3500/20

Bently

3500/20 multi-frame expansion rackThe BENTLY 3500/20 is a multi-frame expansion

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Product Details

3500/20 multi-frame expansion rack

The BENTLY 3500/20 is a multi-frame expansion rack (also referred to as a "Satellite Rack") in Bently Nevada’s 3500 Series Rotating Machinery Protection & Monitoring System. Unlike the single-frame 3500/10 (designed for standalone use), the 3500/20 is engineered to extend the monitoring capacity of a 3500 system—enabling centralized management of multiple racks (up to 8 total, including 1 master 3500/10 and 7 slave 3500/20s) for large-scale rotating machinery installations (e.g., multi-turbine power plants, complex compressor trains). It serves as a modular platform to house functional modules (vibration, speed, temperature, Keyphasor) while maintaining seamless data synchronization with the master rack. Below is its comprehensive detailed information:

I. Core Technical Parameters

Category	Specific Specifications
Basic Identification	- Model: 3500/20- Product Type: Multi-Frame Expansion Rack (Satellite Rack)- System Role: Slave rack for 3500 Series; expands monitoring channels by connecting to a 3500/10 master rack- Compatibility: Works with all 3500 Series functional modules (e.g., 3500/42M vibration, 3500/53 overspeed, 3500/25 Keyphasor, 3500/60 temperature)
Physical & Slot Configuration	- Dimensions: 483 mm (W) × 305 mm (D) × 229 mm (H) (19-inch rack-mountable, fits standard industrial cabinets)- Slot Quantity: 15 full-height module slots (supports up to 15 functional modules or a mix of full/half-height modules; e.g., 10 vibration modules + 3 temperature modules + 2 Keyphasor modules)- Mounting Type: 19-inch EIA rack mounting (2U height, saves cabinet space)- Weight: 7.3 kg (empty, without modules); max 15 kg (fully loaded with modules)
Power & Backplane	- Power Input: Requires external 3500/15 redundant power supply modules (2 per rack, for 1+1 redundancy); accepts +24V DC from 3500/15 modules (supports up to 20A total current for all installed modules)- Backplane Type: High-speed differential backplane (1 Gbps data rate); enables:- Module-to-module communication within the 3500/20- Data synchronization with the 3500/10 master rack via a dedicated "Frame Link" cable- Frame Link Interface: 1 x 9-pin D-sub connector (for connecting to master 3500/10 via Bently’s proprietary Frame Link cable; max distance 100 meters between racks)