Yokogawa 3500/20 125744-02 with Power Supply & I/O Module Card Pack 135031-01 - Rack Interface Module
Description:
The Yokogawa 3500/20 125744-02 is a Rack Interface Module that operates on the specific Power Supply & I/O Module Card Pack 135031-01. This combination is the central nervous system and communication hub for a Yokogawa 3500 Machinery Management System rack. It is a mandatory module that occupies the left-most slot (Slot 0) in the rack. Its primary functions are to manage the rack's internal communications, provide the system's internal timing (clock) signals, handle all external communications with a plant's control system (via analog and discrete I/O), and interface with external systems like engineering workstations for configuration. It also monitors the health of the redundant power supplies and other modules within the rack.
Specifications / Parameters
| Parameter | Specification |
|---|---|
| Model / Part Number | 3500/20 125744-02 (Module) & 135031-01 (Power Supply & I/O Card Pack) |
| Product Type | Rack Interface Module |
| Rack Compatibility | Yokogawa 3500 Series Rack (Must be installed in Slot 0) |
| Configuration | Requires the module (125744-02) to be installed on the dedicated Power Supply & I/O card pack (135031-01). |
| Key Functions | • Rack Controller and System Synchronization • External Communication Gateway • Analog & Discrete I/O Interface • Power Supply Monitoring |
| Communications | Typically includes ports for: • Keyphasor® input • RS-232/422/485 for configuration and external systems • Relay output for rack fault |
| Analog Outputs | Provides buffered 4-20 mA outputs representing monitored parameters from other modules in the rack. |
| Module Slots | Occupies a single slot (Slot 0) in a 3500 series rack. |
| Dimensions (H x W) | Standard 3500 Module Size: Approximately 132 mm (H) x 62 mm (W) |
| Depth | Varies with rack and connector. |
| Weight | Approximately 0.6 kg (1.3 lb) (for the module and card pack assembly) |
*Note: For mission-critical applications, always verify dimensions, weight, and technical specifications against the latest official Yokogawa 3500/20 data sheet or manual.*
Application Scenarios
The 3500/20 RIM is a foundational component in every 3500 system installation. Its application is universal and critical for system integration:
System Integration and Communication Hub:
Used in every 3500 rack to act as the gateway, allowing the rack to communicate with a plant's Distributed Control System (DCS), PLC, or a dedicated workstation running configuration and monitoring software (e.g., Yokogawa's Engineering Data Management software).
Plant-Wide Monitoring and Control:
Provides buffered 4-20 mA analog outputs from critical machine parameters (e.g., overall vibration, temperature) to the plant DCS, allowing operators to see real-time machine health alongside their process data.
System Health and Diagnostics:
Continuously monitors the status of all modules and the redundant power supplies within its rack. It can trigger a "Rack Fault" alarm to alert personnel of any internal hardware problems, ensuring the integrity of the entire protection system.
Data Acquisition and Historical Recording:
Serves as the primary data conduit for systems that collect and record machinery data for historical analysis, trend monitoring, and predictive maintenance programs.
Critical Machinery Protection Systems:
An essential component in any installation, from a single rack protecting a compressor to multiple racks protecting an entire turbine-generator train in a power plant or refinery. It ensures the protection system is not an isolated "island" but an integrated part of the plant's operational and safety infrastructure.
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