ABB 3BHT300009R1 DO620 Digital Output 32ch, 60VDC

ABB 3BHT300009R1 DO620 Digital Output 32ch, 60VDC

Overview

ABB DO620 is the ideal choice for medium and high voltage industrial automation.

The ABB DO620 is ideal for medium and high voltage industrial automation thanks to its high voltage output of 60VDC, four sets of optical isolation and ATEX certification. Its core advantage lies in voltage adaptability and safety, suitable for petrochemical, mining and other demanding scenarios. Users need to select the model according to the load voltage, current and environmental conditions, and follow the installation specifications to ensure long-term stable operation.

Product positioning and core features

ABB DO620 (3BHT300009R1) is the core component of Advant OCS S600 I/O system, designed for medium and high voltage industrial automation scenarios. Its core function is to convert digital signals into 60VDC outputs to drive high load devices such as solenoid valves, contactors and alarm lights. The module adopts four groups of opto-isolated design (8 channels per group), supporting single channel 500mA current and total output current ≤5A, which is suitable for complex industrial environments requiring electrical isolation.

Key parameters and performance comparison

Parameter: DO620 (3BHT300009R1)/DO610 (3BHT300006R1)

Output voltage: 60VDC (±20% tolerance)/24VDC (±20% tolerance)

Single-channel current: 500mA (total current ≤ 5A)/200mA (total current ≤ 5A)

Isolation design: four groups of optical isolation (each group of 8 channels)/non-isolation

Switching time: <1ms/ <1ms)

Operating temperature: 0°C to + 60°C/ -25°C to + 70°C

Approvals: ATEX II 2G Ex db IIC T6 Gb (explosion proof) /CE, UL

Typical applications: petrochemical, mining, high voltage equipment control/general industrial automation, low-cost high-density scenarios

Core Technical Advantages

Electrical isolation and safety

Four groups of optical isolation: each group of 8 channels is independently isolated, effectively preventing ground loop interference, suitable for multi-device cooperative control scenarios.

ATEX explosion-proof certification: meets the EU Ex II 2G standard, safe for use in Zone 1 and Zone 2 explosive gas environments.

High Voltage and Load Capacity

60VDC output: supports long distance signal transmission (e.g. mining area, harbour) and reduces voltage attenuation problem.

500mA single channel current: can directly drive small and medium-sized contactors or solenoid valves, reducing intermediate relay cascade.

Reliability design

Short circuit / overload protection: Built-in self-recovery fuse to avoid equipment damage.

Wide Temperature Adaptability: 0°C to + 60°C operating range, meets the needs of most industrial environments.

Modularity and compatibility

32-channel high density: saves space in the control cabinet and supports hot-swapping (requires power failure).

Protocol support: Compatible with ABB AC800M, AC500 and other controllers, configurable via Advant Master software.

Application Scenarios and Industry Adaptation

Petrochemical and oil and gas

High-pressure valve control: Drive 60VDC solenoid valve to achieve pipeline pressure regulation.

Explosion-proof area equipment: such as alarm lights and emergency shut-off devices in hazardous gas environments.

Mining and Metallurgy

Hoists and conveyor belts: control of high-voltage motor contactors, supporting long-distance signal transmission.

Crusher start/stop: direct drive of high load relays, reducing intermediate conversion links.

Power & Energy

High-voltage switchgear: operate 60VDC circuit breaker auxiliary contacts for remote switching.

Photovoltaic inverter management: Controls high-voltage relays in the convergence box to optimise power distribution.

Transport & Infrastructure

Railway signalling: actuates switching machines (requires 60VDC power supply).

Harbour cranes: control the valves of the high-pressure hydraulic system to improve operational efficiency.

Recommendations for selection and use

Comparison of Alternative Models

DO610: 24VDC non-isolated design, suitable for low-cost, high-density scenarios (e.g. packaging machinery).

DO810: Relay-isolated, single-channel 5A current, suitable for high loads without fast switching (e.g., heating ovens).

DO620: Balanced voltage, current and isolation requirements, suitable for medium and high voltage industrial environments.

Installation and Maintenance

Wiring regulations: Use cables from 2.5mm² upwards and ensure that the earth resistance is < 10Ω.

Thermal management: Avoid continuous full load operation in high temperature environments (>60°C), derating to 80% is recommended.

Troubleshooting: Locate the channel status by LED indicators, isolation group faults can be replaced individually.

Precautions

Voltage matching: Make sure the rated voltage of the load equipment is 60VDC to avoid over-voltage damage.

Environmental Protection: Installation in an IP54 rated control cabinet is recommended to prevent dust and moisture ingress.

Certification Compliance: Ensure compliance with ATEX directives for use in the European Union, and confirm local explosion-proof standards for other regions.