Bently Nevada 3500/40M Data sheet

3500/40M Proximitor Monitor

Datasheet

Bently Nevada Machinery Condition Monitoring

Description

The 3500/40M Proximitor Monitor is a four-channel monitor
that accepts input from Bently Nevada proximity transducers,
conditions the signal to provide various vibration and
position measurements, and compares the conditioned
signals with user-programmable alarms. The user can
program each channel of the 3500/40M with the 3500 Rack
Configuration Software to perform any of the following
functions:

l Radial

vibration

l Thrust

position

The primary purpose of the 3500/40M Proximitor Monitor is to
provide the following:

l Eccentricity l REBAM

l Differential

expansion

141535 Rev. K



l Machinery protection by continuously comparing

monitored parameters against configured alarm
setpoints to drive alarms

l Essential machine information for both operations and

maintenance personnel

Each channel, depending on configuration, typically
conditions its input signal to generate various parameters
called static values. You can configure alert setpoints for
each active static value and danger setpoints for any two of
the active static values.

You program the monitor channels in pairs. The monitor
channels can perform up to 2 of these functions at a time.
Channels 1 and 2 can perform one function, while channels 3

and 4 perform another (or the same) function.

3500/40M Proximitor Monitor
Datasheet 141535 Rev. K



Signal Conditioning

Specifications

Inputs

Signal

Power
consumption

Standard I/O

TMR I/O

Sensitivity

Radial Vibration

Thrust

Eccentricity

Differential
Expansion

REBAM

Outputs

Front Panel LEDs

OK LED

TX/RX LED

Bypass LED

Buffered
Transducer
Outputs

Output
Impedance

Transducer
Power
Supply

Accepts from 1 to 4 proximity
transducer signals

7.7 watts, typical

Input Impedance

10 kΩ
(Proximitor and acceleration
inputs

The effective impedance of three
bussed TMRI/O channels wired in
parallel to one transducer is50
kΩ

3.94 mV/μm (100 mV/mil) or

7.87 mV/μm (200 mV/mil)

3.94 mV/μm (100 mV/mil) or

7.87 mV/μm (200 mV/mil)

3.94 mV/μm (100 mV/mil) or

7.87 mV/μm (200 mV/mil)

0.394 mV/μm (10 mV/mil) or

0.787 mV/μm (20 mV/mil)
40 mV/μm (1000 mV/mil) or

80 mV/μm (2000 mV/mil)

Indicates when the 3500/40M SIL
Proximitor is operating properly.

Indicates when the 3500/40M SIL
Proximitor is communicating with other
modules in the 3500 rack.

Indicates when the 3500/40M SIL
Proximitor is in Bypass Mode.

The front of each monitor has one
coaxial connector for each channel.

Each connector is short-circuit
protected.

550 Ω

-24 Vdc

Specified at +25 ºC (+77 ºF) unless
otherwise noted.

Radial Vibration

Frequency Response

User-programmable

Direct filter

Gap filter -3 dB at 0.09 Hz

Not 1X filter

Smax 0.125 to 15.8 times running speed

1X and 2X vector
filter

Single-pole
4 Hz to 4000 Hz or
1 Hz to 600 Hz

60 cpm to 15.8 times running
speed
Constant Q notch filter
Minimum rejection in stopband
of -34.9 dB

Constant Q Filter
Minimum rejection in stopband
of -57.7 dB

1X and 2X Vector, Not 1X, and Smax
parameters are valid for machine
speeds of 60 cpm to 60,000 cpm.

Accuracy

Exclusive of filtering

Direct and Gap

1X and 2X

Smax Within ±5% maximum

Not 1X











Within ±0.33% of full-scale
typical
±1% maximum

Within ±0.33% of full-scale
typical
±1% maximum

±3% for machine speeds less
than 30,000 cpm
±8.5% for machine speeds
greater than 30,000 cpm

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3500/40M Proximitor Monitor
Datasheet 141535 Rev. K

Thrust and Differential Expansion

Table 1: Relationship Between Nominal Shaft
Speed and the Valid Speed Range

Within ±0.33% of full-scale

Accuracy

Frequency Response

Direct filter -3 dB at 1.2 Hz
Gap filter -3 dB at 0.41 Hz

typical
±1% maximum

Eccentricity

Within ±0.33% of full-scale

Accuracy

Frequency Response

Direct filter -3 dB at 15.6 Hz
Gap filter -3 dB at 0.41 Hz

typical
±1% maximum



REBAM

Frequency Response

Spike

Element

Rotor

Direct

Gap

1X vector filter



User-programmable
from 0.152 to 8678 Hz

User-programmable for BPFO
ranging from 0.139 to 3836 Hz

High-pass corner is 0.8x BPFO.
Low-pass corner is 2.2x BPFO.

User programmable from 0.108
to 2221 Hz

Programmable from 3.906 to 14.2
Hz

Selection is determined by Spike
and Rotor filters.

Programmable from 0.002 to 1.0
Hz

Selection is determined by the
Rotor filter.

The range of shaft speeds for
which the value is valid depends
on the nominal shaft speed for
which the channel is configured.

Nominal Shaft

Speed (Hz)

Valid Speed Range (Hz)

10 to <126 0.071 to 160

126 to <252 0.133 to 330

252 to <504 0.25 to 660

504 to 584 0.50 to 750

If a multi-event gear or speed wheel
generates the speed input, the upper
limitation of the resultant input signal is
approximately 20 KHz.



Filter Quality

6-pole Elliptic

Spike high-pass

Element
bandpass

Rotor low-pass

Rotor, direct high­pass

Spike, direct low­pass

Gap low-pass

1X amplitude

(155 dB per decade, minimum)

Corner frequency is -0.1 dB.
8-pole Butterworth

(155 dB per decade minimum)

Corner frequency is -3 dB.
6-pole Elliptic

(155 dB per decade, minimum)

Corner frequency is -0.1 dB.
1-pole Butterworth

(18 dB per decade, minimum)

Corner frequency is -3 dB.

Corner is -0.3 dB maximum.

1-pole Butterworth
(18 dB per decade, minimum)

Corner frequency is -3 dB.
Constant Q of 16.67

Stopband frequencies are 0.91
and 1.09 times the running
speed.

Stopband attenuation is -51 dB
minimum.







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3500/40M Proximitor Monitor
Datasheet 141535 Rev. K

 Accuracy

Within ±0.33% of full scale typical

Amplitude

Phase 3 degrees error, maximum

Channels
enabled

±1% maximum when input signal
is at the center frequency of the
measured value's passband

Certain configurations allow the
user to enable only one channel
of a channel pair.



Filter Tracking / Stepping (Requires a valid speed

signal)

Initial condition Nominal filter set used
Switch from

nominal to lower
filter set

Switch from lower
to nominal filter
set

Switch from
nominal to higher
filter set

Switch from
higher to nominal
filter set

Shaft speed error
condition

Current shaft speed ≤ 0.9 x
(nominal shaft speed)

Current shaft speed ≥ 0.95 x
(nominal shaft speed)

Current shaft speed ≥ 1.1 x
(nominal shaft speed)

Current shaft speed ≤ 1.05 x
(Nominal Shaft Speed)

Nominal filter set used

Physical

Monitor Module (Main Board)

Dimensions
(Height x Width x
Depth)

Weight 0.91 kg (2.0 lb)

I/O Modules (non-barrier)

Dimensions
(Height x Width x
Depth)

Weight 0.20 kg (0.44 lb)

I/O Modules (barrier)

Dimensions
(Height x Width x
Depth)

Weight 0.46 kg (1.01 lb)





241.3 mm x 24.4 mm x 241.8
mm
(9.50 in x 0.96 in x 9.52 in)

241.3 mm x 24.4 mm x 99.1
mm
(9.50 in x 0.96 in x 3.90 in)

241.3 mm x 24.4 mm x 163.1
mm
(9.50 in x 0.96 in x 6.42 in)

Rack Space Requirements

Monitor 1 full-height front slot
I/O Modules 1 full-height rear slot



Barrier Parameters

The following parameters apply to CSA-NRTL/C
and ATEX / IECEx approvals.

Proximitor Barrier

Vmax (PWR) = 26.25V
(SIG) = 13.65 V

Circuit Parameters

Channel Parameters
(entity)

Imax (PWR) = 110.48 mA
(SIG) = 2.74mA

Rmin (PWR) = 237.6 Ω
(SIG) = 4985 Ω

Vmax = 27.45 V
Imax = 113.24 mA
Rmin (PWR) = 237.6 Ω
(SIG) = 4985 Ω



Alarms

Use Rack Configuration Software
to set alert levels for each value
measured by the monitor and
Danger setpoints for any two of
the values measured by the
monitor.

Alarm Setpoints

Accuracy of
alarm setpoints

Alarm Time Delays

You can program alarm delays using

Rack Configuration Software.

Radial vibration, thrust, differential expansion

Alert

Alarms are adjustable from 0 to
100% of full-scale for each
measured value. However, when
the full-scale range exceeds the
range of the transducer, the
range of the transducer will limit
the setpoint.

Within 0.13% of the desired value

and eccentricity

From one to 60 seconds in one

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3500/40M Proximitor Monitor
Datasheet 141535 Rev. K

second intervals

Danger

Alert

Danger

0.1 seconds or from one to 60
seconds in 0.5 second intervals

REBAM

From the calculated minimum
value to 400 seconds in one
second intervals

From the calculated minimum
value to 400 seconds in 0.5
second intervals

Compliance and Certifications

FCC

This device complies with part 15 of the
FCC Rules. Operation is subject to the
following two conditions:

l This device may not cause harmful

Static Values

Static values are measurements used to
monitor the machine. The 3500/40M Proximitor
Monitor returns the following static values:

Direct, Gap, 1X Amplitude, 1X

Radial Vibration

Thrust Position Direct, Gap
Differential

Expansion

Eccentricity

REBAM



Phase Lag, 2X Amplitude, 2X
Phase Lag, Not 1X Amplitude and
Smax Amplitude

Direct, Gap

Peak-to-peak, Gap,
Direct Minimum, Direct Maximum

Spike, Element, Rotor, Direct, Gap,
1X Amplitude, 1X Phase Lag

EMC

European Community Directive:

Standards:

Industrial Environments

Industrial Environments

interference.

l This device must accept any

interference received, including
interference that may cause
undesired operation.

EMC Directive 2014/30/EU

EN 61000-6-2 Immunity for

EN 61000-6-4 Emissions for

Electrical Safety

European Community Directive:

LV Directive 2014/35/EU

Standards:

EN 61010-1

RoHS

European Community Directive:

RoHS Directive 2011/65/EU

Maritime

ABS - Marine and Offshore Applications

DNV GL Rules for Classification – Ships,
Offshore Units, and High Speed and Light
Craft

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3500/40M Proximitor Monitor
Datasheet 141535 Rev. K

Hazardous Area Approvals

For the detailed listing of country and product
specific approvals, refer to the Approvals Quick
Reference Guide (108M1756) available from

Bently.com.

CSA/NRTL/C

Class I, Zone 2: AEx/Ex nA nC ic
IIC T4 Gc;

When used with
I/O module
ordering options
without internal
barriers

When used with
I/O module
ordering options
with internal
barriers

Class I, Zone 2: AEx/Ex ec nC ic
IIC T4 Gc;
Class I, Division 2, Groups A, B, C,
and D;

T4 @ Ta= -20˚C to +65˚C (-4˚F
to +149˚F)
When installed per drawing
149243 or 149244.

Class I, Zone 2: AEx/Ex nA nC ic
[ia Ga] IIC T4 Gc;
Class I, Zone 2: AEx/Ex ec nC ic
[ia Ga] IIC T4 Gc;
Class I, Division 2, Groups A, B, C,
and D (W/ IS Output for Division

1)

T4 @ Ta= -20˚C to +65˚C (-4˚F
to +149˚F)
When installed per drawing

138547.

ATEX/IECEx

When used with
I/O module
ordering options
without internal
barriers

When used with
I/O module
ordering options
with internal
barriers



II 3 G


Ex nA nC ic IIC T4 Gc;
Ex ec nC ic IIC T4 Gc;

T4 @ Ta= -20˚C to +65˚C (-4˚F
to +149˚F)
When installed per drawing
149243 or 149244.

II 3(1) G

Ex nA nC ic [ia Ga] IIC T4 Gc;
Ex ec nC ic [ia Ga] IIC T4 Gc;

T4 @ Ta= -20˚C to +65˚C (-4˚F
to +149˚F)
When installed per drawing

138547.

6/10

3500/40M Proximitor Monitor
Datasheet 141535 Rev. K

Ordering Considerations

General

The 3500/40M Module requires the following (or
later) firmware, and software revisions:

3500/01 Software – Version 2.50
3500/02 Software – Version 2.20
3500/03 Software – Version 1.21

When ordering I/O Modules with External
Terminations the External Termination Blocks
and Cable must be ordered separately for each
I/O Module.

External Termination Blocks cannot be used
with Internal Termination I/O Modules.

Bussed External Termination Blocks are to be
used with TMR I/O Modules only.

Internal Barrier I/O Modules

Consult the 3500 Internal Barrier specification
sheet (Document 141495) if the Internal Barrier
Option is selected.

REBAM

The REBAM channel type requires the following
(or later) firmware, and software revisions:

3500/40M Module Firmware – Revision 2.1
3500/01 Software – Version 3.30
3500/02 Software – Version 2.40
3500/03 Software – Version 1.40
DM2000 Software - Version 3.40.

Requires the M version of the 3500 Proximitor
Monitor.

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3500/40M Proximitor Monitor
Datasheet 141535 Rev. K

Cables

Ordering Information

For the detailed listing of country and product
specific approvals, refer to the Approvals Quick
Reference Guide (108M1756) available from

Bently.com.



Proximitor Monitor
3500/40M - AA-BB

A: I/O Module Type

Proximitor I/O Module with Internal

01

Termination
Proximitor I/O Module with External

02

Terminations
Proximitor I/O Module with Internal Barriers

03

and Internal Terminations

B: Hazardous Area Approval Option
00 None
01 CSA / NRTL / C (Class 1, Division 2)
02 ATEX / IECEx / CSA (Class 1, Zone 2)

Agency Approval Option B-02 is only
available with Ordering Option A-03



External Termination Blocks

125808-01

128015-01

132242-01

132234-01

Proximitor ET Block
Euro Style Connectors

Proximitor ET Block
Terminal Strip Connectors

Proximitor/ Seismic TMR ET Block
Euro Style Connectors

Proximitor/Seismic TMR ET Block
Terminal Strip Connectors

3500 Transducer XDCR signal to External
Termination (ET) Block Cable
129525 - AAAA-BB

A: I/O Cable Length
0005 5 feet 1.5 metres)
0007 7 feet(2.1 metres)
0010 10 feet(3.0 metres)
0025 25 feet(7.6metres)
0050 50 feet(15.2 metres)
0100 100 feet(30.5 metres
B: Assembly Instructions
01 Not assembled
02 Assembled

Spares

176449-01

125680-01

126615-01

135489-04

149716-01

143488

00580434

00502133

3500/40M Proximitor
Monitor

Proximitor I/O Module with
Internal Terminations

Proximiotr I/O Module with
Extrnal Terminations

Proximitor I/O Module with
Internal Barriers and
Internal Terminations

TMRProximitor I/O Module
with External Terminations

3500/40M Monitor User
Guide

Internal I/O Module
connector header, Euro
style, 8-pin

Internal I/O Module
connector header, Euro
style, 12-pin

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3500/40M Proximitor Monitor
Datasheet 141535 Rev. K

Graphs and Figures

1. Main Module Front View
2. Status LEDs
3. Buffered Transducer Outputs
4. I/O modules
5. Barrier I/O module, Internal Termination
6. I/O Module, Internal Termination

7. I/O Module, External Termination

8. I/O Module, External Termination

Figure 1: Assorted 3500/40M Proximitor Monitor Views

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3500/40M Proximitor Monitor
Datasheet 141535 Rev. K

Copyright 2020 Baker Hughes Company. All rights reserved.

Bently Nevada, Orbit Logo and Proximitor are registered trademarks of Bently Nevada, a Baker Hughes Business, in
the United States and other countries. The Baker Hughes logo is a trademark of Baker Hughes Company. All other
product and company names are trademarks of their respective holders. Use of the trademarks does not imply any
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information, whether a claim is asserted in contract, tort, or otherwise. Baker Hughes reserves the right to make
changes in specifications and features shown herein, or discontinue the product described at any time without
notice or obligation. Contact your Baker Hughes representative for the most current information.

The information contained in this document is the property of BakerHughes and its affiliates; and is subject to
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

1631 Bently Parkway South, Minden, Nevada USA 89423

Phone: [phone] or 1.800.227.5514 (US only)

Bently.com

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