Product Overview

The Bently Nevada 135785-02 is a high-visibility, backlighted display unit engineered specifically for the 3500/93 System Display series. This module provides a local, real-time visualization interface for the 3500 Machinery Protection System, allowing operators to view critical vibration, position, and temperature data directly at the machine train or control cabinet. By translating complex backplane data into a clear, readable format, the 135785-02 ensures that maintenance personnel can perform immediate onsite diagnostics without requiring a remote workstation.

Designed for high-reliability industrial service, this display unit features integrated relay control logic to enhance machinery safety. The module is built to withstand rigorous conditions in power generation and petrochemical facilities, offering reinforced isolation and a wide operating temperature range. The backlighting feature ensures that critical machine health metrics remain visible in low-light environments, such as turbine halls or outdoor compressor stations, supporting continuous surveillance of high-value rotating assets.

High-Integrity Protection and Logic Features

The 3500/93 135785-02 is equipped with sophisticated relay functionality, typically featuring eight configurable Form-C relay outputs. These outputs can be programmed to respond to specific alarm or danger conditions, providing a physical hardware link for emergency shutdowns or local alarm annunciation. The unit utilizes advanced contact arc suppression technology, which significantly extends the operational life of the internal relays and minimizes the risk of signal failure during high-cycle industrial processes.

For proactive asset management, the display unit includes intelligent monitoring of its own internal components. This includes predictive wear monitoring for the relay contacts and self-diagnostic routines to ensure display accuracy. The intuitive interface is designed to prevent unauthorized configuration changes while providing rapid access to the event list and current channel statuses, making it an essential tool for Turbine Supervisory Instrumentation (TSI) applications.

Technical Specifications

• Manufacturer: Bently Nevada

• Model Number: 3500/93

• Order Number: 135785-02

• Component Type: Display Unit (Backlighted)

• Relay Configuration: 8 Configurable Form-C (SPDT) Relays

• Switching Capacity: 5A at 24 VDC / 250 VAC

• Isolation Rating: 1500V AC (between contacts and coil)

• Operating Temperature: -40°C to +70°C (-40°F to +158°F)

• Weight: 1.84 kg

• Dimensions (W x H x D): 41.2 cm x 20.3 cm x 3 cm

• HS Code: 8537101190

• System Series: 3500 Machinery Protection System

• Manufacturing Origin: USA

Core Operational Advantages

• High Visibility Interface: Backlit screen ensures clear data readout in all lighting conditions for improved operator awareness.

• Fail-Safe Relay Logic: Integrated high-capacity relays provide robust mechanical interlocking for critical machine protection.

• Predictive Diagnostics: Internal monitoring tracks relay health to allow for planned maintenance before hardware failure occurs.

• Ruggedized Design: Engineered for 24/7 service in harsh oil and gas, nuclear, and pipeline environments.