3500/62 Process Variable Monitor
Datasheet

Bently Nevada Machinery Condition Monitoring141541 Rev. NDescription
The 3500/62 Process Variable Monitor is a 6-channel monitor
for processing machine critical parameters that meritcontinuous monitoring, such as pressures, flows,temperatures, and levels. The monitor accepts +4 to +20 mA
current inputs or any proportional voltage inputs between -10Vdc and +10 Vdc. It conditions these signals and compares
the conditioned signals to user-programmable alarm
setpoints.
The 3500/62 monitor:llContinuously compares monitored parameters againstconfigured alarm setpoints to drive alarms formachinery protection.
Provides essential machine information for both
operations and maintenance personnel.

You can program the 3500/62 using the 3500 Rack
Configuration Software to perform either current or voltage
measurements. The 3500/62 offers I/O modules for threesignal input scenarios: +/-10 Volts DC, isolated 4-20 mA, or 420 mA with Intrinsically Safe zener barriers. The Internal Barrier
I/O provides external power input terminals to provide
intrinsically safe power to the 4-20 mA transducers
When used in a Triple Modular Redundant (TMR)
configuration, you must install Process Variable Monitors
adjacent to each other in groups of three. When used in thisconfiguration, the monitor employs two types of voting toensure accurate operation and to avoid loss of machinery
protection due to single-point failures.
Triple Modular Redundant (TMR) Units are no longer
available for purchase.

3500/62 Process Variable Monitor
Datasheet

141541 Rev. N

Signal Conditioning

Specifications

Specified at +25°C (+77°F). Full-scale
range for each channel is set in thefield via 3500 Configuration Software.
No calibration is required.

InputsSignal+/-10 Vdc I/O-10 Vdc to +10 Vdc

4-20 mA Barrier I/O

4-20 mA DC

4-20 mA Isolated I/O

4-20 mA DC.

Voltage Compliance(4-20 mA Barrier I/O 13.66 V
4-20mA out)
Isolation(4-20 mA ISO I/Oonly)

4-20 mA Barrier I/O

50 Ω

4-20 mA Isolated I/O

7.0 Watts, typical.

External transducer
Power (InternalBarrier I/O Only)+24 Vdc. +/- 5% @ 250
mA max. Fused.

Alarm Time Delays
User can use software to set alarm delays asfollows:

OutputsFront Panel LEDs
OK LED

Indicates when the Process
Variable Monitor is operating
properly.

TX/RX LED

Indicates when the Process
Variable Monitor iscommunicating with othermodules in the 3500 rack.

Bypass LED

Indicates when the Process
Variable is in Bypass Mode.

Maximum 20,000 units mappedover the input signal span.
Minimum input signal span forvoltage input is 2 Volts.

User can set Alert and Danger setpoints for thevalue measured by the monitor. Alarms areadjustable and can normally be set from 0 to
100% of full-scale for each measured value. The
exception is when the full-scale range exceeds
the range of the sensor in which case thesetpoint will be limited to the range of thesensor. Accuracy of alarms is to within 0.13% ofthe desired value. The Process Variable Monitor
has both under and over alarm setpoints.

50 Ω

Power Consumption

Full ScaleRange

Alarm Setpoints

Input Impedance
1 MΩ

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

Alarms500 Volts+/-10V I/O

Accuracy

Alert

From 1 to 60 seconds in 1 secondintervals.

DangerFrom 1 to 60 seconds in 0.5
second intervals.

Proportional Values
Proportional values are Process Variablemeasurements used to monitor the machine.
The Process Variable Monitor returns current or
voltage proportional values in a variety ofdifferent units that are configurable.

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3500/62 Process Variable Monitor
Datasheet

141541 Rev. N

Environmental Limits
OperatingTemperature-30°C to +65°C (-22°F to+149°F) when used with
Internal/External Termination
I/O Module.

OperatingTemperature

0°C to +65°C (+32°F to+149°F) when used with
Internal Barrier I/O Module(Internal Termination).

Storage
Temperature

40°C to +85°C(-40°F to +185°F).

Humidity

95%, noncondensing.

Monitor Module
Dimensions(height x
width xdepth)

241.3 mm x 24.4 mm x 241.8 mm
9.50 in x 0.96 in x 9.52 in)Weight0.82 kg (1.8 lbm)

I/O Modules (without barriers)
Dimensions(height x
width xdepth)

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

Weight:0.20 kg (0.44 lbm)

I/O Module (with barriers)
Dimensions(height x
width xdepth)

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

Weight0.46 kg (1.01 lbm)

Rack Space Requirements
Monitor
Module1 full-height front slot.

I/O
Modules

1 full-height rear slot.

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3500/62 Process Variable Monitor
Datasheet

141541 Rev. N

Hazardous Area Approvals

Compliance and Certifications
FCC

For the detailed listing of country andproduct-specific approvals, refer tothe Approvals Quick Reference Guide(108M1756).

This device complies with part 15 of theFCC Rules. Operation is subject to thefollowing two conditions:ll

For additional technicaldocumentation, please log in tobntechsupport.com and access theBently Nevada Media Library.

This device may not cause harmfulinterference.
This device must accept any
interference received, includinginterference that may cause
undesired operation.

cNRTLus

EMC

When used with I/Omodule ordering
options without
internal barriers

European Community Directive:
EMC Directive 2014/30/EU
Standards:

T4 @ Ta= -20˚C to +65˚C (-4˚F to+149˚F)
When installed per drawing
149243 or 149244.

EN 61000-6-2; Immunity for
Industrial Environments
EN 61000-6-4; Emissions for
Industrial Environments

When used with I/Omodule ordering
options withinternal barriersElectrical Safety
European Community Directive:
LV Directive 2014/35/EU

EN 61010-1

RoHS
European Community Directive:
RoHS Directive 2011/65/EUMaritime
DNV GL rules for classification – Ships,
offshore units, and high speed and lightcraft
ABS Rules for Condition of Classification,
Part 1lClass I, Zone 2: AEx/Ex nA nC ic[ia Ga] IIC T4 Gc;
Class I, Zone 2: AEx/Ex ec nC ic [iaGa] 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.

Standards:lClass I, Zone 2: AEx/Ex nA nC ic IIC
T4 Gc;Class I, Zone 2: AEx/Ex ec nC ic IIC
T4 Gc;Class I, Division 2, Groups A, B, C,and D;

Steel Vessels Rules
Offshore Units and Structures

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3500/62 Process Variable Monitor
Datasheet

141541 Rev. N

ATEX/IECEx
When used with I/Omodule ordering
options without
internal barriers

II 3 GEx 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.

When used with I/Omodule ordering
options withinternal barriers

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.

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3500/62 Process Variable Monitor
Datasheet

141541 Rev. N

Ordering Information

Ordering Considerations

For the detailed listing of country andproduct-specific approvals, refer tothe Approvals Quick Reference Guide(108M1756).

GeneralIf the 3500/62 Module is added to an existing
3500 Monitoring System, the monitor requires
the following (or later) firmware and software
versions:llll

For additional technicaldocumentation, please log in tobntechsupport.com and access theBently Nevada Media Library.

3500/20 Module Firmware – 1.07 (Rev G)
3500/01 Software – Version 2.20
3500/02 Software – Version 2.10
3500/03 Software – Version 1.20

Process Variable Monitor

If the Internal Barrier I/O is used the system
must also meet these requirements:
ll

3500/62-AA-BB

3500/62 Module Firmware- 1.06 (Rev C)
3500/01 Software – Version 2.30

A: I/O Module Type01

-10 to +10 Vdc I/O Module with Internal
Terminations

02-10 to +10 Vdc I/O Module with External
Terminations

03

Isolated +4 to +20 mA I/O Module withInternal Terminations

04

Isolated +4 to +20 mA I/O Module withExternal Terminations

Importantinfo

Consult the 3500 Internal Barrier
specification sheet (partnumber 141495-01) if you selectthe Internal Barrier Option.

05

Non-Isolated +4 to +20 mA I/O Modulewith Internal Barriers and Internal
Terminations

Fuse

250 mA, 250 V fast blow type.

00

None

01

cNRTLus02

ATEX/CSA (Class 1, Zone 2)

You cannot use External Termination
Blocks with Internal Termination I/Omodules.
When ordering I/O Modules with External
Terminations, you must order the External
Termination Blocks and Cables separately.

Internal Barrier I/O Module

B: Agency Approval Option

Agency Approval Option B 02 isavailable only with Ordering Options
A 01 and A 05.

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3500/62 Process Variable Monitor
Datasheet

141541 Rev. N

External Termination Blocks

Part Number

Description

3500/62 External Termination
Block (Terminal StripConnectors).

136499-01-10 Vdc to +10 Vdc I/O Modulewith external terminations

3500/62 External Termination
Block (Euro Style Connectors).

136294-01

Isolated +4 to +20 mA I/O
Module with internalterminations

Cables136483-01

3500/62 Transducer (XDCR) Signal
to External Termination (ET) Block
Cable

Isolated +4 to +20 mA I/O
Module with externalterminations

137110-01

4 to 20 mA Barrier I/O Modulewith internal terminations

136973

3500/62 User Guide

01700059

Replacement fuse for barrier
I/O

166M2377

Connector Header
Push-in-Spring Type
(Alternative for PN 00580442)

136595-01

136603-01

134544-AAAA-BB
A: Cable Length0005

5 feet (1.5 metres)

0007

7 feet (2.1 metres)0010

10 feet (3 metres)

0025

25 feet (7.5 metres)0050

50 feet (15 metres)

0100

100 feet (30.5 metres)

B: Assembly Instructions
01

Not assembled

02

Assembled

SparesPart Number

Description

163179-03

3500/62 monitor

136590-01

Firmware IC

04425545

Grounding wrist strap (singleuse)

04400037

IC removal tool

136491-01-10 Vdc to +10 Vdc I/O Modulewith internal terminations

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3500/62 Process Variable Monitor
Datasheet

141541 Rev. N

Graphs and Figures

1. Status LEDs
2. Main Module Front View
3. 4 to 20mA Internal Terminations I/O Module
4. –10 to +10 Vdc Internal Terminations I/O Module
5. 4 to 20mA External Terminations I/O Module
6. -10 to +10 Vdc External Terminations I/O Module
Figure 1: Front and Rear Views of the 3500/62 Process Variable Monitor

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3500/62 Process Variable Monitor
Datasheet

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