Hersteller: Bently Nevada
Produkt-Nr.: 3500/50-04-00
Herkunftsland:Vereinigte Staaten
Produkttyp: Tachometer Modules
Zahlung: T/T, Western Union
Gewicht: 320g
Abmessungen: 241.3 mm x 24.4 mm x 241.8 mm
Versandhafen: Xiamen
Garantie: 12 Monate
Processing rotational speed signals within the 3500 machinery protection architecture, the Bently Nevada 3500/50-04-00 operates as a high-precision tachometer module designed to accept input from proximity probes or magnetic pickups. This module measures shaft rotational speed, rotor acceleration, and reverse rotation, conditioning these inputs to drive alarms and provide critical overspeed protection. The 3500/50-04-00 model variant features an I/O module with internal barriers and internal terminations, providing built-in intrinsic safety for transducers located in hazardous industrial environments without requiring external barrier cabinets.
| Option Code | Description |
|---|---|
| 3500/50 | Tachometer Module (Main Monitor Board) |
| -04 | I/O Module with Internal Barriers and Internal Terminations |
| -00 | Agency Approval: None / Pending |
| Parameter | Specification Value |
|---|---|
| Manufacturer | Bently Nevada |
| Part Number | 3500/50-04-00 |
| Module Type | Tachometer Module with Internal Barriers |
| I/O Configuration | Internal Terminations, Internal Safety Barriers |
| Main Board Dimensions | 241.3 mm x 24.4 mm x 241.8 mm |
| I/O Module Dimensions | 241.3 mm x 24.4 mm x 163.1 mm |
| Module Weight | 1.28 kg |
| Shipping Weight (Calculated) | 3.00 kg |
| Country of Origin | United States |
| Terminal Group | Function Assignment |
|---|---|
| Ch 1 / Ch 2 / Ch 3 / Ch 4 | Independent speed/proximity probe input channels |
| PWR / COM / SIG / SHLD | Transducer power supply (-24 Vdc), common return, input signal, and shield ground |
| REC OUT | Buffered transducer analog output signals for external diagnostic recorders |
The 3500/50-04-00 with internal barriers cannot be hot-swapped into a backplane slot configured for non-barrier I/O (such as the standard 3500/50-01-00) without first updating the rack configuration. Attempting to run a mismatch between physical I/O type and software definitions triggers a configuration fault in the 3500 Rack Interface Module (RIM).
Internal barrier loops introduce a fixed, series current-limiting resistance. When pairing this module with long field cable runs (exceeding 300 meters), calculate the total loop resistance to ensure the signal voltage does not drop below the minimum trigger threshold of the tachometer input circuitry, especially at high rotational frequencies.
Always verify the transducer type (Proximitor vs. Magnetic Pickup) using the 3500 Configuration Software before applying power to the field loop. Selecting the incorrect sensor type can cause the internal barrier to trip or limit current, leading to persistent "Not OK" status indications on the tachometer front panel.
Isolate and de-energize the entire 3500 instrument rack and all associated field loops before inserting or removing the 3500/50-04-00 module. Failure to de-energize can damage sensitive internal barrier circuitry and compromise explosive-area safety ratings.
Verify that the physical keying pegs on the rear of the 3500 rack correspond to the correct option slots for the Tachometer Module and its I/O baseboard.
Slide the main monitor board into the front guide rails of the rack, and secure it firmly using the captive chassis screws.
Mount the internal barrier I/O module into the corresponding slot on the rear panel of the rack, securing the module with its mounting fasteners.
Connect field wiring to the screw terminal blocks, ensuring that transducer shields are terminated according to Bently Nevada grounding standards.
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| Country of origin |
Vereinigte Staaten
|
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