Configured for intrinsic safety grounding in machinery protection networks, the Bently Nevada 3500/04 136719-01 128275-01 (3500/04 136719-01 128275-01 Earthing Module) executes direct physical electrical earthing and internal barrier connection across the 3500 rack backplane.

Model Suffix Decomposition

• 3500/04: Base platform designation for internal barriers and earthing components.
• 136719-01: Specific part identifier for the Earthing I/O Module configuration.
• 128275-01: Designates the 9-1/2 in slot cover accessory for future rack expansion.

Hardware Specifications

Rotor Dynamics And Signal Accuracy

• Bandwidth Performance: Delivers clean signal transmission across a frequency bandwidth of 30 kHz.
• Amplitude Precision: Maintains an amplitude accuracy of 3% at 10 kHz, and ranges from -15% to +10% at 30 kHz.
• Phase Response: Exhibits a stable phase accuracy of -11 deg at 10 kHz to preserve dynamic rotor measurement timing.
• Transient Protection: Integrates intrinsic safety grounding paths to shield sensitive vibration monitoring circuits from hazardous electrical surges.

Bill Of Delivery

• 1 x 136719-01 Earthing I/O Module
• 1 x 128275-01F 9-1/2 in Slot Cover for future expansion

Mechanical Mounting And Grounding Guidelines

• Slot Allocation: Install the module exclusively in a dedicated general-purpose monitor slot, avoiding power supply or rack interface slots.
• Rack Density Adjustment: Account for rack capacity reduction, as installing this earthing module limits a standard 19-inch chassis to 13 active monitor positions.
• Module Grouping: Position all internal barrier I/O modules in adjacent slots to simplify field wiring and maintain accessible maintenance pathways.
• Backplane Connection: Ensure the module seats firmly into the backplane to secure the intrinsic safety earth connection without signal interruption.

Frequently Asked Questions

• Question: What is the primary function of the 3500/04 earthing module?

  Answer: It establishes the intrinsic safety earth connection through the 3500 system backplane for protected transducer loops.

• Question: Does the module occupy a standard monitor slot space?

  Answer: Yes, it requires a dedicated general-purpose monitor slot within the rack chassis.

• Question: How does this module affect the overall rack capacity?

  Answer: Its installation reduces the maximum number of available monitor positions in a 19-inch rack from 14 to 13.

• Question: What is the specified bandwidth performance of the circuitry?

  Answer: The module operates efficiently across a verified bandwidth of 30 kHz.

• Question: What is the amplitude accuracy rating at 10 kHz?

  Answer: It maintains a strict amplitude accuracy of 3% at the 10 kHz frequency point.

• Question: What is the operating temperature range for this hardware?

  Answer: The unit is rated to function reliably from 0 deg C to +65 deg C.

• Question: What component is included alongside the earthing I/O module?

  Answer: The package contains an associated 9-1/2 in slot cover designated for future rack expansion.

• Question: Can standard and internal barrier monitors coexist in the same rack?

  Answer: Yes, standard and barrier-equipped modules can reside within the same 3500 enclosure system.