The LDS V650 is a small electrodynamic shaker rated at up to 495 lbf (2.2 kN) sine force, with a usable frequency range from DC to 4,000 Hz. It is the only model in the LDS V555/V650/V721/V780 family offered with a choice of two amplifiers. With the LDS HPAK switching amplifier it delivers 495 lbf (2.2 kN), 100 gn, and 59.1 in/s (1.50 m/s). With the LDS LPA1000 linear amplifier and FPS field power supply it delivers 364 lbf (1.62 kN). A lightweight, high-performance armature and 1.0 in (25.4 mm) of peak-to-peak displacement carry up to 110 lb (50 kg) of internal payload, and the shaker operates vertically or horizontally.
Sine force: 495 lbf (2.2 kN) with HPAK; 364 lbf (1.62 kN) with LPA1000 + FPS
Random force: 346 lbf (1.54 kN) rms with HPAK; 245 lbf (1.09 kN) rms with LPA1000 + FPS
Half-sine shock force: 691 lbf (3.1 kN) with HPAK; 475 lbf (2.1 kN) with LPA1000 + FPS
Acceleration: up to 100 gn sine peak and 70 gn random rms (HPAK)
Velocity: up to 59.1 in/s (1.50 m/s) sine peak (HPAK)
Displacement: 1.0 in (25.4 mm) peak-to-peak
Usable frequency range: DC to 4,000 Hz
Internal payload capacity: 110 lb (50 kg)
At a glance
495 lbf/2.2 kN sine force for compact qualification tasks
346 lbf/1.54 kN random force for low-force screening in an air-cooled package
6.14"/156 mm armature supports small fixtures and DUTs
1.0"/25.4 mm stroke, DC- 4 kHz for versatile bench testing
Sinusoidal
495 lbf — DC to 4,000 Hz
Swept-sine resonance search and dwell to 495 lbf (2.2 kN) peak and 100 gn with the HPAK, or 364 lbf (1.62 kN) with the LPA1000 and FPS.
Random
346 lbf rms, 70 gn
PSD screening and qualification of electronic assemblies and mid-sized components to 346 lbf (1.54 kN) rms with the HPAK.
Shock / transient
Half-sine to 691 lbf
Two-millisecond half-sine pulses to 691 lbf (3.1 kN) with the HPAK, at 10% pre- and post-pulse with the standard payload.
What it is used for
Some of the use cases for the LDS V650 include:
Automotive component testing: sine and random vibration testing of small to mid-sized components.
Electronic assembly testing: vibration screening and qualification of electronic assemblies.
Modal and structural analysis: structural excitation across a usable range from DC to 4,000 Hz.
Fatigue and resonance testing: resonance searches and dwells on test articles up to 110 lb (50 kg).
Velocity transducer or high-speed actuator: using the shaker itself as a transducer or fast actuator.
In-house testing and calibration: routine vibration checks and calibration work.
Key features
Two amplifier options: the HPAK for maximum force from a single three-phase 5 kVA unit, or the rack-mount LPA1000 with FPS for single-phase operation.
Lightweight, high-performance armature: a 4.94 lb (2.24 kg) moving element delivers up to 100 gn sine acceleration.
Robust, lightweight suspension: provides torsional and transverse stiffness with minimal impact on system acceleration.
Vertical and horizontal operation: trunnion-mounted for either test axis.
Armature interface: 6.14 in (156 mm) armature with one center insert and eight equispaced inserts on a 4.9 in (125 mm) pitch circle, in 5/16 UNF or M8.
Why engineers pick it
Choose force or simplicity. The HPAK raises sine force from 364 lbf (1.62 kN) to 495 lbf (2.2 kN) and supplies the shaker, field coils, and cooling fan from one unit. The LPA1000 + FPS runs from single-phase 100, 120, or 230 V.
Double the payload of the V555. 110 lb (50 kg) internal payload capacity in a trunnion-mounted package of 23.0 × 29.3 × 15.0 in (584 × 744 × 380 mm).
Efficient switching drive. The HPAK is a Class D switching amplifier with over 90% amplifier efficiency and 93% module efficiency.
Proven reliability. The family is built for maximum system availability.
The V650 system
With HPAK
LDS HPAK switching power amplifier: 5 kVA, three-phase input. It powers the shaker, field coils, and cooling fan.
Cooling fan: three-phase 380–440 V, 50 Hz, or 380–500 V, 60 Hz.
With LPA1000 + FPS
LDS LPA1000 linear power amplifier: 961 VA rated output into 4.0 Ω, single-phase input.
LDS FPS field power supply: field and degauss coil power and a switchable cooling fan output. It is required with the LPA1000.
Cooling fan: single-phase 230 V, 50 Hz, or single-phase 120 V / 230 V, 60 Hz.
The V650 can be driven by any suitable oscillator, amplifier, and field power supply combination. The LPA1000 + FPS and the HPAK are the combinations specifically recommended.
Configuring and scaling
Select the V650 on this page and use Request Quote to start your system. Contact W5 for items the selector doesn't cover: amplifier (HPAK or LPA1000 + FPS), armature insert thread (5/16 UNF or M8), 50 Hz or 60 Hz cooling fan, vibration controller, and fixturing.
For a smaller system, the LDS V555 delivers 211 lbf (0.94 kN) with a usable range from DC to 6,300 Hz. For more payload, the LDS V721 and V780 carry 220 lb (100 kg) internally.
Get the V650 specified, installed, and supported
W5 Engineering is the authorized North American distributor for LDS / Brüel & Kjær. We configure the V650 to your force, frequency, and payload targets — including the choice between the HPAK and the LPA1000 with FPS — then install it and support it. One PO covers the shaker, amplifier, cooling fan, and commissioning. Contact us with your test profile and we will return a configuration recommendation and quote.
