voltage Range | 20 V DC to 60 V DC (logic “1”) |
| Input Current (Logic “1”) | Typical 4 mA |
| Input Current (Logic “0”) | < 1 mA |
| Isolation | Group-to-group: 500 V DC |
| Response Time (ON → OFF) | ≤ 0.2 ms (typ.) |
| Response Time (OFF → ON) | ≤ 0.2 ms (typ.) |
| Supply Voltage | 24 V DC (±20%) |
| Power Consumption | ≤ 1.2 W |
| Operating Temperature | -25°C to +70°C |
| Protection Class | IP20 (front), IP65 (with housing) |
| Dimensions (W x H x D) | 90 mm x 120 mm x 74.5 mm |
| Weight | Approximately 180 g |
| Connection | Screw terminal, 2.5 mm² |
| Diagnostics | Basic input status only — no wire-break diagnostic |
Functional Features:
- 8 channels rated for 48 V DC inputs
- Wide input voltage range (20–60 V DC) provides robust noise immunity
- Source (PNP) and sink (NPN) compatible
- Group isolation at 500 V DC
- 8 status LEDs
Working Principle:
Each input channel uses an optocoupler with extended voltage rating to handle the 48 V DC input. The internal circuit includes a voltage divider and clamping network to protect the optocoupler from overvoltage. The signal is processed and transmitted via the X20 bus to the PLC.
Material Composition:
- Housing: Glass-fiber reinforced polyamide (PA66-GF30), halogen-free
- Terminals: Tin-plated copper alloy
- PCB: FR-4, conformally coated
Structural Characteristics:
- DIN rail mounting (TS 35, EN 60715)
- Spring-loaded terminal connections
- 8 status LEDs
- Module width: 15 mm (X20 standard)
Advantages & Highlights:
- 48 V DC rated inputs — ideal for long cable runs and high-noise environments
- Wide 20–60 V DC range eliminates need for external voltage regulators
- Low power consumption of ≤ 1.2 W
- Drop-in compatible with 24 V DC modules in the X20 system
- Suitable for legacy 48 V DC systems
Applicable Industries:
- Legacy machine retrofit (48 V DC systems)
- Long-distance sensor wiring
- High-EMI environments (welding, motor drives)
- Marine and offshore equipment
- Mining and heavy industry
- Power distribution monitoring
Installation Requirements:
- Mount on DIN rail TS 35 (EN 60715)
- Connect 48 V DC signals — verify voltage does not exceed 60 V DC
- Maintain 10 mm spacing between modules
- Terminate unused inputs
Usage Precautions:
- Maximum input voltage is 60 V DC — do not exceed
- No wire-break diagnostic — use X20BB81 (24 V) if diagnostics needed
- Verify PNP/NPN compatibility with 48 V DC sensors
- Ambient: -25°C to +70°C
