# 3500/05 Instrument Frame Series Introduction The **3500/05 Instrument Frame** is a core hardware component of the Bently Nevada 3500 Machinery Protection and Monitoring System, primarily used to house, power, and provide communication backplane for system modules, ensuring coordinated operation of monitoring functions. ## 1. Core Functions – **Module Integration**: Serves as a standardized chassis to mount 3500 series functional modules (e.g., monitor modules, framework interface modules, communication modules) in fixed slots. – **Power Distribution**: Distributes stable power (typically 24V DC or 125V DC, depending on the power supply configuration) to all installed modules via an internal backplane. – **Backplane Communication**: Provides a high-speed internal communication bus (backplane) for data exchange between modules, enabling unified data collection and command transmission. – **Mechanical Protection**: Offers physical protection for internal modules, with a rugged design suitable for industrial environments (e.g., power plants, petrochemical facilities). ## 2. Key Specifications | Specification Item | Typical Parameter | |————————–|———————————————————————————–| | **Slot Quantity** | 15 standard slots (for functional modules) + dedicated slots for power supply/modules (varies by model). | | **Dimensions** | Common size: ~483mm (width, 19-inch rack-mount) × ~305mm (height) × ~406mm (depth) (varies by model). | | **Power Supply Requirement** | Supports external power input (e.g., 100-240V AC or 24-125V DC) via matching 3500 power supply modules. | | **Operating Environment** | Temperature: 0°C – 60°C; Humidity: 5% – 95% (non-condensing), suitable for industrial on-site installation. | ## 3. Typical Module Configuration (Slot Allocation) Modules are installed in specific slots to ensure normal communication and power supply, with a common configuration as follows: – **Slot 1**: Framework Interface Module (e.g., 3500/20), responsible for communication between the frame and the configuration computer/upper system. – **Slots 2-14**: Monitor Modules (e.g., 3500/40 vibration monitor, 3500/42 position monitor), used to collect and process machinery monitoring data (vibration, shaft position, temperature, etc.). – **Slot 15**: Communication Module (e.g., 3500/92 Ethernet module) or redundant framework interface module, enabling remote data transmission or system redundancy. ## 4. Application Scenarios It is widely used in critical rotating machinery monitoring scenarios, such as: – Turbines, generators, and compressors in power plants and petrochemical plants. – Centrifugal pumps and fans in industrial production lines. – Other high-value rotating equipment requiring real-time fault diagnosis and protection. ## 5. Key Notes for Use – **Module Compatibility**: Only 3500 series dedicated modules can be installed; non-matching modules may cause communication failures or equipment damage. – **Configuration Precondition**: Before powering on, ensure the frame’s front-panel **Configuration Key-Switch** is set to the “Run” state (set to “Program” only when downloading configurations via software). – **Redundancy Option**: For high-reliability requirements, redundant power supply modules and framework interface modules can be configured to avoid system downtime due to single-module failures.
