BENTLY 350025 Enhanced Keying Module

Graphs and Figures

This graphical reference section includes additional information about the 3500 System.

3500 System Example

1. Power Supplies: This particular rack has an AC-powered supply in the primary (lower) position, and a DC-powered backup supply in the upper position.

2. Keylock security prevents tampering with the configuration of the monitors in the rack.

3. Transient Data Interface (TDI): Provides an interface to configuration software and to System 1 Condition Monitoring &Diagnostic software. 

It also coordinates communication between all modules in the rack.

4. Keyphasor Module: Accepts single and multi-event per-rotation signals from proximity probes and magnetic pickups installed on rotating equipment.

5. 3500/72M (Recip Rod Position) and 3500/77M (Recip Cylinder Pressure) monitors are used for condition monitoring of reciprocating compressors.

6. 60/61 Temperature Monitors.

7. 3500/42M Proximitor/Seismic vibration monitors.

8. Buffered transducer signals are provided for use with portable test instruments.

9. Unused slots are protected with “Future Expansion” covers, and are available for use with additional modules.

10. 3500/33 16-Channel Relay Module.

11. 3500/92 Modbus® Communication Gateway.

12. Standard rack for 19” EIA rail mounting

Hot Insertion

All Monitors and Power Supplies (when redundant supplies are used) can be removed or inserted when the rack is under power. 

This facilitates easier maintenance and system expansion without interruption of machinery protection functions or system operation.

Time Synchronization

The system’s real-time clock can be synchronized with external clocks, via the Communication Gateway or via

connected Bently Nevada software.

The 3500 System’s alarm and event lists then provide time/date stamps that are synchronized with alarms

and events in other process and automation equipment.

This reduces or eliminates the need for elaborate, hardwired “Sequence of Event” recorders.

API 670 Compliance When configured properly, supplied with the correct number of relay modules, and provided with an

appropriate optional display, the 3500 System complies with the latest edition of the 

American Petroleum Institute (API) Standard 670 for Machinery Protection Systems, for shaft-relative vibration, axial position,

temperature, reciprocating compressor rod drop, and casing vibration.

Alarm/Event Lists

Extensive alarm and event lists retain the 2000 most recent alarm events and 1000 most recent system

events (configuration changes, errors, etc.). 

The system’s TDI retains the lists, which provide a description of each alarm or event and a corresponding date/time stamp. 

These lists are available to the 3500/94M VGA Display module and also to the Communication Gateway module for export to process

control, historian, or other plant systems.

Display Options

Displays can range from local units mounted directly on the rack’s front panel, 

to remote displays, to completely blind monitoring systems with an as-needed HMI (Human Machine Interface) connection for configuration and information. 

Multiple displays can be connected concurrently without degrading system performance or interrupting basic machinery protection functions. 

See Graphs and Figures for more information on VGA Touch Screen display options.

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