BENTLY 125768-01 Rack Interface I/O Module

Power Supply

The 3500/15 Power Supply can be ordered for ac or dc input power, providing compatibility with voltage

sources worldwide. Line noise filters are standard. The 3500 Rack can operate from a single supply, or

dual supplies can be used to provide redundancy for situations that cannot tolerate power interruption.

Dual supplies reside in the upper and lower positions of the left-most rack slot. Redundant supplies

can use separate voltage sources. For example, the primary (lower) supply can operate with 120 Vac

power while the backup (upper) supply can be powered from an uninterruptible 24 Vdc source.

Each supply can individually provide power to the entire rack and its modules. When redundant

supplies are used, the lower supply acts as primary power for the rack while the upper supply acts as a

backup, ready to instantly and automatically operate as the primary rack supply without interrupting

rack functions should the primary supply fail.

The 3500/15 Power Supply module has self-monitoring functions that allow it to determine if all its

output voltages are within specifications. The module annunciates this via a green Supply OK LED on

the power supply’s front panel.

Description

The 3500 System provides continuous, online monitoring suitable for

machinery protection applications, and is designed to meet the

requirements of the American Petroleum Institute’s API 670 standard

for such systems. The system’s modular rack-based design includes

the following components:

l 3500/05 Instrument Rack (required)

l One or two 3500/15 Power Supplies (required)

l 3500/22M Transient Data Interface (TDI) Module (required)

l One or more 3500/XX Monitor Modules (required)

l One or more 3500/32M (4-channel) or 3500/33 (16-channel)Relay Modules (optional)

l One or two 3500/25 Keyphasor* Modules (optional)

l One or more 3500/92 Communication Gateway Modules(optional)

l Input/Output (I/O) Modules (required)

l 3500/94M VGA Display (optional)

l Internal or external intrinsic safety barriers, or galvanic isolators

for hazardous area installations (optional)

l 3500 System Configuration Software (required)

System components are described in more detail in the following section and in their individual datasheets.

The Bently Nevada Seismic Probe Velocity Sensor System is designed to measure absolute vibration (relative to free space) of a bearing housing, enclosure, or structure.

The two-wire system consists of a transducer and appropriate cable.

The Seismoprobe series of velocity sensors is a two-wire design using moving coil technology.

It provides a voltage output proportional to the vibration velocity of the sensor.

Moving coil sensors are less sensitive to shock or pulse excitation than solid state velocity sensors.

Solid-state velocity sensors are themselves accelerometers with embedded integrated electronics.

Moving coil sensors are less sensitive to shocks or pulsed excitation and are a good choice for some applications.

Portable measurement applications are facilitated by the fact that no external power supply is required.

System Components 

This section describes the individual components that make up a complete 3500 system. 

Instrument Rack The standard 3500 Rack is available in 19” EIA rail-mount, panel-cutout-mount, and bulkhead-mount versions.

The rack provides slots for two Power Supplies and a TDI in the left-most rack positions that are reserved exclusively for these modules. 

The remaining 14 slots in the rack can accommodate any combination of monitor, display, relay, Keyphasor module, 

and communication gateway modules. 

All modules plug into the rack’s backplane and consist of a main module and an associated I/O module. 

The I/O module installs at the rear of the rack for panel-mount systems, and above the main module for bulkhead-mount systems. 

Standard rack depth is 349 mm (13.75 inches), while bulkhead mount rack depth is 267 mm (10.5 inches). 

NEMA 4 and 4X weatherproof housings are available when required for environmental protection or when purge air is used.

Other advantageous products on sale are listed below:

BENTLY 350053 Electronic Speed Detection Systems

BENTLY 3500-53 133388-01 Overspeed Detection Module

BENTLY 350060 Temperature MonitorSix temperature monitoring channels

BENTLY 3500-60 163179-01 Sensor proximity power module

BENTLY 350092 Communication Gateway Module

BENTLY 350092 136180-01 Gateway Ethernet and Communication Module

BENTLY 60M100-00 Detector Module

BENTLY 350020 Rack Interface Modules

BENTLY 3500-20 125744-02 Standard Rack Interface Module

BENTLY 350020 125768-01 Rim I/O Modules with RS232/RS422 Interface

BENTLY 350022M Data Interface Module

BENTLY 350022M 138607-01 Standard Transient Data Interface Module with USB Cable

BENTLY 350022M 146031-01 Transient Data Interface I/O Module

BENTLY 350022M 288055-01 Standard Transient Data Interface Module

BENTLY 350025 Enhanced Keying Module

BENTLY 3500-25 149369-01 Enhanced Keying Module

BENTLY 350025 184684-01 Enhanced Keying Module

BENTLY 350025 149369-01 Enhanced Key Phasor Module Dual Channel Module

BENTLY 350032 4-Channel Relay Module

BENTLY 350032 125712-01 4 Channel Relay Module

BENTLY 350032M 4 Channel Relay Module Full Height Module

BENTLY 350033 149986-01 Spare 16-Channel Relay Control Module

BENTLY 350040M Proximity Monitor I/O Module

BENTLY 350040M 140734-01 Proximity Monitor I/O Module

BENTLY 350040M 176449-01 Proximity Monitor Module

BENTLY 3500-42M Proximity/Seismic Monitor Module

BENTLY 3500-42M 176449-02 Proximity/Seismic Monitor

BENTLY 350044M 176449-03 Aerospace Derived GT Vibration Monitor

BENTLY 3500-45 Position Monitor