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B&R X20BB52
Product Series: B&R X20 BB Series (Digital Input)
Product Overview:
The X20BB52 is a 16-channel digital input module for the B&R X20 I/O system. It accepts 24 V DC signals and provides galvanic isolation between channel groups. This module is designed for standard on/off signal acquisition from sensors, switches, and proximity detectors in machine automation.
Detailed content
Key Technical Specifications:
| Parameter | Value |
|---|---|
| Number of Channels | 16 |
| 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 | ≤ 1.8 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 200 g |
| Connection | Screw terminal, 2.5 mm² |
| Diagnostics | Basic input status only — no wire-break diagnostic |
Functional Features:
- 16 independent digital inputs in a single compact module
- Source (PNP) and sink (NPN) input compatibility
- Group isolation separates channels into electrically independent groups
- Fast response time of ≤ 0.2 ms for both state transitions
- LED indicators per channel for visual status verification
Working Principle:
Each digital input channel uses an optocoupler for galvanic isolation. The input signal drives an LED inside the optocoupler, which activates a phototransistor on the isolated side. The phototransistor output is processed by the module’s internal logic and transmitted to the PLC via the X20 bus interface. The module is organized into groups of 8 channels 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
- 16 status LEDs (one per channel)
- Module width: 15 mm (X20 standard)
Advantages & Highlights:
- High channel density — 16 inputs in one module
- Low power consumption of ≤ 1.8 W
- Fast switching speed suitable for high-speed counting applications
- Wide input voltage range (10–30 V DC) provides noise immunity
- Compact X20 form factor reduces cabinet footprint
Applicable Industries:
- Packaging machinery
- Assembly and pick-and-place systems
- Conveyor and material handling
- Textile machinery
- Printing and converting machines
- General machine building (OEM)
Installation Requirements:
- Mount on DIN rail TS 35 (EN 60715)
- Connect 24 V DC signal sources to the input terminals
- Use PNP (sourcing) or NPN (sinking) sensors based on wiring configuration
- Maintain minimum 10 mm spacing between modules for heat dissipation
- Terminate unused inputs with a pull-up or pull-down resistor to prevent floating states
Usage Precautions:
- Do not exceed 30 V DC on any input channel
- This module does NOT provide wire-break diagnostic — use X20BB57 if diagnostics are required
- Ensure correct polarity for sink/source sensor types
- Do not short-circuit input terminals
- Store at -40°C to +85°C
