B&R X20SO4120 – 4-Channel Solid-State Digital Output Module | X20 Automation System
Engineering Background
The X20 System is B&R’s flagship modular I/O platform, engineered for high-density, high-speed process automation in demanding industrial environments. Designed around a backplane bus architecture, X20 modules integrate seamlessly with B&R Automation Studio and POWERLINK/X2X Link fieldbus topologies, enabling deterministic real-time control across distributed machine architectures.
Product Positioning
The X20SO4120 is a 4-channel solid-state digital output module optimized for switching inductive and resistive loads in safety-relevant and standard automation applications. Its compact DIN-rail form factor and tool-free wiring make it the preferred choice for OEMs and system integrators building high-channel-density control panels with minimal footprint.
Complete Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | X20SO4120 |
| Manufacturer | B&R Industrial Automation GmbH |
| Module Type | Digital Output (DO) |
| Output Channels | 4 × solid-state digital outputs |
| Output Voltage Range | 24 V DC (nominal) |
| Output Current per Channel | 0.5 A (max) |
| Total Output Current | 2 A (all channels combined) |
| Output Type | Solid-state (transistor, sourcing/PNP) |
| Short-Circuit Protection | Electronic, auto-reset |
| Overload Protection | Yes – thermal shutdown |
| Switching Frequency | Up to 1 kHz |
| Bus Interface | X2X Link (B&R proprietary) |
| Backplane Power Supply | Via X20 bus module (X20BM01 or compatible) |
| Field Supply Voltage | 24 V DC ±25% |
| Power Consumption (internal) | Refer to B&R datasheet |
| Isolation | Electrically isolated outputs from bus logic |
| Wiring | Spring-clamp terminals, tool-free |
| Conductor Cross-Section | 0.5–1.5 mm² |
| Mounting | DIN rail (EN 60715 TS35) |
| Dimensions (W × H × D) | 12.5 × 99 × 71.5 mm (approx.) |
| Weight | ~100 g |
| Operating Temperature | 0 °C to +55 °C |
| Storage Temperature | -25 °C to +70 °C |
| Relative Humidity | 5–95%, non-condensing |
| Protection Rating | IP20 |
| EMC Compliance | CE, EN 61131-2 |
| Certifications | CE, UL (refer to B&R certification database) |
| Compatible CPU / Controller | All X20 CPUs with X2X Link support |
| Programming Environment | B&R Automation Studio 4.x / 6.x |
Proven Application Environments
- Machine Tool & CNC: Spindle brake control, coolant valve switching, axis enable signals
- Packaging Machinery: Solenoid valve actuation, conveyor drive enable, reject gate control
- Automotive Assembly: Fixture clamp control, part-present confirmation outputs, safety relay activation
- Food & Beverage: Hygienic valve control in washdown-adjacent panels (IP20 enclosure required)
- Printing & Converting: Web tension brake release, register mark output triggers
- Semiconductor & Electronics: Pick-and-place actuator control, vacuum generator switching
- Water Treatment: Pump start/stop, valve open/close, alarm relay outputs
Engineering Advantages
- Solid-State Reliability: No mechanical contacts — eliminates contact bounce, arc erosion, and wear-related failures in high-cycle applications.
- Electronic Short-Circuit Protection: Auto-reset overcurrent protection prevents module damage and reduces unplanned downtime.
- Compact 12.5 mm Pitch: Maximizes channel density in space-constrained control cabinets — 4 outputs in a single slim-line slot.
- Tool-Free Spring-Clamp Wiring: Reduces panel wiring time and eliminates screw-torque variability for consistent field connections.
- X2X Link Bus Integration: Deterministic cycle times down to 200 µs enable precise synchronization with motion and safety functions.
- Hot-Swap Capable: Modules can be replaced under power (with appropriate bus module configuration), minimizing maintenance windows.
- Automation Studio Native: Full I/O mapping, diagnostics, and firmware management within B&R’s unified engineering environment — no third-party configuration tools required.
System Architecture & Signal Flow
The X20SO4120 mounts directly onto an X20 bus module (e.g., X20BM01) which provides both backplane power and X2X Link communication. The CPU cyclically writes output data to the module via the X2X Link at the configured bus cycle time. Each output channel drives a solid-state switch (PNP sourcing) that connects the 24 V DC field supply to the load. Diagnostic bits for each channel (short-circuit, overload) are mapped back to the CPU’s input image for real-time fault detection in the application program.
Signal path: CPU Output Image → X2X Link Frame → X20SO4120 Output Register → Solid-State Switch → Field Load → GND
Sourcing & Quality Verification
- Authentic Hardware: All X20SO4120 units sourced by Konmask.com are genuine B&R components — no counterfeit, refurbished-as-new, or grey-market stock.
- Traceability: Each module ships with original B&R labeling, date code, and serial number intact for full supply-chain traceability.
- Pre-Shipment Inspection: Units undergo visual inspection and packaging integrity check prior to dispatch.
- Documentation Available: B&R datasheet, declaration of conformity, and wiring diagrams available upon request — contact support@konmask.com.
- Warranty: 12-month hardware warranty against manufacturing defects. Defective units replaced or refunded per Konmask.com returns policy.
Procurement Process
- Confirm Part Number: Verify X20SO4120 against your B&R project BOM or Automation Studio hardware configuration.
- Check Quantity & Lead Time: Contact us for real-time stock levels and bulk pricing — support@konmask.com or +0086 19859288691.
- Place Order: Add to cart and complete checkout, or request a formal quotation for PO-based procurement.
- Shipping: DHL / FedEx / SF Express available. Export documentation (commercial invoice, packing list, HS code 8537.10) provided for international shipments.
- Receive & Verify: Inspect packaging and label on receipt. Report any discrepancies within 48 hours of delivery.
Technical FAQ
Q: Can the X20SO4120 switch AC loads?
A: No. The X20SO4120 is rated for 24 V DC loads only. For AC output switching, refer to B&R relay output modules (e.g., X20SR series).
Q: Is the module compatible with X20 Safety CPUs?
A: The X20SO4120 is a standard (non-safety) output module. For SIL-rated applications, use B&R’s X20 SafeIO series (e.g., X20SO6300).
Q: What bus module is required?
A: Any X20 bus module supporting X2X Link is compatible — typically X20BM01 (standard) or X20BM11 (with field supply isolation).
Q: Can I use this module with a non-B&R PLC?
A: No. X20 modules communicate exclusively via B&R’s X2X Link protocol and require B&R Automation Studio for configuration. They are not compatible with third-party PLCs.
Q: What is the maximum cable length from module to field device?
A: B&R does not specify a hard limit, but standard industrial practice recommends ≤30 m for 24 V DC digital I/O to maintain signal integrity and voltage drop within spec.
Q: Is firmware update required on new modules?
A: Automation Studio will prompt for firmware synchronization on first connection. Ensure your AS project firmware version matches the module’s supported range.
© 2026 Konmask.com. All rights reserved.
Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
