Bently Nevada 3500/50 133442-01 Tachometer Module

Bently Nevada 3500/50 133442-01 Tachometer Module

The Bently Nevada 3500/50 133442-01, also cataloged as the 3500/50M I/O Module, operates as a dedicated hardware component for rotative speed, acceleration, and direction monitoring within 3500 Machinery Protection System platforms.

Hardware Specifications

Mechanical Monitoring and TSI Characteristics

The Bently Nevada 3500/50 133442-01 provides 2-channel signal processing for proximity probes and magnetic pickups. It enables critical rotor dynamics analysis by calculating shaft rotative speed, acceleration, and direction. The module supports cross-talk suppression by allowing software-defined alarm setpoints, including speed bands and zero speed notification. Furthermore, the unit can be configured to broadcast conditioned Keyphasor signals across the 3500 rack backplane, eliminating the need for standalone Keyphasor modules. The hardware includes a peak hold feature to capture maximum transient speed and reverse rotation events for detailed post-event analysis.

Frequently Asked Questions

Q: Can the 3500/50M module function as a Keyphasor signal source?

A: Yes, the module can be configured to condition and provide Keyphasor signals to the 3500 rack backplane for shared use by other monitor modules.

Q: Is this module capable of detecting reverse rotation?

A: Yes, the module supports reverse rotation notification and can store the peak number of reverse rotations reached in the peak hold register.

Field Installation Guidelines

• Module Slotting: Install the module in the designated rack slots as defined by the 3500 system configuration software to ensure proper backplane communication.
• Terminal Wiring: Utilize the internal terminations to connect probe or magnetic pickup inputs. Ensure shielded cable integrity is maintained to prevent electrical noise from influencing speed calculations.
• Power Verification: Confirm the transducer power supply delivers 24 Vdc to the sensors, verifying voltage compliance within the 0 to +12 Vdc signal range required for stable input.
• Configuration: Utilize the 3500 Rack Configuration software to map the specific alarm setpoints and verify input scaling before commissioning the monitored machine.