Description
The B&R 7DO135.70 is a high-performance 16-channel digital output module engineered for ultra-fast switching in precision automation systems. As a critical component of B&R Automation’s (ABB Group) X20 System, this module delivers microsecond-level response times to control actuators, solenoids, and indicators in real-time applications. Designed for dynamic industrial processes, the 7DO135.70 features 1 µs switching speed per channel – enabling synchronized control of high-speed mechanisms like laser cutters, servo clamps, and printing heads. Its MOSFET-based outputs support both sourcing and sinking configurations with 0.5 A continuous current per channel, while channel-to-channel isolation (500 V AC) ensures immunity to electrical noise in demanding environments.
Leveraging B&R’s deterministic X2X Link technology, the module achieves jitter-free output updates synchronized with motion controllers and vision systems. Integrated diagnostics monitor load conditions, short circuits, and overtemperature events, streaming real-time status to B&R’s Automation Studio engineering platform. The B&R 7DO135.70 operates across an industrial temperature range (-40°C to +60°C) and withstands 50g mechanical shock, making it indispensable for high-reliability applications in semiconductor manufacturing, packaging, and automated assembly.

7DO135.70 B&R
Technical Specifications
| Parameter Name | Parameter Value |
| Product Model | 7DO135.70 |
| Manufacturer | B&R Automation (ABB Group) |
| Product Type | High-Speed Digital Output Module |
| Number of Channels | 16 |
| Output Type | MOSFET (Sourcing/Sinking Configurable) |
| Output Current | 0.5 A per Channel (Continuous) |
| Max. Switching Voltage | 30 V DC |
| Switching Speed | 1 µs (On/Off) |
| Power Dissipation | 1.1 W per Channel (Max) |
| Channel Isolation | 500 V AC (Channel-to-Channel) |
| Short-Circuit Protection | Yes (Per Channel) |
| Overload Response | Current Limiting + Diagnostic Reporting |
| Connection Interface | X2X Link (Front-Mountable) |
| Operating Temperature | -40°C to +60°C |
| Derating | Required above 55°C ambient |
| Certifications | CE, UL, IEC 61131-2, IEC 61000-6-2/4 |
Main Features and Advantages
Ultra-Fast Precision Control: The B&R 7DO135.70 achieves industry-leading 1 µs switching times – 100× faster than standard PLC outputs. This enables precise timing for applications like ejection of defective products on high-speed conveyors or triggering strobe lights for machine vision inspection. Configurable slew rate control minimizes EMI emissions during switching.
Robust Load Management: Each MOSFET output features integrated short-circuit protection (≥1.1 A trip point) and overtemperature monitoring. Diagnostics report open-load conditions in OFF state and overloads in ON state to Automation Studio, enabling predictive maintenance. Parallel channel operation supports higher current loads (e.g., 2 channels = 1.0 A).
Engineering Efficiency: Front-accessible connectors simplify wiring, while hot-swap capability allows module replacement during operation (with compatible controllers). Software-configurable parameters eliminate hardware jumpers: users define per-channel behavior (pulsed/continuous), diagnostic thresholds, and fail-safe states. The compact 25 mm width saves panel space, and conformal coating options protect against corrosive environments. Combined with B&R’s deterministic X2X Link (<1>7DO135.70 ensures perfect synchronization in multi-axis systems.
Application Field
The B&R 7DO135.70 excels in industries demanding nanosecond-precision actuation. In electronics manufacturing, it controls pneumatic nozzles for precision solder paste deposition on PCBs at rates exceeding 50,000 placements/hour. Packaging lines leverage its speed to synchronize servo-driven capping heads and label applicators at 1,200 bottles/minute.
Automotive test benches use the module to simulate CAN/LIN bus signals via pulsed outputs for ECU validation. In printing, it triggers UV curing lamps with exact exposure timing to prevent substrate warping. Medical device assembly relies on its reliability to actuate micro-dose dispensers in sterile environments. The B&R 7DO135.70 also enables energy-efficient control in material handling – rapidly switching electromagnetic brakes on high-speed sorters – and synchronizes safety door locks in collaborative robotics.

7DO135.70 B&R
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