Bently 330500-00-02

3. Technical Specifications

Input Parameters

• Input Type: Accepts 4-20 mA DC analog signals from Bently 3300 Series signal conditioners; supports up to 8 independent, configurable input channels (compatible with vibration, displacement, speed, and differential expansion measurements).
• Input Scalability: Each channel is independently scalable to user-defined ranges (e.g., 0-600 μm for radial vibration, 0-20 mm for axial displacement, 0-4500 RPM for rotational speed, 0-5 mm for differential expansion).
• Input Accuracy: ±0.08% of full scale (at 25°C), with a temperature drift of ≤0.01% of full scale per °C (from -40°C to +70°C), ensuring precise signal conversion even in temperature-fluctuating environments.
• Input Isolation: 1000 V AC (rms) between channels and between inputs and outputs, eliminating cross-talk and electrical interference from nearby power cables or industrial equipment.

Output Parameters

• Relay Outputs: 8 Form C (SPDT) relays (one per input channel), with enhanced contact rating of 3 A @ 250 V AC / 30 V DC; contact life extended to 200,000 operations (at rated load). Relays are configurable for alarm (warning) or trip (emergency shutdown) functions.
• Analog Outputs: 8 independent 4-20 mA DC retransmission outputs (one per input channel), with output accuracy of ±0.08% of full scale. These outputs mirror scaled input signals for seamless integration with DCS/SCADA systems.
• Digital Communication: Dual communication ports—RS-485 (Modbus RTU) and 10/100 Ethernet (Modbus TCP/IP)—for high-speed data transmission. Baud rate for RS-485: 9600-115200 bps; Ethernet supports full-duplex operation and remote configuration.

Display & User Interface

• Display Type: 5.7-inch color TFT LCD (640×480 resolution), with high-brightness (500 nits) and anti-glare coating for visibility in direct sunlight (e.g., outdoor control cabinets) or low-light environments.
• Display Capabilities: Real-time parameter values (numeric + graphical trends), channel status indicators (green = normal, yellow = alarm, red = trip), fault codes, and customizable dashboards. Supports up to 10 languages (English, Spanish, French, German, Chinese, Japanese, Russian, Portuguese, Arabic, Korean).
• User Controls: Industrial-grade membrane keypad with tactile feedback, plus a jog dial for quick navigation. Includes dedicated buttons for alarm acknowledgment, system reset, and display brightness adjustment.

Power Requirements

• Power Input: 24 V DC ±15% (nominal); optional 110/220 V AC ±10% (with integrated, isolated power supply module).
• Power Consumption: Maximum 25 W (all channels active, relays energized, display at full brightness).
• Power Protection: Multi-stage protection against overvoltage (up to 40 V DC), reverse polarity, and voltage surges (compliant with IEC 61000-4-5).

Physical & Environmental Parameters

• Dimensions: 190 mm (width) × 132 mm (height) × 230 mm (depth); designed for 19-inch rack mounting (3U height) with front-panel locking screws for secure installation.
• Operating Temperature Range: -40°C to +75°C, expanding usability in extreme environments (e.g., desert power plants, arctic oil refineries).
• Humidity Resistance: 5% to 95% relative humidity (non-condensing), with enhanced moisture sealing to prevent corrosion in damp settings (e.g., offshore platforms, pulp mills).
• Shock & Vibration Resistance: Compliant with IEC 60068-2-27 (100 g shock, 6 ms duration) and IEC 60068-2-6 (10 g acceleration, 10-2000 Hz), ensuring stability under intense mechanical stress from rotating machinery.
• Ingress Protection (IP) Rating: IP30 (front panel), protecting against solid objects ≥2.5 mm (e.g., small tools, dust particles) and reducing dust accumulation on internal components.

Compliance & Certifications

• Electrical Safety: UL 508 (USA), CSA C22.2 No. 14 (Canada), IEC 61010-1 (International), and GB 4793.1 (China).
• Hazardous Locations: ATEX Zone 2 (II 3G Ex nA IIC T5 Ga) and IECEx Zone 2 (Ex nA IIC T5 Ga), approved for use in environments with flammable gases/vapors (e.g., refineries, chemical plants) with higher temperature classifications.
• EMC Compliance: EN 61326-1 (industrial environments) and FCC Part 15 Class A, minimizing electromagnetic emissions and enhancing immunity to EMI/RFI from motors or variable frequency drives (VFDs).
• Environmental Compliance: RoHS 2.0 (EU Directive 2011/65/EU) and REACH (EU Regulation 1907/2006), free of restricted substances and hazardous materials.

4. Functional Features

• Enhanced 8-Channel Monitoring Flexibility: Supports up to 8 input channels, each configurable for vibration, axial displacement, rotational speed, or differential expansion. This versatility allows it to monitor diverse machinery setups—for example, 4 vibration points on a gas turbine, 2 axial displacement points on a generator, and 2 speed points on a pump—without requiring additional monitor modules.
• Superior Measurement Precision: Delivers input accuracy of ±0.08% of full scale and minimal temperature drift (≤0.01% of full scale per °C), ensuring raw signals from conditioners are converted into highly reliable data. This precision is critical for detecting ultra-subtle machinery anomalies—such as 0.005 mm changes in shaft displacement or 0.05 Hz variations in vibration frequency—that signal early-stage issues like bearing degradation, rotor imbalance, or shaft misalignment.
• Advanced Alarm & Trip Management: Each channel’s Form C relay (3 A rating) supports customizable threshold logic, including dual-stage alarms (warning + critical) and time-delayed trips (to avoid false shutdowns from transient spikes). Relays can be configured for latching (manual reset) or non-latching (auto-reset) modes, and the module stores a 100-event alarm log (with timestamps) for post-incident analysis.
• Dual Communication & Remote Management: The combination of RS-485 (Modbus RTU) and Ethernet (Modbus TCP/IP) ports enables seamless integration with DCS, SCADA, or condition monitoring software (e.g., Bently Nevada’s System 1). Ethernet support allows for remote configuration, real-time data streaming, and historical data logging (up to 1 year of trend data at 1-minute intervals), empowering predictive maintenance strategies like vibration trend analysis.
• High-Visibility, Customizable Display: The 5.7-inch high-brightness, anti-glare LCD provides clear visualization of machinery health, even in harsh lighting conditions. Users can create custom dashboards (e.g., grouping turbine-related channels or pump-related channels) and view real-time graphical trends (up to 24 hours) to identify gradual parameter changes—such as a slow increase in pump vibration that signals impending bearing failure.
• Robust Environmental Durability: Operates reliably in temperatures from -40°C to +75°C, humidity from 5% to 95% RH (non-condensing), and under extreme shock/vibration. Its enhanced moisture sealing and corrosion-resistant front panel ensure performance in harsh settings, including offshore drilling platforms (saltwater exposure), steel mills (dust and heat), and desert power plants (extreme temperature swings).
• Comprehensive Diagnostics & Fault Reporting: Integrates advanced self-diagnostics to monitor internal components (power supply, display, communication ports) and external connections (signal conditioner inputs, relay outputs). Faults—such as open input wires, shorted analog outputs, or Ethernet connection loss—trigger on-screen fault codes, LED alerts, and automated notifications via the communication port. The module also performs periodic self-tests (every 5 seconds) to ensure continuous reliability.
• User-Centric Operation: The industrial-grade keypad and jog dial enable intuitive navigation, even while wearing gloves (common in manufacturing or mining environments). Basic configuration (e.g., setting measurement ranges, alarm thresholds) can be completed on-site in minutes, while advanced features—like dashboard customization and data log retrieval—are accessible via the module’s interface or Bently’s proprietary configuration software.

5. Application Scenarios

• Power Generation Industry:
  • Deployed in coal-fired, natural gas, and nuclear power plants to monitor steam turbines, gas turbines, and generators. It aggregates 8 channels of data—4 for radial vibration (tracking rotor balance), 2 for axial displacement (preventing rotor rub), and 2 for rotational speed (ensuring synchronous operation). The module’s Ethernet port feeds real-time data to the plant’s DCS, while its high-temperature tolerance (+75°C) allows installation near turbine halls. Trip relays trigger emergency shutdowns if vibration exceeds 300 μm (turbine critical limit), preventing catastrophic failure and unplanned power outages.
• Oil & Gas Industry:
  • Used in offshore drilling platforms, onshore refineries, and pipeline compressor stations. It monitors centrifugal compressors, reciprocating pumps, and gearboxes by processing 8 channels of vibration and speed data. ATEX/IECEx T5 certification (higher temperature tolerance) makes it suitable for refinery process units where ambient temperatures exceed 60°C. The Ethernet port enables remote monitoring via SCADA, allowing operators to track pipeline compressor health from onshore control centers. Alarm relays alert teams to abnormal conditions—such as a sudden spike in compressor vibration (indicating liquid slugging)—to prevent equipment damage.
• Petrochemical Industry:
  • Integrated into ethylene crackers, polymer reactors, and process pumps. It tracks 6 channels of vibration (on reactor agitators and pump shafts) and 2 channels of differential expansion (on ethylene cracker turbines). The module’s graphical trend display helps operators identify gradual changes—like a slow increase in agitator vibration that signals impeller fouling—allowing scheduled cleaning instead of unplanned shutdowns. Its moisture-resistant design ensures reliability in outdoor pump stations, where rain and humidity are common.
• Metallurgical Industry:
  • Applied in steel mills and aluminum smelters to monitor rolling mill drives, fan motors, and hydraulic pumps. It consolidates 8 channels of vibration data from rolling mill drives—critical for detecting gearbox wear or bearing failure that could disrupt steel production. The module’s shock resistance (100 g) withstands the intense mechanical stress from rolling mill operations, while its dust-resistant IP30 rating prevents particle accumulation. Alarm logs (100 events) enable maintenance teams to review past anomalies and optimize maintenance schedules.
• Marine & Shipping Industry:
  • Installed on LNG tankers, cargo ships, and offshore support vessels to monitor marine diesel engines, propeller shafts, and auxiliary pumps. It processes 4 channels of engine vibration, 2 channels of propeller shaft displacement, and 2 channels of pump speed. Its wide temperature range (-40°C to +75°C) supports operation in arctic (LNG transport) and tropical (cargo shipping) waters, while its vibration resistance ensures reliability during rough seas. The module’s Ethernet port allows crew to share data with onshore maintenance teams, enabling remote troubleshooting and predictive part replacement.
• Heavy Manufacturing & Mining:
  • Used in cement plants, mining crushers, and conveyor systems. It consolidates 8 channels of vibration data from crusher shafts (4 channels) and conveyor motor bearings (4 channels). The module’s graphical trend display helps identify gradual increases in crusher vibration—signaling jaw wear—and its relay outputs trigger alarms to schedule maintenance before the crusher jams (a costly issue in mining operations). Its glove-friendly keypad allows use in dusty, high-noise mining environments, while its corrosion-resistant design withstands cement plant humidity and chemical exposure.
• Aerospace & Defense Industry:
  • Employed in ground-based gas turbine generators (used for aircraft testing or military base power) to monitor vibration, displacement, and speed. Its high precision (±0.08% accuracy) ensures compliance with strict aerospace quality standards, while its robust shock resistance (100 g) supports operation in military testing facilities. The module’s Ethernet port enables integration with test control systems, allowing engineers to log data during turbine performance tests and analyze results for design optimization.