Application Scenarios
In a steel rolling mill’s main pulpit, the operator station hangs from a Rittal CP-L support arm system, carrying an MP 377 PRO 15″ Touch that runs the descaling and stand-gap HMI screens. The original basic adapter had been lost during a previous panel swap three years ago, and maintenance had jury-rigged the PRO device to the arm head with generic spacers — a setup that developed a persistent vibration-induced micro-crack in the PRO device’s rear mounting bosses, eventually triggering an “internal mounting stress” alarm on the MP 377 PRO’s self-diagnostics. The fix wasn’t a new HMI; it was sourcing the correct 6AV7674-0KA00-0AA0. Once the genuine basic adapter was bolted between the PRO device and the CP-L head using the included 4 screws, the load path became uniform again — the adapter’s drilling pattern exactly matches both the PRO device’s rear flange and the Rittal CP-L coupler, so torque distributes evenly across all four mounting points instead of concentrating on two. The 6AV7674-0KA00-0AA0 restored the designed mechanical interface in 20 minutes, and the stress-alarm cleared on the next boot. It’s a small part, but on a €4,000+ PRO panel swinging on a support arm in a vibrating pulpit, the basic adapter is the difference between a clean 10-year mount and a cracked rear housing.
h2 Parameter
| Main Parameters | Value/Description |
|---|---|
| Product Model | 6AV7674-0KA00-0AA0 |
| Manufacturer | Siemens AG (SIMATIC HMI) |
| Product Category | Basic Adapter / Fixing Element (Mounting Accessory) |
| Target Devices | All SIMATIC HMI “fully enclosed” PRO devices, 4:3 format (e.g., MP 377 PRO 15″, 19″) |
| Finish / Color | Dark gray (matched to 4:3 PRO device housings) |
| Scope of Supply | 1 × basic adapter + 4 × fastening screws |
| Mechanical Interface | Rear flange mates PRO device; front drill pattern mates support arm heads & VESA plates |
| Compatible Arm Systems | Rittal CP-L / CP-S, Bernstein CS-3000, Rose GTN II / GT48-2, Rolec tarAPlus / Quadro, Haseke |
| Compatible VESA | VESA 75 (6AV7674-0KE00-0AA0) and VESA 100 (6AV7674-0KD00-0AA0) via adapter plates |
| Mounting Method | 4-screw bolt pattern, rear of PRO device → basic adapter → support arm head / VESA plate |
| Spare Part Status | Orderable separately (also ships standard in 4:3 PRO device cartons) |
h2 Technical Principles and Innovative Values
Innovation Point 1: Standardized Mechanical Middleman for Multi-Vendor Arm Systems. The 6AV7674-0KA00-0AA0 exists because Siemens PRO device rear flanges don’t directly match any single support arm vendor’s head pattern. The adapter carries Siemens’s PRO-device pattern on one side and a “generic coupler” drill pattern on the other, so Rittal CP-L, Bernstein CS-3000, Rose GTN II, Rolec tarAPlus — all can bolt up without custom machining. One SKU decouples HMI choice from arm-choice.
Innovation Point 2: 4:3 vs 16:9 Design Split with Color Coding. Siemens ships the 6AV7674-0KA00-0AA0 (dark gray) with 4:3 PRO devices and the 6AV7674-1KA00-0AA0 (silver, RAL 9006) with 16:9 PRO devices — the color is matched to the respective PRO housing so the assembled look is seamless. Mixing them is cosmetically off but mechanically functional; knowing which one your PRO device needs avoids the “silver adapter behind a dark-gray 4:3 PRO” mismatch that procurement sometimes ships.
Innovation Point 3: Included Fasteners, Correct Length. The 4 screws in the 6AV7674-0KA00-0AA0 bag are length-matched to the PRO device’s rear boss depth — not random M4s from a bin. Using longer generic screws risks bottoming into the PRO device’s internal electronics cavity; the included set removes that guesswork. For a €4–6K PRO panel, that detail matters.
h2 Application Cases and Industry Value
A shipbuilder in Northern Europe outfitted bridge-wing control stations on a series of LNG carriers with MP 377 PRO 19″ Touch panels mounted on Rolec tarAPlus support arms. During dry-dock commissioning, one panel’s original basic adapter was misplaced by the hull-outfitting crew, and the integrator initially substituted a generic VESA spacer plate. Two months into sea trials, the PRO 19″ developed hairline cracks around two of the four rear mounting bosses — the generic plate’s drill pattern was offset by ~3 mm, inducing torsional load on the housing every time the bridge-wing door slammed in rough seas. The fix was sourcing four Siemens 6AV7674-0KA00-0AA0 units (one per bridge-wing station) and re-mounting: the genuine adapter’s pattern aligned perfectly, the Rolec tarAPlus head mated without shims, and the crack propagation stopped — the panels cleared their structural-health checks at the next dry-dock 18 months later. The takeaway: on marine / vibrating / cantilever-arm mounts, the 6AV7674-0KA00-0AA0 isn’t optional dressing — it’s the engineered load-path the PRO device was validated with.
h2 Related Product Combination Solutions
The 6AV7674-0KA00-0AA0 sits in the PRO fixing-elements family. These are the siblings and add-ons you’ll typically spec alongside it:
- 6AV7674-0KB00-0AA0 – Adapter set PLUS for Bernstein CS-3000 Coupler 48 / Rolec tarAPlus / Rittal CP-S / Rose GT48-2 — direct-bolt option if you skip the basic adapter and go coupler-to-device.
- 6AV7674-0KC00-0AA0 – Adapter set CP-L for Rittal CP-L support arm system, same idea for Rittal’s heavier-duty arm.
- 6AV7674-0KD00-0AA0 – Adapter plate VESA 100 for PRO devices, bolts to the 6AV7674-0KA00-0AA0 when your pedestal is VESA 100.
- 6AV7674-0KE00-0AA0 – Adapter plate VESA 75 for PRO devices, the VESA 75 counterpart.
- 6AV7674-1KA00-0AA0 – Basic adapter silver (RAL 9006) for 16:9 PRO devices — the 6AV7674-0KA00-0AA0 is the 4:3/dark-gray sibling; pick by your PRO device format.
- 6AV7674-1LB50-0AA0 – Exchange adapter for PRO devices, adds 25.5 mm spacing between PRO device and Extension Unit — useful when you need to pop the PRO off the arm for cleaning without opening the Extension Unit behind it.
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