MODAL
Excitation Solutions
Applications Expertise Behind Every Exciter
There’s more to using and buying
MODAL Exciters than meets the
eye. Misjudging MODAL testing
applications can be fraught with
unforeseen hazards that contaminate data. Miscalculating hidden
costs can be risky. Have a look at
key specs of each model and find the
exciter that is right for you.
MODAL 50A
#1 selling MODAL exciter in the
world! the MODAL 50 was designed
by a team of MODAL testers including University of Cincinnati professors. It delivers 50 lbs (220N) of force
and 1.0” (25mm) of stroke pk-pk.
MODAL 110
The “baby” of the MB MODAL family, this Exciter has significant size
advantages over larger models when
testing in compact areas.
Long stroke, light moving element
mass, low longitudinal stiffness.
Delivers 110lbs (500N) of force and
1.5” (38mm) of stroke pk-pk. Has
twice the force and 50% more stroke
than the MODAL 50.
MODAL 25
MODAL 250
MODAL 2
This model is literally 1/2 MODAL
50; it has half the magnets, half the
force, half the weight. The MODAL
25 delivers 25 lbs (110N) of force
and 1.0” (25mm) of stroke pk-pk.
DATA SHEET
Ideal for tough challenges from
stiff, massive objects like extracting modes from a semi-truck, the
MODAL 250 delivers 25 lbs (1115N)
of force and 2” (50mm) of stroke.
MODAL 500
Force Output with Forced Air Cooling; 2,000N pk sine excitation (450
lbf); 1,300N RMS random (290 lbf).
Force Output with Ambient Air
Cooling is 1,000N pk sine excitation (225 lbf); 650N RMS random
(145 lbf). 50mm peak-to-peak (2
in.) stroke
MODAL 1000
The “big daddy” of the family. Force
Output with Forced Air Cooling:
4,000N pk sine excitation (900
lbf ); 2,600N RMS random (585
lbf) MODAL 1000 Force Output
with Ambient Air Cooling: 2,000N
pk sine excitation (450 lbf); 1,300N
RMS random (290 lbf ). 45mm
peak-to-peak (1.8 in. p-p) stroke .
TECHNOLOGY · TEST PROCESSES · ENGINEERING SERVICES
The MB MODAL 2 delivers 2lbs force (9 N) and 0.16” (4 mm) stroke pk-pk; Thruhole simplifies stinger adjustment; Compact design allows for easy positioning, and
testing of otherwise difficult areas.
MODAL 2 EXCITER SPECS
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US-20W AMPLIFIER SPECS
Force: 2 lbf peak (9 N)
Stroke: 0.16” (4 mm) p-p;
Bandwidth: 5 Hz-10 kHz
Moving element: 0.6 oz (16 g)
Longitudinal stiffness; Approx. 70 lb/in
(12.2N/mm)
Shaker weight: 4.8 lbs (2.2 kg)
Clearance hole through armature for stinger
10-32 threaded rod compression stinger
4.3”H x 3.5”W x 3.5”D
(110 mm H x 90 mm W x 90 mm D)
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Frequency range; 10 Hz-20 kHz
AC coupled
20 VRMS max. output voltage
1 ARMS max. output current
Output current measurement, analog meter
1 Amp current limited
Input power: 85-132VAC; 50/60 Hz
3.4” H x 6.3” D x 5.9” W
(88 mm H x 150 mm W x 160 mm D)
Weight: 4 lbs (1.8 kg)
MODAL 25 EXCITER SPECS
Delivers 25 lbs force (110N) and 1.0” (25mm) stroke pk-pk. Has all the
features that make MB MODAL Exciters worldwide best sellers, including the armature thru-hole. It’s literally half a MODAL 50: half the
magnets, half the force and half its weight. The MB EM Chuck System
combines an electromagnet, a special chuck, and electronic hardware
to allow remote on/off stinger engagement for the MODAL 25.
MODAL 25 EXCITER SPECS
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MB500VI AMPLIFIER SPECS
Force: 25 lbf peak (110 N) forced-air
cooled; 13 lbf pk (55 N) convection
Stroke: 1” (25 mm) p-p; 1.1” (28 mm)
between stops
Bandwidth: DC-4000 Hz
Moving element: 0.3 lbs (0.1 kg)
Shaker weight: 30 lbs (14 kg)
9” H x 7½” W x 9¼” D
(230 mm x 190 mm x 235 mm)
Shaker cooling: shop air, with integral air
coupling; aux. fan cooling package
Clearance hole through armature for
stinger
Compression and piano wire stingers,
secured with collets and chuck nuts
Options: Accessory Kit & Cooling Unit
CE Mark
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Linear amplifier design
Freq. range: DC-20 KHz; usable to 50 KHz
AC or DC coupled, separate BNCs
Current feedback and voltage feedback,
external switch selectable
25 VRMS max. output voltage
20 ARMS max. output current
Output current measurement, BNC
Over-current, over-voltage protection
Over-temperature protection
User-adjustable current & voltage limits
Input power: 100, 110, 120, 200, 220,
240V; 48/62 Hz (1.0 kVA)
Sig. IN for max OUT: ±3 Vpk; others avail.
19” rack mount x 3½” H x 14¼” D
(89 mm H x 362 mm D)
Weight: 33 lbs (15 kg)
CE Mark
MB MODAL EXCITERS
MODAL 2 EXCITER SPECS
MB Dynamics, Inc.
DATA SHEET
25865 Richmond Road · Cleveland OH · 44146 USA
+1 216 292 5850 phone +1 216 292 5614 fax
www.mbdynamics.com
13MAY
The #1 selling MODAL 50 along with MB’s MODAL applications expertise has revolutionized MODAL testing.
This Exciter was designed by a team of world-respected MODAL testers, including University of Cincinnati professors, to eliminate problems encountered when using traditional shakers for MODAL tests. The MODAL 50
slashes setup time to a minimum! Conveniences in fixturing and setup like the clearance hole through the armature and shaker and a collet chuck for gripping a threadless stinger make easy the attachment of the MODAL 50
to a test structure. 50 pounds dynamic force from an Exciter weighing little more than 50 lbs makes it portable
and easy to setup by one person.
• Clearance hole through armature and shaker allows unlimited
positioning along the axis of the stinger
• Collet chuck with clearance hole through armature and shaker
provides easy attachment of “one size fits all” stinger
• Piano wire minimizes cross-axis measurement errors; large static
force can be applied without derating 50 lb dynamic force
• Quick disconnect turnbuckles easily adjust suspension,
6 dof positioning
• Lightweight shaker, easy-mount inertial masses/accessories allows
one-man setup and portability to remote locations
• Trunnion base with two hand-knobs and three screw feet allow
adjustment to virtually any excitation angle
• Quick connect/disconnect of additional mass supplies large inertial
restraint for low frequency tests
Universal: No Need for 2 lbs Force or 6” Stroke Shakers
• 1” stroke is sufficient for flexible structures and low frequency
suspended shaker tests
• 50 lbs dynamic force - enough for large test articles such as mid- to full-size automobile
• Lightweight armature (<0.4 lb) enables testing small items
• Broad usable frequency range (1-4000 Hz) handles almost every MODAL survey
• Ideal for multi-shaker random, single-point random, multi-point sine dwell, and even burst random
• Additionally, MB’s EM CHUCK SYSTEM has revolutionized MODAL testing by combining an
electromagnet, a special chuck, and electronic hardware to allow remote on/off stinger engagement
Stroke: 1” peak-peak (continuous duty); 1.1” between stops
Force Output:
• Convection Cooling: 25 pounds (peak)
• Shop Air by User: 50 pounds (peak)
• Portable Cooling: 50 pounds (peak) optional
Stinger Attachments: Chuck and assortment of collets handles wire sizes from .020” to .125”
Shaker Attachments: Floor: adjustable trunnion base & screw feet. Suspended: multiple turnbuckles
Test Specimen Static Pre-Load: Capable of tensioning stinger in excess of 50 pounds
Weight: Shaker with trunnion base: 55 pounds
Bounce Mode of Large Inertial Configuration on Armature Suspension: Approx. 1 Hz
Dimensions: 11 ½” H (to top of collet chuck with feet retracted) 7 ½” x 9 ¼” footprint
Drive Cable Lenghth: 30’ standard (100’ cable available as option)
MB MODAL EXCITERS
MODAL 50 EXCITER SPECS
MB Dynamics, Inc.
DATA SHEET
25865 Richmond Road · Cleveland OH · 44146 USA
+1 216 292 5850 phone +1 216 292 5614 fax
www.mbdynamics.com
13MAY
Much lighter exciter weight and thru-hole to attach stinger. Delivers 110 lbs force
(500N) and 1.5” (38 mm) stroke pkpk; has twice the force and 50% more stroke than
the MODAL 50. Long stroke. Light moving element mass. Low longitudinal stiffness.
Stiff radial stiffness. Neodymium magnets.
MODAL 110 EXCITER SPECS
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MB500VI AMPLIFIER SPECS
Force: 110 lbf peak (500 N) forced-air cooled;
55 lbf pk (250 N) convection
Force: 75 lbf RMS (350 N) forced-air cooled;
40 lbf RMS (175 N) convection
Stroke: 1.5” (38 mm) p-p; 1.6” (41 mm) between stops
Bandwidth: DC-5000 Hz
Moving element: 1.2 lbs (0.6 kg)
Longitudinal stiffness; 30 lb/in (5.2N/mm)
Shaker weight: <48 lbs (22 kg)
Shaker cooling: shop air, with integral air
coupling; aux. fan cooling package
Clearance hole through armature for stinger
Compression and piano wire stingers, secured
with collets and chuck nuts
Overtravel protection
Current limiting shutdown
Options: Accessory Kit & Cooling Unit
CE Mark
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Linear amplifier design
Frequency range; DC-20 KHz; usable to 50 KHz
AC or DC coupled, separate BNCs
Current feedback and voltage feedback, external
switch selectable
25 VRMS max. output voltage
20 ARMS max. output current
Output current measurement, BNC
Over-current, over-voltage shutdown protection
Over-temperature protection
Set-up & monitor with PC via LAN or wireless
User-adjustable current and voltage limits
Input power: 100, 110, 120, 200, 220, 240V;
48 - 62 Hz (1.0 KVA)
Sig. IN for max OUT: ±3Vpk; others available
19” rack mount x 3½”H x 14¼”D
(89 mm H x 362 mm D)
Weight: 33 lbs (15 kg)
CE Mark
MODAL 250 EXCITER SPECS
Force Output with Forced Air cooling
250 lbs. force peak (1115N); 125 lbs. RMS (560N)
Force Output with Ambient Air cooling
125 lbs. force peak (550N); 65 lbs. force RMS (290N)
Stroke
2 inches (50mm) peak-to-peak stroke
Velocity
55 inches/second (1.4m/s)
Acceleration
81 g
Frequency Range
DC-1000 Hz usable to 3000 Hz
Moving Element Weight
Less than 3 pounds (1.4kg)
Moving Element Axial Resonance
Approximately 2000 Hz
Driven-Axis Stiffness
25 pounds/inch (4.4 N/mm)
Exciter Weight, incl. Trunnion Base
250 pounds (115kg)
Stinger Attachment
¼-28 (M6) female thread on shaker armature
Shaker Attachments
Floor mount with adjustable trunnion base & screw feet;
Suspension mount with multiple turnbuckles
Dimensions
17-3/16”H x 18”x14” footprint; 435mm High x 460mm x 355mm
Drive Cable Length
30 ft (10m); up to 150 ft (50m) optional
Accessory Kit (optional)
Turnbuckles, wrenches, two M6 stingers x 400mm long, four 11.5kg
bolt-on-masses, nuts, bolts, users manual
Cooling (optional)
Portable cooling; with Quiet Enclosure < 60dBA; or shop air
Force Sensor (optional)
500 lbs. (2224N) tension & compression; 10 mV/lb (2248 mV/kN)
MB MODAL EXCITERS
MODAL 110 EXCITER SPECS
MB Dynamics, Inc.
DATA SHEET
25865 Richmond Road · Cleveland OH · 44146 USA
+1 216 292 5850 phone +1 216 292 5614 fax
www.mbdynamics.com
13MAY
Flexures for Armature Guidance
Force Output with Forced Air Cooling
· 2,000N pk sine excitation (450 lbf); 1,300N RMS random (290 lbf)
Force Output with Ambient Air Cooling
· 1,000N pk sine excitation (225 lbf); 650N RMS random (145 lbf)
Stroke
· 50mm peak-to-peak (2 in.)
Velocity
· 1.5m/s peak (60 inches/second)
Acceleration
· 68 g pk continuous sine
Frequency Range
· DC-1000 Hz usable to 4000 Hz
Moving Element Weight
· Less than 3.0kg (6.6 lbs.)
Driven-Axis Stiffness
· 7.5 N/mm (42 pounds/inch)
Exciter Weight, incl. Trunnion Base
· 200kg (440 pounds)
Stinger Attachment
· M6 (¼-28) female thread on shaker armature
Shaker Attachments
· Floor mount with trunnion base;
suspension mount with multiple turnbuckles
Dimensions
· 457mm x 355mm Footprint x 516mm High (18”x14”x20 5/16”)
Drive Cable Length
· 10m (32 ft.); up to 50m (160 ft.) optional
Accessory Kit
· Turnbuckles, wrenches, M6/M10/M4 stingers X 400mm long;
(Optional bolt-on-masses for additional inertia with nuts & bolts)
Cooling
· Portable unit; optional Quiet Enclosure < 60dBA; or shop air
Force Sensor (optional)
· 2,225N (500 lbs.) tension & compress; 10 mV/lb (2248 mV/kN)
MODAL 500 Performance, Blocked Armature
Blocked Armature: high stiffness reflected by test item
back into MODAL 500 and no movement of MODAL 500
body. A measure of low frequency force output
MODAL 500 in Trunnion Base
(other base designs available)
MODAL 500 Performance, Free Armature
Free Armature: no stiffness reflected by test item
back into MODAL 500 and no movement of
MODAL 500 body. A measure of low frequency
force output
MB MODAL EXCITERS
MODAL 500 EXCITER SPECS
MB Dynamics, Inc.
DATA SHEET
25865 Richmond Road · Cleveland OH · 44146 USA
+1 216 292 5850 phone +1 216 292 5614 fax
www.mbdynamics.com
13MAY
Force Output with Forced Air Cooling
Force Output with Ambient Air Cooling
Stroke
Velocity
Acceleration
Frequency Range
Moving Element Weight
Moving Element Axial Resonance
Driven-Axis Stiffness
Exciter Weight, incl. Trunnion Base
Stinger Kit (Stainless Steel)
Stinger Attachment
Shaker Attachments
Dimensions in trunnion base
Drive Cable Length
Power Amplifier
Cooling (optional)
Accessory Kit & Inertial Mass (optional)
Force Sensor (optional)
* 4,000N pk sine excitation (900 lbf); 2,600N RMS random (585 lbf)
* 2,000N pk sine excitation (450 lbf); 1,300N RMS random (290 lbf)
* 45mm peak-to-peak (1.8 in. p-p)
* 1.75m/s peak (70 inches/second)
* 25 g pk continuous sine (MODAL 1000 moving element only)
* DC-2000 Hz
* 16.4kg (36 lbs.)
* > 2,000 Hz
* 31 N/mm (180 pounds/inch)
* 364kg (800 pounds)
* ½” hex stingers: three 400mm long, three 200mm long; each has
3/8-16 UNC threads on one end and ¼-28 UNF-2B on the other
* Chuck (1/2” drill size) and wrench key for tightening on stingers
* Floor mount with trunnion base; with vertical-only base;
suspension mount with optional turnbuckles & trunnion base
* 570mm X 485mm Footprint X 910mm High (to top of chuck)
* 10m (32 ft.)
* MB Model PVL-S (see Data Sheet; amplifier only, no field supply)
* Portable unit; optional Quiet Enclosure < 60dBA; or shop air
* Bolt-on-masses with nuts & bolts for mounting: 38kg and 50kg
* 4,450N (1,000 lbs.) tension & compression; 5mV/lb (1124 mV/kN)
MODAL 1000 Performance, Blocked Armature
MODAL 1000 Exciter
Blocked Armature: high stiffness reflected by test item back
into MODAL 1000 and no movement of MODAL 1000 body.
A measure of low frequency force output
MODAL 1000 Performance, Free Armature
Free Armature: no stiffness reflected by test
item back into MODAL 1000 and no movement
of MODAL 1000 body. A measure of low frequency force output
MB MODAL EXCITERS
MODAL 1000 EXCITER SPECS
MB Dynamics, Inc.
DATA SHEET
25865 Richmond Road · Cleveland OH · 44146 USA
+1 216 292 5850 phone +1 216 292 5614 fax
www.mbdynamics.com
13MAY