Description
The ABB VBX01TA is an advanced safety-enhanced servo drive module from ABB’s ACOPOSmicro series, designed for applications requiring integrated functional safety and precision motion control. Building upon the compact architecture of the VBX01BA, this drive adds comprehensive safety features certified to SIL 3/PLe standards while maintaining the same 22.5mm width footprint. The ABB VBX01TA supports brushless synchronous motors up to 400W and operates on 24-48VDC input, featuring dual-channel Safe Torque Off (STO), Safe Stop 1 (SS1), and Safe Operating Stop (SOS) functionality directly implemented in hardware. Its 50 µs control loop enables nanometer-level positioning accuracy for high-dynamic applications, with integrated EtherCAT communication for real-time synchronization in multi-axis systems. The ABB VBX01TA is engineered for collaborative robotics, medical devices, and safety-critical automation where personnel protection and precision must coexist. Through ABB’s Automation Studio platform, safety functions and motion parameters are configured cohesively, eliminating the need for external safety relays in many applications.

ABB VBX01TA
Technical Specifications
| Parameter Name | Parameter Value |
| Product Model | VBX01TA |
| Manufacturer | ABB (B&R Automation) |
| Product Type | Safety-Integrated Servo Drive |
| Output Power | 400W continuous (800W peak) |
| Input Voltage | 24–48 VDC (±15%) |
| Safety Standards | SIL 3, PL e (ISO 13849-1) |
| Safety Functions | STO, SS1, SOS, SLS (configurable) |
| Control Loop Cycle | 50 µs |
| Communication | EtherCAT FSoE (FailSafe over EtherCAT) |
| Feedback Interfaces | EnDat 2.2, BiSS-C, TTL/HTL incremental |
| Response Time | < 5ms> |
| Regeneration Handling | 15J per cycle (internal + external resistor support) |
| Operating Temperature | 0°C to +55°C (+32°F to +131°F) |
| Dimensions (W×H×D) | 22.5 × 124 × 119 mm |
| Certifications | UL, CE, IEC 61800-5-2, IEC 61508 |
Main Features and Advantages
Integrated Safety Architecture: The VBX01TA implements hardware-based safety functions including dual-channel STO with cross-monitoring, achieving SIL 3 without external components. Configurable Safe Limited Speed (SLS) and Safe Direction enable collaborative robot applications.
Deterministic Motion-Safety Synchronization: Combines 50 µs servo control cycles with EtherCAT FSoE communication, enabling safety functions to execute with <100>
Space-Optimized Safety: At 22.5mm width, it reduces safety system footprint by 70% compared to relay-based solutions. All safety I/O connects via the main drive connector using FailSafe Digital Input (FSDI) technology.
Advanced Diagnostics: Continuously monitors safety circuit integrity, with detailed fault logging through Automation Studio. Safety events trigger timestamped alerts with cause analysis for compliance reporting.
Seamless Engineering: Safety configuration integrates directly into motion projects within Automation Studio. Pre-validated safety function blocks (SS1, SOS etc.) simplify certification documentation.
Application Field
The ABB VBX01TA is indispensable in safety-critical motion environments. In collaborative robotics, it enables force-limited operation with real-time safety response when human contact occurs. Packaging machinery utilizes its SOS function for tool-changing procedures without full system shutdown. For medical linear actuators in radiotherapy equipment, the VBX01TA ensures precise positioning with hardware-level STO for emergency cutoff.
Automotive test benches leverage its SLS functionality during crash simulation while protecting technicians. Semiconductor wafer handling employs the drive’s vibration suppression algorithms and STO for emergency wafer retention. In elevator door control, the VBX01TA provides SIL 3-compliant obstruction detection via torque monitoring with safe direction locking. Food processing conveyors use its IP20-rated construction for washdown-area safety without external enclosures.
Related Products
VBX01BA: Non-safety variant with basic STO function
8BVI0110HWS00: SIL 3-rated ECM motor kit with holding brake
X20SM1436: Fail-safe digital input module for expanded safety signals
ACOPOS P3 SAFETY: Multi-axis safety drive for higher power
Automation Studio SafeDESIGNER: Safety configuration add-on
X20PS9400: 48VDC power supply with redundancy option
8V1015.00-2: External brake resistor (150W)

ABB VBX01TA
Installation and Maintenance
Pre-installation preparation: Verify safety category requirements (Cat. 3/4) and configure safety functions in Automation Studio offline. Ensure dual-channel wiring for safety inputs per EN 60204-1. Confirm external brake resistor compatibility if peak power exceeds 800W.
Maintenance recommendations: Validate safety function response times annually using ABB’s SafeCheck tool. Monitor safety circuit impedance quarterly (target ≤100mΩ). Replace safety-critical capacitors every 50,000 operating hours. Always disconnect both power and safety circuits before servicing. After maintenance, perform full safety validation test sequence.



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