Bently Nevada 3500/50M Data sheet

3500/50M Tachometer Module
Datasheet
Bently Nevada Machinery Condition Monitoring

Description

The 3500/50M Tachometer Module is a 2-channel module that accepts input from proximity probes or magnetic pickups to determine shaft rotative speed, rotor acceleration, or rotor direction. The module compares these measurements against user-programmable alarm setpoints and generates alarms when the setpoints are violated.
The Tachometer Module is programmed using the 3500 Rack Configuration software. The following configuration options are available:
l Speed Monitoring, Setpoint Alarming and Speed Band Alarming
l Speed Monitoring, Setpoint Alarming and Zero Speed
Notification
l Speed Monitoring, Setpoint Alarming and Rotor Acceleration
Alarming
l Speed Monitoring, Setpoint Alarming and Reverse Rotation
Notification
141538 Rev. P
The 3500/50M Tachometer Module can be configured to supply conditioned Keyphasor signals to the backplane of the 3500 rack for use by other monitors. Therefore, you don't need a separate Keyphasor module in the rack.
The 3500/50M Tachometer Module has a peak hold feature that stores the highest speed, the highest reverse speed, or the number of reverse rotations that the machine has reached. You can reset the peak values.
Bently Nevada offers an Overspeed Protection System (Product 3701/55).
3500/50M Tachometer Module Datasheet 141538 Rev. P
WARNING
PRODUCT MISUSE
Risk of personal injury or equipment damage.
Do not use the 3500/50M Tachometer Module independently or as a component of a speed control or an overspeed protection system because it does not provide protective redundancy or the response speed needed for reliable operation as a speed control or overspeed protection system.
The analog proportional output is suitable for data logging, chart recording, or display purposes only. Speed alert setpoints are suitable for annunciation purposes only.
Magnetic Pickups: Do not use magnetic pickups for the reverse rotation option or zero speed option. Otherwise, false indications of rotation direction may occur. The transducers do not provide a clean edge for the detection circuit during low speeds.
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3500/50M Tachometer Module Datasheet 141538 Rev. P
module via Euro style connectors.

Specifications

Inputs
Signal
Input signal range
Input impedance 20 k Ω (standard)
Power consumption
Transducers
Each 3500/50M Tachometer Module accepts up to two transducer signals from proximity probe transducers or magnetic pickups.
+10.0 V to -24.0 V
Signals exceeding this range are limited internally by the module.
40 k Ω (TMR)
7.15 k Ω (Internal Barrier)
5.8 watts, typical
Accepts 1 to 2 proximity transducer signals
Restrictions may apply to magnetic pickups. See on
page 2.
Output Impedance
Transducer Power Supply
Recorder
Voltage Compliance (current output)
Resolution
550 Ω
24 Vdc, 40 mA maximum per channel
+4 to +20 mA
Values are proportional to module full­scale range (rpm or rpm/min).
Individual recorder values are provided for each channel.
Monitor operation is unaffected by short circuits on recorder outputs.
0 to +12 Vdc range across load
Load resistance is 0 to 600 Ω
0.3662 µA per bit ±0.25% error at room temperature ±0.7% error over temperature range
Outputs
Front Panel LEDs
OK LED Indicates when the 3500/50M
Tachometer Module is operating properly.
TX/RX LED
Bypass LED
Buffered Transducer
Outputs
Indicates when the Tachometer Module is communicating with other modules in the 3500 rack.
Indicates when the Tachometer Module is in Bypass Mode.
The front of each module has one coaxial connector for each channel.
Each connector is short circuit and ESD protected.
Buffered outputs are available at the I/O
Update rate approximately 100 ms
Signal Conditioning
Specified at +25 ºC (+77 ºF)
Speed Input
The 3500/50M Tachometer Module supports 1 to 255 events per revolution for Rotor Acceleration and Zero Speed channel types.
All other channel types support
0.0039 to 255 events per revolution.
All channel types support a maximum full scale range of 99,999 rpm and a maximum input frequency of 20 kHz.
Minimum input frequency for
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3500/50M Tachometer Module Datasheet 141538 Rev. P
proximity transducers is 0.0167 Hz (1 rpm for 1 event per revolution).
Minimum input frequency for passive magnetic pickups is 3.3 Hz.
RPM Accuracy Less than 100 rpm = ± 0.1 rpm
100 to 10,000 rpm = ±1 rpm 10,000 to 99,999 rpm = ± 0.01% of true shaft speed
RPM/Min Accuracy
± 20 rpm/min
Transducer Conditioning
Auto Threshold
Manual Threshold
Hysteresis User selectable from 0.2 to 2.5
Use for any input above 0.0167 Hz (1 rpm for 1 event/revolution)
Minimum signal amplitude for triggering is 1 volt peak-to-peak.
User selectable from +9.5 Vdc to
-23.5 Vdc
Minimum signal amplitude for triggering is 500 millivolts peak­to-peak
volts
Alarms
Alarm Setpoints
Alarm 1 levels (setpoints) can be set for each value measured by the Tachometer.
Alarm 2 setpoints can be set for any two of the values measured by the Tachometer.
Alarm setpoints are set using software configuration.
Alarms are adjustable and can normally be set from 0 to 100% of full scale for each measured value.
Alarm Time Delays
Alarm 1 Time Delay
Alarm 2 Time Delay
Programmable alarm delays for Alarm 1 and Alarm 2
From 1 to 60 seconds in 1 second intervals
From 1 to 60 seconds in 0.1 second intervals
Measured Values
Measured values are speed measurements used to monitor a machine. The 3500/50M Tachometer Module returns the following measured values:
1
Rotor Speed
Speed Speed Band
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3500/50M Tachometer Module Datasheet 141538 Rev. P
Peak Speed
Rotor Speed 2 Speed
2
Gap
2
1
Speed Band
2
2
Rotor Acceleration
Rotor Acceleration 2
Peak Speed
Rotor Acceleration Speed Peak Speed
Rotor Acceleration
2
Gap Speed Peak Speed
Zero Speed Zero Speed
2
1
Speed Peak Speed
Zero Speed 2 Zero Speed
2
Gap
2
1
Speed Peak Speed
2
Reverse Rotation Reverse Speed
Reverse Peak Speed Speed (forward)
2
Gap Num Reverse Rotations
Weight 0.20 kg (0.44 lb)
I/O Modules (internal barrier)
Dimensions (Height x Width x Depth)
1
241.3 mm x 24.4 mm x 163.1 mm (9.50 in x 0.96 in x 6.42 in)
Weight 0.46 kg (1.01 lb)
Rack Space Requirements
1
Monitor Module 1 full-height front slot
I/O Modules 1 full-height rear slot
1
1
The primary value for the channel. This value can be included in contiguous registers in the Communications Gateway Module.
2
This measured value is for display and setup purposes only. No alarms are provided.
Physical
Monitor Module (Main Board)
Dimensions (Height x Width x Depth)
Weight
I/O Modules (non-barrier)
Dimensions (Height x Width x Depth)
241.3 mm x 24.4 mm x 241.8 mm (9.50 in x 0.96 in x 9.52 in)
0.82 kg (1.8 lb)
241.3 mm x 24.4 mm x 99.1 mm (9.50 in x 0.96 in x 3.90 in)
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3500/50M Tachometer Module Datasheet 141538 Rev. P

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
interference.
l This device must accept any interference
received, including interference that may cause undesired operation.
EMC
European Community Directive:
EMC Directive 2014/30/EU
Standards:
EN 61000-6-2 Immunity for Industrial
Environments
EN 61000-6-4 Emissions for Industrial
Environments
Electrical Safety
European Community Directive:
LV Directive 2014/35/EU
Standards:
EN 61010-1

Hazardous Area Approvals

For the detailed listing of country and product specific approvals, refer to the
Quick Reference Guide
from Bently.com.
CSA/NRTL/C
When used with I/O module ordering options without internal barriers
When used with I/O module ordering options with internal barriers
(108M1756) available
Class 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;
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.
Approvals
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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3500/50M Tachometer Module Datasheet 141538 Rev. P
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.
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3500/50M Tachometer Module Datasheet 141538 Rev. P

Ordering Considerations

To add the 3500/50M Tachometer Module to an existing 3500 Monitoring System, you must have the following versions of firmware and software:
Firmware and Software Version
3500/22M Module Firmware
3500/01 Configuration Software Version 4.20 or
3500/02 Data Acquisition Software
3500/03 Display Software
3500/50M Firmware Revision 5.30 or
3500/50M
Consider the following guidelines and restrictions before placing an order:
l External Termination Blocks cannot be used
with Internal Termination I/O modules.
l When ordering I/O Modules with External
Terminations, you must order External Termination Blocks and cables separately.
l Use Bussed External Termination Blocks with
TMR I/O modules only.
l Before selecting the Internal Barrier option, see
3500 Internal Barriers product datasheet (document 141495).
Revision (1.70)
later
Version 2.52 or later
Version 1.52 or later
later
Not
compatible with any version of 3500/20
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3500/50M Tachometer Module Datasheet 141538 Rev. P

Ordering Information

For the detailed listing of country and product specific approvals, refer to the
Quick Reference Guide
from Bently.com.
(108M1756) available
3500/50M Tachometer Module 3500/50-AA-BB
A: I/O Module Type
01
02 I/O Module with External Terminations
04 I/O Module with Internal Barriers and Internal
B: Hazardous Area Approval Option
00 None
01
I/O Module with Internal Terminations
Terminations
CSA/NRTL/C (Class 1, Division 2)
Approvals
0005
0007 7 feet (2.1 metres)
0010 10 feet (3.0 metres)
0025 25 feet (7.6 metres)
0050 50 feet (15.2 metres)
0100
B: Assembly Instructions
01
02 Assembled
5 feet (1.5 metres)
100 feet (30.5 metres)
Not Assembled
3500 Recorder Output to ET Block Cable 129529-AAAA-BB
A: I/O Cable Length
0005
0007 7 feet (2.1 metres)
5 feet (1.5 metres)
02
ATEX/IECEx/CSA (Class 1, Zone 2)

External Termination (ET) Blocks

Part Number Description
125808-05 Tachometer ET Block
Euro Style connectors
128015-05 Tachometer ET Block
Terminal Strip connectors
128702-01 Recorder ET Block
Euro Style connectors
128710-01 Recorder ET Block
Terminal Strip connectors

Cables

3500 Tachometer Signal to ET Block Cable 135101-AAAA-BB
A: I/O Cable Length
0010 10 feet (3.0 metres)
0025 25 feet (7.6 metres)
0050 50 feet (15.2 metres)
0100
B: Assembly Instructions
01 Not Assembled
02
100 feet (30.5 metres)
Assembled
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3500/50M Tachometer Module Datasheet 141538 Rev. P
Spares
Part Number Description
288062-02 3500/50M Tachometer Module
133442-01 I/O Module with Internal
Terminations
136703-01 Discrete Internal Barrier I/O
Module with Internal Terminations
133434-01 I/O Module with External
Terminations
133450-01 TMR I/O Module with External
Terminations
134938 3500/50M Tachometer User
Guide
04425545 Grounding Wrist Strap
Single use only
00580434 Connector Header
Internal Termination 8-position| Green
00580436 Connector Header
Internal Termination 6-position Green
00502133 Connector Header
Internal Termination 12-position Blue
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3500/50M Tachometer Module Datasheet 141538 Rev. P

Graphs and Figures

1. Status LEDs
2. Buffered transducer outputs
3. I/O Module, Internal Terminations
4. I/O Module, External Terminations
5. I/O Module, TMR, External Terminations
6. I/O Module, Internal Barrier, Internal Terminations
Figure 1: Front and Rear Views of the 3500/50M Tachometer Module
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3500/50M Tachometer Module Datasheet 141538 Rev. P
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1631 Bently Parkway South, Minden, Nevada USA 89423
Phone: 1.775.782.3611 or 1.800.227.5514 (US only)
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