Introduction
The assembly 3500/42-09-00 140471-01 is a Turbine Supervisory Monitor (TSM) and its associated DC Input / Relay Driver Card for the Bently Nevada 3500 Machinery Protection System. The 3500/42 is a versatile, programmable monitor chassis designed to handle a variety of transducer inputs. Paired with the 140471-01 input card, this assembly is specifically configured to interface with DC voltage/current signals and can also be used to drive external relays or indicators. This setup allows the 3500 system to monitor a wide range of process variables (like pressure or temperature from transmitters) and to provide auxiliary control outputs, making it a highly flexible component for complex machinery protection schemes.
Parameters / Specifications
The following table outlines the key technical parameters for this monitoring assembly.
| Parameter | Specification |
|---|---|
| Assembly Designation | 3500/42-09-00 (Monitor) & 140471-01 (Input Card) |
| Description | Turbine Supervisory Monitor with DC Input / Relay Driver Card |
| Monitor: 3500/42-09-00 | |
| Physical Dimensions (H x W x D) | Approx. 190 mm x 40 mm x 120 mm (Standard 3500 Series frame slot) |
| Weight (Monitor) | Approx. 0.5 kg (1.1 lb) |
| Primary Function | Programmable Monitor for Analog and Discrete Signals |
| Input Channels | Configurable based on installed input cards |
| Power Supply | Powered by the 3500 rack |
| Operating Temperature | 0°C to +65°C (32°F to 149°F) |
| Input Card: 140471-01 | |
| Description | DC Input / Relay Driver Card |
| Compatible Inputs | • 4-20 mA DC signals (Process Transmitters) • 0-10 VDC signals • Other DC voltage/current ranges (software configurable) |
| Output Capability | Form-C relay driver outputs (to power external relays, lamps, etc.) |
| Key Measurements | Pressure, Temperature, Flow, Level, and other custom process variables |
| Total Assembly Weight | Approx. 0.6 kg (1.32 lb) |
*Note: The specific configuration, including input type, range, scaling, and the function of the relay outputs, is defined by the "-09-00" suffix and the system's software setup. The 140471-01 card provides high flexibility for both monitoring and control tasks.*
Application Scenarios
This flexible assembly is used for integrating process monitoring and auxiliary control functions into the machinery protection system.
Process Parameter Monitoring:
Used to monitor critical process values such as bearing oil pressure, seal gas differential pressure, or cooler water temperature by interfacing with 4-20 mA transmitters, bringing these signals into the centralized protection system.
Auxiliary System Control and Annunciation:
The relay driver outputs can be used to activate external alarms, start standby pumps, or open solenoid valves based on custom logic within the 3500 system, providing integrated control for auxiliary systems.
Customized Machinery Protection Logic:
Enables the creation of complex shutdown or alarm sequences that require both vibration data (from other modules) and process data (from this module), such as tripping a compressor on high vibration AND high discharge temperature.
Interface with Third-Party Systems:
Acts as a gateway to bring signals from other control or monitoring systems (e.g., a separate PLC) into the 3500 system for centralized alarming, data collection, and display on the operator interface.
OEM-Specific Monitoring and Control:
Often specified by Original Equipment Manufacturers (OEMs) for built-in, customized monitoring and control functions on their equipment, leveraging the programmability of the 3500/42 monitor and the versatility of the 140471-01 card.
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