Bently Nevada 3500/42M Data sheet

3500/42M Proximitor Seismic Monitor

Datasheet

BentlyNevadaMachineryCondition Monitoring

143694Rev. V

Description

The3500/42MProximitor Seismic Monitor:

•Protects machinery by continuously comparing monitored parameters against configured alarm setpoints to drivealarms.

•Communicates essentialmachineinformation to both operations and maintenancepersonnel.

The3500/42MProximitor Seismic Monitor is a four-channel monitor that accepts input from proximity and seismic transducers. It conditions thesignalto providevibration and position measurements and compares theconditioned signals with user-programmablealarms.

You can program each channelusing the3500Rack Configuration Softwareto monitor and report:

•	Radialvibration	•	REBAM
•	Thrust position	•	Acceleration
•	Differential	•	Shaft absolute
	expansion
•	Eccentricity	•	Circular acceptanceregion
•	Velocity

Themonitorchannels areprogrammed in pairs and can perform up to two of thelisted functions at a time. For example, Channels 1 and 2 can perform onefunction while channels 3 and 4 perform anotherorthesamefunction.

Each channel, depending on configuration, typically conditions its input signalto generatevarious parameters called static values. You can configurealert setpointsfor each activestatic valueand danger setpointsfor any two of theactivestatic values.

3500/42MProximitorSeismicMonitor
Datasheet	143694Rev. V

Outputs

Specifications

Inputs

	Signal	Accepts from 1 to 4 proximity,
		velocity oracceleration
		transducersignals
	Power	7.7 watts, typical
	consumption

Input Impedance

10 kΩ

Standard I/O (Proximitorand acceleration inputs)

Sensitivity

	Radial Vibration	3.94 mV/μm (100 mV/mil)or
		7.87 mV/μm (200 mV/mil)
	Thrust	3.94 mV/μm (100 mV/mil)or
		7.87 mV/μm (200 mV/mil)
	Eccentricity	3.94 mV/μm (100 mV/mil)or
		7.87 mV/μm (200 mV/mil)
	Differential	0.394 mV/μm (10 mV/mil)or
	Expansion	0.787 mV/μm (20 mV/mil)
	REBAM	40 mV/μm (1000 mV/mil)or
		80 mV/μm (2000 mV/mil)
	Acceleration &	10 mV/ (m/s )(100 mV/g)
	Acceleration2	2
		20 mV/ (mm/s)pk (500 mV/
	Velocity &	(in/s)pk)or
		5.8 mV/ (mm/s)pk (145 mV/
	Velocity2	(in/s)pk)or
		4 mV/ (mm/s)pk (100 mV/ (in/s)
		pk)
	Shaft Absolute,	3.94 mV/μm (100 mV/mil)or
	Radial Vibration	7.87 mV/μm (200 mV/mil)
	Shaft absolute,	3.94 mV/μm (100 mV/mil)or
	Direct	7.87 mV/μm (200 mV/mil)
		20 mV/ (mm/s)pk (500 mV/
	Shaft absolute,	(in/s)pk)or
		5.8 mV/ (mm/s)pk (145 mV/
	Velocity	(in/s)pk)or
		4 mV/ (mm/s)pk (100 mV/ (in/s)
		pk)
	Circular	SeeRadial Vibration on thenext
	Acceptance
		page..
	Region

Front Panel LEDs

OK LED	Indicates when the3500/42M
	ProximitorSeismic Monitoris
	operating properly.
	Indicates when the3500/42M
TX/RXLED	ProximitorSeismic Monitoris
	communicating with other
	modules in the3500 rack.
Bypass LED	Indicates when the3500/42M
	ProximitorSeismic Monitoris in
	Bypass Mode.
	Thefront of each monitorhas
Buffered Transducer	onecoaxial connectorfor
	each channel.
Outputs	Each connectoris short-circuit
	protected.
Output Impedance	550 Ω
TransducerPower	-24 Vdc
Supply
	+4 to +20 mA
	Values areproportional to
	monitorfull-scale.
Recorder	Themonitorprovides
	individual recordervalues for
	each channel.
	Monitoroperation is
	unaffected by short circuits on
	recorderoutputs.
Voltage	0 to +12 Vdc rangeacross load
Compliance	Load resistanceis 0 to 600 Ω.
(current output)
	0.3662 µA perbit
	±0.25% errorat room
	temperature
Resolution	±0.7% errorovertemperature
	range
	Updaterateapproximately 100
	ms orless
	TheShaft AbsoluteI/O
Shaft Absolute	modules haveoneoutput for
	each channel group.
Buffered Outputs	Each output is short-circuit
	protected.
Shaft Absolute	300 Ω
Output Impedance
Output supply	SeeOutput Supply Parameters
parameters	on page9..

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3500/42MProximitorSeismicMonitor
Datasheet	143694Rev. V

Signal Conditioning

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

Radial Vibration

Frequency Response

	User-programmable
Direct filter	Single-pole
	-3db at 4 Hzto 4000 Hzor
	1 Hzto 600 Hz
	± 1% accuracy
Gap filter	-3 dB at 0.09 Hz
	60 cpm to 15.8 times running
Not 1Xfilter	speed
	Constant Qnotch filter
	Minimum rejection in stopband
	of -34.9 dB
Smax	0.125 to 15.8 times running speed
1Xand 2Xvector	Constant QFilter
	Minimum rejection in stopband
filter	of -57.7 dB

1Xand 2XVector, Not 1X, and Smax parameters arevalid for machine speeds of60cpm to 60,000cpm.

Accuracy

	Exclusiveof filtering
Direct and Gap	Within ±0.33% of full-scale
	typical
	±1% maximum
1Xand 2X	Within ±0.33% of full-scale
	typical
	±1% maximum
Smax	Within ±5% maximum
	±3% formachinespeeds less
Not 1X	than 30,000 cpm
	±8.5% formachinespeeds
	greaterthan 30,000 cpm

Thrust and Differential Expansion

Within ±0.33% of full-scale Accuracy typical

±1% maximum

Frequency Response

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

Eccentricity

Within ±0.33% of full-scale Accuracy typical

±1% maximum

Frequency Response

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

Acceleration

Within ±0.33% of full-scale

Accuracy typical

±1% maximum Exclusiveof filters

Filter Quality

4-pole

High-pass (80 dB perdecade, 24 dB per octave)

4-pole

Low-pass (80 dB perdecade, 24 dB per octave)

Table 1: Frequency Ranges if Both Channels of a Channel Pair are Enabled

Dual Channel Frequency Response

Low or

Output Type Without High With Filter Pass Integration

Filter

RMS	10 to	10 to	10 to 9,155 Hz
	30,000	9,155
	Hz	Hz
Peak	3 to	3 to	10 to 9,155 Hz
	30,000	9,155
	Hz	Hz

Table 2: Frequency Ranges if a Single Channel of a Channel Pair is Enabled

Single Channel Frequency Response

		Without Filter	With
	Output Type	Low or High
			Integration
		Pass Filter
	RMS	10 to 30,000 Hz	10 to 14,500 Hz
	Peak	3 to 30,000 Hz	10 to 14,500 Hz

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3500/42MProximitorSeismicMonitor
Datasheet					143694Rev. V
	Acceleration II
				Not OK filter	-3 dB at 40 Hz
					Velocity II only
		Within ± 0.33% of full scale		RMS	10 to 5,500 Hz, -3 dB
	Accuracy	typical
				Peak orpeak-to-
		± 1% maximum			3 to 5,500 Hz, -3 dB
		Exclusiveof filters		peak
					Valid formachinespeeds of 60
	Filter Quality			1Xand 2Xvector
					to 100,000 cpm
		4-pole		filter	Velocity II only
	High-pass	(80 dB perdecade, 24 dB per
				Filter Quality
		octave)
					4-pole
	Low-pass	4-pole		High-pass
		(80 dB perdecade, 24 dB per			(80 dB perdecade, 24 dB per
		octave)			octave)
					2-pole
	Frequency Response
				Low-pass	(40 dB perdecade, 12 dB per
	Bias filter	-3 dB at 0.01 Hz			octave)
	Not OK filter	-3 dB at 2400 Hz
	1Xand 2Xvector	Valid formachinespeeds of 60
	filter	cpm to 100,000 cpm		Shaft Absolute, Radial Vibration

Table 3: Frequency Ranges for the 3500/42M Proximitor Seismic Monitor under Different Options using the Acceleration II Channel Type

	Frequency Ranges
		Without Filter		With
Output Type		Low or High
				Integration
		Pass Filter
RMS		10 to 30,000 Hz		10 to 20,000 Hz
Peak		3 to 30,000 Hz		10 to 20,000 Hz

Velocity and Velocity II

		Within ±0.33% of full-scale
		typical
	Accuracy	±1% maximum
		+1% -3% with MTL 764(-)Zener
		External Barrier
		Exclusiveof filters
	Velomitorsensor	Full Scale0-0.5: ±3% typical
		Full Scale0-1.0: ±2% typical
	accuracy	Full Scale0-2.0: ±1% typical
	Velomitorsensor	Underradiated immunity
		conditions, add ± 11% forall full
	accuracy with	scaleranges. Thetotal Velomitor
	barriers
		sensoraccuracy will be± 15%.
	Frequency Response
	Bias	-3dB at 0.01 Hz
		Velocity II only

Frequency Response

	Direct filter	User-programmable
		4 Hzto 4000 Hzor1 Hzto 600 Hz
	Gap filter	-3 dB at 0.09 Hz
	1Xvectorfilter	Valid formachinespeeds of 240
		cpm to 60,000 cpm

Accuracy

Within ±0.33% of full-scale Direct and gap typical

±1% maximum

Within ±0.33% of full-scale 1X typical

±1% maximum

Shaft Absolute, Velocity

Within ±0.33% of full scaletypical Accuracy ±1% maximum

Exclusiveof filters

Frequency Response

	Peak or	User-programmable
	peak-to-peak	3 to 4,000 Hz, -3 dB
	Filter Quality
	High-pass	2-pole
		(40 dB perdecade, 12 dB per
		octave)
	Low-pass	2-pole
		(40 dB perdecade, 12 dB per
		octave)
	1Xvectorfilter	Constant QFilter
		Minimum rejection in stopband

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3500/42MProximitorSeismicMonitor
Datasheet			143694Rev. V
			limitation oftheresultant input signalis
		of -57.7 dB
			approximately 20KHz.

Shaft Absolute Buffered Output

Accuracy	±6.0% @ 25 C
Circular	SeeRadial Vibration on page3..
acceptance
region

REBAM

Frequency Response

	Spike	User-programmable
		from 0.152 to 8678 Hz
		User-programmableforBPFO
	Element	ranging from 0.139 to 3836 Hz
		High-pass corneris 0.8x BPFO.
		Low-pass corneris 2.2x BPFO.
	Rotor	Userprogrammablefrom 0.108
		to 2221 Hz
		Programmablefrom 3.906 to 14.2
	Direct	Hz
		Selection is determined by Spike
		and Rotorfilters.
		Programmablefrom 0.002 to 1.0
	Gap	Hz
		Selection is determined by the
		Rotorfilter.
		Therangeof shaft speeds for
	1Xvectorfilter	which thevalueis valid depends
		on thenominal shaft speed for
		which thechannel is configured.

Table 4: Summary of the Relationship between Nominal Shaft Speed and the Valid Speed Range

	Nominal Shaft	Valid Speed Range (Hz)
	Speed (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

Filter Quality

		6-poleElliptic
	Spikehigh-pass	(155 dB perdecade, minimum)
		Cornerfrequency is -0.1 dB.
	Element	8-poleButterworth
		(155 dB perdecademinimum)
	bandpass	Cornerfrequency is -3 dB.
		6-poleElliptic
	Rotorlow-pass	(155 dB perdecade, minimum)
		Cornerfrequency is -0.1 dB.
	Rotor, direct high-	1-poleButterworth
		(18 dB perdecade, minimum)
	pass	Cornerfrequency is -3 dB.
	Spike, direct low-	Corneris -0.3 dB maximum.
	pass
		1-poleButterworth
	Gap low-pass	(18 dB perdecade, minimum)
		Cornerfrequency is -3 dB.
		Constant Qof 16.67
		Stopband frequencies are0.91
	1Xamplitude	and 1.09 times therunning
		speed.
		Stopband attenuation is -51 dB
		minimum.
	Accuracy
		Within ±0.33% of full scaletypical
	Amplitude	±1% maximum when input signal
		is at thecenterfrequency of the
		measured value's passband
	Phase	3 degrees error, maximum
		You can usecertain
	Channels	configurations to enableonly
		onechannel of a channel pair.
	enabled	SeeREBAM Channels on page17..

Ifa multi-event gear or speed wheel generates thespeed input, theupper

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3500/42MProximitorSeismicMonitor
Datasheet							143694Rev. V
	Filter Tracking / Stepping (Requires a valid speed						(PWR)= 237.6 Ω
			signal)				(SIG)= 4985 Ω
	Initial condition		Nominal filterset used		Channel		Vmax = 28.0 V
							Imax = 115.62 mA
	Switch from				Parameters
			Current shaft speed ≤ 0.9 x				Rmin (PWR)= 237.6 Ω
	nominal to lower				(entity)
			(nominal shaft speed)				(SIG)= 4985 Ω
	filterset
					Seismic Barrier
	Switch from lower		Current shaft speed ≥ 0.95 x
					Circuit		Vmax (PWR)= 27.25 V
	to nominal filter		(nominal shaft speed)
	set				Parameters		Imax (PWR)= 91.8 mA
							Rmin (PWR)= 297 Ω
	Switch from		Current shaft speed ≥ 1.1 x
	nominal to higher				Channel		Vmax = 27.25 V
	filterset		(nominal shaft speed)		Parameters		Imax = 91.8 mA
					(entity)		Rmin (PWR)= 297 Ω
	Switch from		Current shaft speed ≤ 1.05 x
	higherto nominal				Alarms
	filterset		(Nominal Shaft Speed)
	Shaft speed error		Nominal filterset used
	condition						UseRack Configuration Software
							to set alert levels foreach value
	Physical						measured by themonitorand
							dangersetpoints forany two of
							thevalues measured by the
	Monitor Module (Main Board)
							monitor.
	Dimensions		241.3 mm x 24.4 mm x 241.8 mm		Alarm Setpoints		Alarms areadjustablefrom 0 to
	(Height x Width x		(9.50 in x 0.96 in x 9.52 in)				100% of full-scaleforeach
	Depth)						measured value. However, when
	Weight		0.91 kg (2.0 lb)
							thefull-scalerangeexceeds the
	I/O Modules (non	-barrier)					rangeof thetransducer, the
							rangeof thetransducerwill limit
	Dimensions
			241.3 mm x 24.4 mm x 99.1 mm				thesetpoint.
	(Height x Width x
	Depth)		(9.50 in x 0.96 in x 3.90 in)		Accuracy of		Within 0.13% of thedesired value
					alarm setpoints
	Weight		0.20 kg (0.44 lb)
	I/O Modules (barrier)
	Dimensions		241.3 mm x 24.4 mm x 163.1 mm
	(Height x Width x
			(9.50 in x 0.96 in x 6.42 in)
	Depth)
	Weight		0.46 kg (1.01 lb)
	Rack Space Requirements
	Monitor		1 full-height front slot
	I/OModules		1 full-height rearslot

Barrier Parameters

Thefollowing parameters apply to CSA-NRTL/C and ATEXapprovals.

Proximitor Barrier

	Circuit	Vmax (PWR)= 26.80 V
		(SIG)= 14.05 V
	Parameters	Imax (PWR)= 112.8 mA
		(SIG)= 2.82 mA Rmin

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