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B&R X20BB80
Product Series: B&R X20 BB Series (Digital Input)
Product Overview:
The X20BB80 is an 8-channel digital input module for 24 V DC signals in the B&R X20 I/O system. It provides group galvanic isolation and is designed for applications requiring a moderate number of digital inputs in a compact form factor.
Detailed content
Key Technical Specifications:
| Parameter | Value |
|---|---|
| Number of Channels | 8 |
| Input Type | Digital (24 V DC) |
| Input Voltage Range | 10 V DC to 30 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 independent digital inputs
- Source (PNP) and sink (NPN) compatibility
- Group isolation between input banks
- Fast 0.2 ms response time
- 8 status LEDs for visual verification
Working Principle:
Each input channel uses an optocoupler for galvanic isolation. The 24 V DC input signal drives the optocoupler LED, and the phototransistor output is processed by the module’s internal logic. Data is transmitted to the PLC via the X20 bus. The 8 channels are divided into groups with 500 V DC isolation between groups.
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:
- Low power consumption of ≤ 1.2 W
- Compact size for space-constrained cabinets
- Fast response suitable for high-speed applications
- Wide input voltage range (10–30 V DC) for noise immunity
- Cost-effective solution for 8-channel applications
Applicable Industries:
- Small machine automation
- Conveyor systems
- Gate and barrier control
- Light curtain interfacing
- Valve position monitoring
- General purpose OEM machinery
Installation Requirements:
- Mount on DIN rail TS 35 (EN 60715)
- Connect 24 V DC sensors — PNP or NPN compatible
- Maintain 10 mm spacing between modules
- Terminate unused inputs to prevent floating signals
Usage Precautions:
- No wire-break diagnostic — use X20BB81 if diagnostics are required
- Do not exceed 30 V DC on any input
- Ensure correct PNP/NPN wiring based on sensor type
- Store at -40°C to +85°C
