There are still some products that have not been listed yet. For more information, please contact us. If the product model does not match the displayed picture, the actual model shall prevail. Please consult us for specific product images; We will arrange for the warehouse to take photos for confirmation. We have 76 shared warehouses worldwide, so it may take several hours to accurately respond to your message. We deeply apologize for any inconvenience caused to you. Of course, we will process your inquiry as soon as possible.

Bently Nevada 128229-01 4-Channel Internal Termination I/O Module

The Bently Nevada 128229-01 resides on the rear bulkhead of the 3500 chassis, serving as a non-isolated 4-channel signal delivery link. It acts as the primary hardware interface for front-plane monitoring cards, most notably the industry-standard 3500/42M Proximitor/Seismic Monitor. The module is fully capable of processing dynamic voltage inputs generated by proximity probes (measuring radial shaft vibration, axial thrust position, or eccentricities) as well as casing vibration sensors (such as accelerometers and moving-coil velocity transducers).

The defining asset of the 128229-01 PWA is its self-contained Internal Termination layout. Field cables arriving from machine-deck junction boxes land directly on the module's green Euro-style screw connectors. Each channel provides dedicated terminals for signal (+), power (-24 Vdc source), and common ground (COM), alongside a shield termination point to isolate electromagnetic interference (EMI). This setup provides an efficient, point-to-point wiring framework for facilities prioritizing localized cabinet terminations.

• Direct Field Wire Landing: Features built-in screw terminal blocks directly on the module plate, completely bypassing the need for separate external terminal blocks or marshalling accessories.

• Onboard Shield Terminations: Includes dedicated, ground-isolated shield termination points for each of the 4 channels, ensuring optimal noise rejection and signal grounding.

• Short-Circuit Protected Outputs: Built-in current limiting circuitry prevents a field sensor short or wiring fault from damaging the 3500 rack's internal power distribution network.

• Pure Dynamic Throughput: Routes raw sensor waveforms directly across the system backplane to ensure uncompromised data fidelity for downstream orbit, cascade, and spectrum diagnostics.

• Rugged Mechanical Retaining: Equipped with durable board-retaining screws that lock the card securely into the chassis frame, resisting industrial machine-deck vibration profiles.

• Standard Industrial Machinery Cabinets: The default choice for localized control enclosures where field instrumentation wires land directly in the primary monitoring rack cabinet.

• Steam Turbine Bearing Vibration Monitoring: Direct landing point for proximity probes tracking radial shaft dynamics across steam turbine generator sets.

• Centrifugal Gas Compressor Protection: Captures axial thrust and radial vibration trends to protect critical high-speed compressor stages.

• Balance of Plant (BOP) Fan Protection: Direct terminal interface for accelerometers or Velomitors tracking mechanical housing stress on forced-draft fans or cooling tower assemblies.

Q1: What is the main difference between the 128229-01 and the 135137-01 I/O modules?

A: The 128229-01 is an Internal Termination module, featuring built-in screw terminal blocks on its backplate for direct wire landing. The 135137-01 is an External Termination module, which lacks screw terminals on the card itself and instead uses a high-density multi-pin connector to interface with a separate external terminal block via a multi-core cable.

Q2: Does the 128229-01 card include built-in intrinsically safe (I.S.) zener barriers?

A: No. The 128229-01 is a standard, non-barrier internal termination card. For explosive environments requiring intrinsic safety parameters, you must route field lines through external DIN-rail barriers first, or switch to an internal barrier I/O module version (such as part number 135489-01).

Q3: Can I connect both proximity probes and accelerometers to this card at the same time?

A: Yes. The 128229-01 safely channels signals for all supported sensor types across its 4 slots. You can mix sensor families on a single card as long as the front-plane 3500/42M monitor card is configured via software to recognize the specific sensor type wired to each corresponding terminal channel.

Q4: Is it safe to pull or replace this rear I/O module while the 3500 rack is powered on?

A: While the module physically supports live removal, unplugging or extracting the 128229-01 under power will immediately disconnect all 4 connected sensor signals from that slot. To prevent false alarms or an accidental machine trip, you must activate the slot bypass within the 3500 Configuration Software before pulling the card.

Do you provide global shipping services?

Yes. We have local distribution centers on all continents, which can quickly transport parts to any corner of the world.

2. What payment methods and currencies do you accept?

To make your purchasing process as simple as possible, we offer multiple payment methods including bank transfer, check, and PayPal. Meanwhile, we also accept most mainstream credit and debit cards, such as Visa, Mastercard, and American Express. We can accept payments in most major currencies worldwide, but we recommend using US dollars (USD), British pounds (GBP), or euros (EUR) as a priority. Payments in other currencies may incur additional fees. All transactions are securely processed by HSBC Bank and HSBC Merchant Services.

How many parts do you currently have in stock?

We have a vast inventory of thousands of new, refurbished, and outdated automation components, including products from well-known manufacturers such as ABB and Schneider. If you cannot find the required parts, please do not worry. We work closely with a global network of professional suppliers to provide you with tailored quotes even if the part is not listed on our website.

Who can I contact if I encounter any problems?

Our experienced customer service team will handle any issues after you place your order.