ABB DO620 3BHT300009R1 – Digital Output Module for Advant S600 I/O

The ABB DO620 (part no. 3BHT300009R1) is a digital output module from the Advant S600 I/O family, typically used alongside Advant controllers in process automation. From my experience, it’s the go‑to card when you need dense, reliable 24 VDC output signaling for interposing relays, lamps, solenoids, and general on/off devices—without sacrificing cabinet space. One thing I appreciate is how it plugs into the S600 termination unit so you can replace the module without disturbing field wiring.

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Key Features

• Advant S600 form factor – Fits the S600 I/O ecosystem and termination units for fast swap and tidy wiring.
• Dense digital outputs – Commonly used as a multi‑channel 24 VDC transistor output card for driving relays, lamps, and solenoids.
• Channel status LEDs – You might notice diagnostics at a glance during commissioning or troubleshooting.
• Group isolation and protection – In many cases the outputs are grouped, which helps contain faults and simplify fusing.
• Service-friendly replacement – Field wiring remains on the base/terminal unit; the module can be replaced with minimal downtime.
• System integration – Works with Advant controllers and S600 interfaces; no special adapters typically required.

Technical Specifications

Application Fields

Plants running Advant DCS or mixed ABB architectures typically use the DO620 for discrete actuation. Common sectors include:

• Power generation (balance‑of‑plant sequencing, MCC interface via interposing relays)
• Oil & gas and petrochemicals (valve solenoids, permissive signals, skids)
• Pulp & paper (machine section interlocks, drives signaling)
• Metals & mining (conveyors, lubrication systems, alarms/beacons)
• Water & wastewater (pump/valve actuation, panel indicators)

One maintenance engineer mentioned that swapping a DO620 during a planned stop was “plug out, plug in, verify LEDs, done”—the wiring stayed in place on the base, which saved time compared with older terminal strips.

Advantages & Value

• Reliability – Proven Advant S600 hardware that tends to run for years with minimal drift.
• Compatibility – Drop‑in fit for existing S600 termination units and Advant controllers, reducing retrofit effort.
• Lifecycle support – Helps extend installed Advant systems without re‑engineering the cabinet layout.
• Cost control – High channel density lowers per‑point cost; interposing relays can be added only where needed.
• Technical backing – We can help verify firmware compatibility and recommend matching terminal bases and accessories.

Installation & Maintenance

• Cabinet environment – Keep within a clean, dry enclosure with adequate ventilation; avoid hotspots near VFDs or contactors.
• Wiring practice – Use correctly rated 24 VDC wiring for outputs; group fusing per output bank is recommended.
• Grounding/shielding – Bond DIN rails and maintain a single‑point reference to limit noise on long runs.
• Commissioning – Verify channel polarity (sourcing vs. field wiring), and test each critical output with load before handover.
• Maintenance – Periodically check terminal tightness, clean dust, and review channel diagnostics/LEDs during scheduled stops.
• Spare strategy – Keep at least one DO620 spare per cabinet row where downtime is costly; replacement is typically quick on the termination unit.

Quality & Certifications

• Certifications: CE; RoHS; UL/cUL for industrial control equipment (module-level approvals typically apply to this family).
• Manufacturing system: ISO 9001 quality management at the OEM level.
• Warranty: 12 months from delivery as stated above.

Recommended Accessories and Related Items

• S600 termination unit/base compatible with DO620 (for plug‑in mounting and field terminations).
• Interposing relay modules for higher load currents or AC loads.
• Fuse terminal blocks for grouped channel protection.
• Pre‑wired ribbon/field cables to speed commissioning on repeat builds.

If you share your installed controller and current termination unit model, we can double‑check the exact channel count and output type against your revision to ensure a perfect drop‑in.