Description

The B&R 7DO135.70 is an 8-channel digital output (DO) module designed for the X20 modular automation system by B&R Industrial Automation (now part of the ABB Group). This compact, high-performance I/O module provides sink-type (NPN) transistor outputs rated for 24 V DC at up to 0.5 A per channel, making it ideal for directly driving industrial loads such as relays, solenoid valves, LED indicators, small contactors, and alarm beacons.

Engineered for reliability in demanding environments, the 7DO135.70 features galvanic isolation (500 V RMS) between the field side and the internal X20 bus, protecting the controller from voltage spikes, ground loops, and electrical noise common in factory settings. Each output channel includes integrated protection against short circuits, overloads, and reverse polarity—enhancing system robustness and reducing downtime due to accidental wiring faults.

The module supports hot swapping in compatible X20 configurations, allowing replacement without powering down the entire control cabinet—critical for continuous production lines. Eight yellow status LEDs provide real-time visual feedback for each output state (ON = lit), enabling rapid troubleshooting during commissioning or maintenance. Configuration, diagnostics, and integration are handled seamlessly through B&R Automation Studio, with full compatibility with mapp Technology components like mapp IO and mapp View.

Widely deployed in industries including packaging, automotive assembly, printing, and intralogistics, the 7DO135.70 delivers a balance of density, performance, and long-term availability—hallmarks of B&R’s X20 I/O platform.

B&R 7DO135.70

Technical Specifications

Main Features and Advantages

✅ High Channel Density in Compact Form:
8 outputs in a single X20 slot reduce cabinet space and wiring complexity compared to relay-based solutions.

✅ Robust Electrical Protection:
Integrated safeguards prevent damage from common field errors—such as shorted solenoid coils or reversed wiring—improving mean time between failures (MTBF).

✅ Fast & Deterministic Switching:
Transistor outputs enable rapid cycling for applications like high-speed sorting gates or pulse-width modulation (PWM) of heaters.

✅ Clear Visual Diagnostics:
Per-channel LEDs allow instant verification of output states without probing live terminals—accelerating debug during machine startup or fault recovery.

✅ Seamless Ecosystem Integration:
Works natively with X20 CPUs, ACOPOS servo drives, Panel PCs, and mapp IO—enabling rapid application development with reusable software components.

Application Field

In a carton packaging machine, the 7DO135.70 controls reject air valves, product counters, and status tower lights—ensuring synchronized ejection of misaligned boxes at 200 ppm.

At an automotive body shop, it triggers spot-weld gun cooling solenoids and safety light curtains based on robot position—contributing to cycle-time optimization and operator safety.

In a warehouse conveyor system, the module activates zone diverters, barcode scanner triggers, and accumulation sensors—enabling flexible sortation logic in real time.

B&R 7DO135.70

Related Products

• X20CP1585 / X20CP3585: X20 CPU modules—required to control the70

• 70: Higher-current version (2 A per channel)—for larger relays or contactors

• 70: 8-channel digital input counterpart—often used in same chassis

• X20TB12 / X20TB52: Terminal blocks—spring-cage (TB12) or screw-type (TB52) for field wiring

• 70: Source-type (PNP) digital output module—alternative for PNP-sensor ecosystems

• Automation Studio: Engineering software for hardware configuration and PLC programming

• X20BM11 / X20BM15: X20 backplanes—for mounting multiple I/O modules