Model: L series

Maker: Sentek - USA

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1 - 10 kN (220 - 2200 lbf)

The L-Series air-cooled electro-dynamic shakers are designed for the vibration testing of small electronic or mechanical components or other assemblies up to 200 kg (440 lb).

KEY APPLICATIONS

• Electronic parts and systems - qualification testing

• Computer equipment testing

• Automotive component testing

• Satellite component testing

• General stress screening

FEATURES

• Armatures diameters from 110 mm (4.3 in) to 240 mm (9.5 in) with metric or American pcd.

• Pneumatic load support

• Rugged trunnion design

• Standard body isolation and guidance system designed to eliminate the use of a seismic base

• Useful vibration control frequency range from 5 to 5000 Hz

 

SPECIFICATION

System Performance	L0111A	L0211A	L0315M	L0620M	L1024M
Sine Force Peak kN(lbf)	0.96 (220)	1.96 (440)	2.94 (660)	5.88 (1321)	9.80 (2203)
Random Force rms kN(lbf)	0.96 (220)	1.96 (440)	2.94 (660)	5.88 (1321)	9.80 (2203)
Shock Force (6 rms) kN(lbf)	1.96 (440)	3.92 (881)	5.88 (1321)	11.76 (2643)	19.60 (4406)
Frequency Range (Hz)	5 - 4500	5 - 4500	5 - 4500	5 - 5000	5 - 3400
Continuous Displacement mm (in)	25 (1.0)	25 (1.0)	40 (1.5)	51 (2.0)	51 (2.0)
Shock Displacement mm (in)	25 (1.0)	25 (1.0)	40 (1.5)	51 (2.0)	51 (2.0)
Max Velocity m/s (in/s)	2.0 (78.7)	2.0 (78.7)	2.0 (78.7)	2.0 (78.7)	2.0 (78.7)
Max Acceleration Sine Peak m/s2 (g)	490 (50)	980 (100)	980 (100)	980 (100)	980 (100)
Armature Diameter mm (in)	110 (4.3)	110 (4.3)	150 (5.9)	200 (7.9)	240 (9.5)
Effective Armature Mass kg (lb)	2 (4.4)	2 (4.4)	3 (6.6)	6 (13.2)	10 (22.0)
Max Static Load kg (lb)	70 (154)	70 (154)	120 (264)	200 (440)	200 (440)

Common testing standards: MIL-STD-810, MIL-STD 167, ASTM D999-01, ASTM D3580 – 95 (2010), ASTM D4728 – 06, ISO 2247:2000, ISO 8318:2000, ISO 9022-10:1998, ISO 9022-15:1998, ISO 9022-19:1994, IEC 60068-2-64, EIA-RS-186, JIS C 0040:1999 , MIL-STD-202, MIL-STD-750, NAVMAT P-9492, RTCA DO-160 Section 8

POWER AMPLIFIERS

Sentek Dynamics’ PA Series air-cooled, digital switching power amplifiers utilize an intelligent logic control system that assures maximum performance, safety, and reliability.  Standard amplifier outputs range from 1 to 480 kVA.  Interlocks to prevent shaker damage or operator injury include: Over-voltage, Over-current, Amplifier Over-temperature, Shaker Over-temperature, Over-travel, Phase Failure, and Power-module Fault.  The amplifier provides drive power to the shaker, field coils, blower unit and other ancillary components.

  

• High conversion efficiency > 91 percent

• Low harmonic distortion < 0.5% at typical testing frequencies

• Designed for continuous use over extended periods of operation

• LCD display for status and diagnostic messages

• Space saving low-profile cabinet for amplifiers with outputs from 1 to 6 kVA

• Selectable BNC connection on front panel and rear cabinet for drive input

• Meets or exceeds international requirements for safety and EMC

• Emergency stop (E-stop) on front panel

• Optional remote control panel (RCP) that duplicates functionality of amplifier front panel

VIBRATION CONTROLLER SYSTEM

Unlike traditional vibration test controllers that rely heavily on an external computer for real-time operation, the Spider-81 is the first vibration controller that directly integrates time-synchronized Ethernet connectivity with embedded DSP technology. This strategy greatly increases the control performance, system reliability and failure protection of the vibration test controller. It also allows a large number of channels to be configured without sacrificing system performance.

Front side

Back side

Spider-81 vibration test controllers have voltage, charge, TEDS, and IEPE inputs which are ideal for shock, vibration and acoustic measurement or general purpose voltage measurement. The internal flash memory stores test configuration data for controlling up to 64 channels simultaneously in addition to storing real-time analysis data. Multiple output channels provide various signal output waveforms that are synchronized with the input sampling rate. A bright LCD screen displays testing status information. Ten monitoring connections on each unit are used to read signals of analog inputs and outputs. Built-in isolated digital I/O and RS-485 serial ports enable interfacing with other hardware.

• Random Vibration Control

• Swept Sine Vibration Control

• Classical Shock Control

• Transient Time History (TTH)

• Time Waveform Replication

• EDM App for iPad

• More Vibration Control Software Option

SLIP TABLE

With today’s demanding test requirements there is an increasing need for slip tables to facilitate testing in a horizontal position.  Sentek Dynamics offers mono-base and stand-alone slip tables in low and high-pressure designs in standard sizes ranging from 300 mm (12 inches) to 2500 mm (98 inches).  Custom sizes are also available including expandable slip tables when a larger mounting area is occasionally required.

 

In a mono-base configuration the shaker and slip table share a structural steel body that enables rapid conversion between vertical and horizontal positions, and the accurate alignment of the shaker relative to the slip table when rotated to the horizontal position. 

In a stand-alone configuration an independent steel platform supported by leveling feet allows any vertical shaker from Sentek Dynamics or other manufacturer to couple with the slip table assembly.

 

HEAD EXPANDER

Sentek Dynamics can provide a wide-range of standard head expanders and custom fixtures for applications requiring a larger mounting area, vertical mounting or simultaneous testing of multiple devices under test (DUTs) in sizes up to 1500 mm (60 inches).  FEA is used to ensure an optimal design and superior performance.  Standard material is Magnesium with Aluminum an affordable option. 

 

• Lates (square or round) for low-frequency (less than 350 Hz) testing where a large mounting area is needed at an economical cost. (Note: Recommended for DUTs with a low center of gravity)

• Head expanders (square or round) for working frequencies ranging from 350 to 2000 Hz.

• Various insert patterns are available

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