Product Overview

The B&R 3DO486.6​ (material ID 3DO486.6, B&R ID code $42) is a 32-channel digital output module belonging to B&R’s 2005 Series​ compact I/O/system rack family — B&R (Bernecker + Rainer, Austria) having been acquired by ABB in 2017, so the module sits in the broader ABB Group automation portfolio alongside AC 800M, 800xA, and S800, though it remains B&R-branded and B&R-ecosystem native. The 3DO486.6​ is a pure transistor (FET, positive-switching / source-type) output card: 32 outputs at 24 V DC nominal, 0.5 A continuous per channel, arranged in 2 galvanically isolated groups​ (Group 1: channels 1–16, Group 2: channels 17–32), with each group rated to 8 A continuous and the full module to 16 A total. It plugs into the B&R 2005 main rack or expansion rack (2005 is a Euro-card–width compact PLC/I/O chassis, DIN-rail or panel friendly, often deployed as machine-level control in packaging, printing, textile, plastics, and automotive subsystem applications).

The 3DO486.6​ is the high-density DO member of the 2005 digital-output subfamily — sibling 3DO479.6 gives 16× 0.5 A, 3DO480.6 gives 16× 2 A, 3DO487.6 adds readable-output-status at 16× 2 A — so the 3DO486.6 is chosen when the machine has 32+ solenoid/valve/indicator/contact-coil points and wants them consolidated on one 2005 slot rather than two. Each output channel is FET-switched (source/topology, meaning the module supplies +24 V DC to the load when ON, load returns to 0 V DC), with integrated thermal shutdown on overcurrent/short, reverse-polarity protection on the 24 V DC supply rail, and protection for switching inductive loads (freewheel diode internally, typical B&R FET design). The 3DO486.6​ draws its logic side from the 2005 rack backplane (5 V DC internal), and its output-stage power from the external 24 V DC supply landed on the terminal block (nominal 24 V DC, operating range 18–30 V DC; the module monitors <18 V DC and flags a supply-undervoltage diagnostic).

Diagnostics are LED-rich: per-channel green = output ON, plus module-level status. Through B&R’s Automation Studio (or the 2005 CPU’s diagnostic image), the host can read per-channel ON/OFF state, supply-voltage fault, and group-level current via the 2005 backplane — useful on packaging lines where a jammed cylinder (shorted solenoid) needs fast isolation without scrolling through 32 channels with a multimeter. The 3DO486.6​ requires 2× TB718​ terminal blocks (18-pin, screw-clamp or cage-clamp, ordered separately) — one per 16-channel group — which land the 24 V DC supply (+/0 V per group) and the 32 field wires. Field wiring is 2-wire per point (module-supply → load → 0 V return, or dry-contact sensing if configured otherwise).

From a lifecycle view, the B&R 3DO486.6​ is a mid-rotation spare in any plant running B&R 2005 racks (packaging OEMs, printing presses, textile knitting/cutting, plastics extrusion, automotive tier-1 subsystem cells). The FET outputs age gracefully — no mechanic relay contacts to weld — but the terminal-block screw torque and the TB718 plastic housing are the wear items after 10+ years of thermal cycling in machine cabinets.

Technical Specifications

Main Features and Advantages

The B&R 3DO486.6​ is built for machine-level density and diagnostics, and it shows in three design choices. First, 32 outputs on a single 2005 Euro-card​ — the 2005 rack is “compact” (narrower than a full-size AC 800M S800 rack), so slot real estate is precious on packaging-OEM panels and printing-press side cabinets. By putting 32 FET outputs on one 3DO486.6, B&R lets a 4-slot 2005 CPU rack cover, say, 32 solenoid valves + 16 DI + 8 AI + the CPU in one small enclosure — something that would take two S800 slices. For machine builders (OEMs) standardizing on B&R 2005 for mid-complexity machines (banding heads, carton erectors, textile knitting carriers, plastic-blister feeds), the 3DO486.6​ is the default high-density DO.

Second, FET source-type with grouped isolation. Each group (16 ch) has its own 24 V DC supply terminal on the TB718 — so Group 1 can be fed from the panel’s main 24 V DC spur, and Group 2 from a separate 24 V DC UPS spur, or from a 24 V DC isolated supply for safety-rated loads. The galvanic isolation Group–Group means a short/fault on Group 1 won’t drag Group 2 down, and the 3DO486.6‘s thermal-shutdown per group (actually per-FET with group-sum tracking) keeps a jammed cylinder solenoid (shorted coil → 5× inrush) from cooking the whole module — the affected group current-limits, the LED flags fault, and the B&R 2005 CPU logs it. Compare this to a bare 4× 8-ch relay card where one stuck contact can weld and take out the whole bank — the FET approach on the 3DO486.6​ is “solid-state survivable.”

Third, diagnostics and ecosystem fit. Every channel has a green LED (ON), and the module exposes supply-undervoltage (<18 V DC) and output-status bits to the 2005 CPU’s process image — readable in B&R Automation Studio or via the 2005 CPU’s web/server interface. On a 32-valve packaging line, this means “valve 17 not opening despite DO bit = 1” shows up as either (a) the 3DO486.6​ Group 2 supply <18 V (loose TB718 screw on the 24 V spur → maintenance tunes that), or (b) the channel reads ON but the cylinder hasn’t moved (air fault, not electrical — maintenance goes to Mech, not Elec). That split saves hours on stoppages. The 3DO486.6​ also inherits B&R 2005’s hot-swap behavior on expansion racks (main-rack modules are typically powered down for swap; expansion-rack on some 2005 PSU configs supports live-insert — check your 2005 PSU/CPU revision), and the terminals unplug from the module front (lift the TB off the module) so a swap is: power down rack → unclip 2× → withdraw 3DO486.6​ → seat replacement → re-clip → power up → CPU re-scans I/O. Under 10 minutes.