The DSW 760 Series of Shakers are matched with the DSA 280K and DSA 320K Series of Power Amplifiers. Its armature supply is assembled in four 19-inch network racks of 36 unit height and field supply is assembled in two 19-inch network racks of 36 unit height. The water cooling system is assembled in two 19-inch network racks of 36 unit height. All three system communicate with each other over a galvanically isolated RS 485 interface.
Standard Features
- Complies with Machinery Directives, Low Voltage Directive and Electromagnetic Compatibility Directive under CE
- Aluminium or Magnesium alloy armature structure
- Hydrostatic central guidance bearing
- Trunnion mounted shaker for operation in vertical and horizontal position
- Pneumatic and DC based auto-centring of armature head
- Body isolation using air bellows to isolate vibrations from the shaker
- Air isolation mounts between system base and ground
- Lowering of gauss level at the armature head
- Hermetically sealed construction
Optional Features
- Up to 76 mm (3.0 in) with Long Stroke
- PC based Power Amplifier Remote
- Auto Resume from power failure
- Auto Stop after user profile completion
- Attachment to Horizontal Slip Table and Head Expander
- Integration with Environmental Chamber
Technical Specifications
| SEW 760 Series Shaker, DSA Series Amplifier | DSW 760 – DSA 280K | DSW 760 – DSA 320K |
| System Performance | ||
| Armature Diameter | 760 mm | 760 mm |
| Sine Force (peak) | 28000 kgf (61600 lbf, 280 kN) | 32000 kgf (70500 lbf, 320 kN) |
| Random Force (rms) | 28000 kgf (61600 lbf, 280 kN) | 32000 kgf (70500 lbf, 320 kN) |
| Shock Force (rms) | 56000 kgf (123200 lbf, 560 kN) | 64000 kgf (141000 lbf, 640 kN) |
| Acceleration (sine) | 100 g | 100 g |
| Velocity (sine peak) | 2.0 m/s | 2.0 m/s |
| Velocity (shock peak)* | 3.7 m/s | 3.7 m/s |
| Displacement (pk-pk)** | 51 mm (2 in) / 76 mm (3 in) | 51 mm (2 in) / 76 mm (3 in) |
| Axial Resonance (±5%) | 1300 Hz | 1300 Hz |
| Useful Frequency Range | 5 to 1700 Hz | 5 to 1700 Hz |
| Protection Interlocks | Mains Input Over & Under Voltage, Over Current, Loss of Input Phase, Over Temperature Amplifier & Shaker, Field Fail, Cooling, User Safety Interlock if specifically required by the customer | |
| Shaker Characteristics | ||
| Moving Element Mass | 260 kg | 280 kg |
| Internal Load Capability | 3000 kg | 3000 kg |
| Suspension Axial Stiffness | 15 kg/mm | 15 kg/mm |
| Suspension Cross-Axial Stiffness | 3800 kg/mm | 3800 kg/mm |
| Stray Magnetic Field*** | < 1 mT (10 gauss) | < 1 mT (10 gauss) |
| Compressed Air**** | 7 bar (100 psi) | 7 bar (100 psi) |
| Cooling | A dedicated cooling system for storing, circulating and cooling distilled water used for cooling | |
| Amplifier Characteristics | ||
| Power Output | 280 kVA | 320 kVA |
| Total Harmonic Distortion***** | Typically 0.5% | Typically 0.5% |
| Input Impedance | > 10 kΩ | > 10 kΩ |
| Input Sensitivity | 4 Vrms, Compatible with all standard controllers | 4 Vrms, Compatible with all standard controllers |
| Signal-to-Noise Ratio | > 75 dB | > 75 dB |
| Power Efficiency***** | > 92% | > 92% |
| Armature Insert Pattern | SEW 760 Shaker | ||||
| Pattern | PCD | PCD | PCD | PCD | PCD |
| Position of Insert | Centre | 200 mm | 400 mm | 550 mm | 700 mm |
| No. of Inserts (Total – 33) | 1 | 8 | 8 | 8 | 8 |
| Safety Norms | |
| CE | Complies with Machinery Directive (2006/42/EC), Low Voltage Directive (2014/35/EU), and Electromagnetic Compatibility Directive (2014/30/EU) |
