13.激振器需要什么类型的维护?

模态激振器相关问题

  • Normal wear and tear.What to do?
  • 正常磨损,怎么办?

The shaker is a sealed device requiring little or no regular maintenance if the operating instructions described in the user manual are followed. Normal wear and tear of the shaker can be addressed by cleaning the shaker body of debris. Pressurized shop air (through the bodys vent holes) can be used to blow any free particles from the internals that may scrape the armature. Before attempting further inspection or service, always disconnect the drive cable of the shaker from the power amplifier.

激振器是密封设备,如果遵守用户手册中所描述的操作指令,则很少需要维护,或者不需要定期维护。激振器的正常磨损可以通过清理激振器本体上的残渣来处理。可以用增压车间气源(通过本体上的通风孔)从内部吹掉可能会磨损动圈的任何自由尘粒。在试图进一步检查或者维修服务之前,总要从功放上断开激振器的驱动电缆。

  • Broken/cracked flexure. What to do?
  • 断裂/裂纹,怎么办?

Damage to the armatures flexure suspension due to either mechanical or electrical overdrive of the shaker may be handled by replacing the damaged flexure elements with new ones. The moving armature is suspended in the gap of the magnetic field circuit a set of radial flexures. Vertical foreshortening flexures provide axial support as well as lateral and rotational restraint of the armature assembly. Use a screwdriver to remove the screws that hold the shaker cover and inspect the armature suspension for damaged flexures. Watch out for damaged, fatigued or discolored flexures, typically near the mounting points. Damaged flexures must be replaced with new ones. Check that the armature is properly centered in the gap and moving without interference before replacing the shaker cover and attempting to use the shaker. If it appears that repairs are necessary, the shaker should be shipped to our facilities in Cincinnati, Ohio, USA. Please contact The Modal Shop for details and to request an RMA (Return Material Authorization) number.

由于激振器的机械或者电力过载所造成的动圈夹具悬挂装置损坏,可以通过用新的夹具元件更换损坏的来处理。运圈用一组径向夹具悬挂在磁场回路的气隙中。垂直方向缩短的夹具提供了径向支撑以及动圈组件的横向和旋转方向的约束。用改锥去掉固定激振器端盖的螺钉,检查损坏夹具的动圈悬挂装置。损坏夹具必须更换为新的。在重新放回激振器端盖并试图要使用激振器之前,检查动圈在气隙中正确居中,可以无摩擦地运动。如果看起来需要维修,激振器应该运回我们在辛辛那提,俄亥俄,美国的工厂。更多信息请联系ModalShop,并要求一个RMA(返修品作业与管理)号码。

  • Misaligned armature.What to do?
  • 动圈不对中

Repair of damage to the coil, exciter body or magnet core should not be attempted in the field in any circumstances. Regarding the health of the coil, the shaker should have a DC impedance around 1Ω (models 2025E and 2060E) and between 3Ω to 4Ω for model 2100E11. Check the shaker impedance with a multi-meter for a short or open circuit. If the measured impedance is much lower than expected, then some of the coil windings may be shorted and the performance of the shaker will lessen. If the measured impedance is infinite, then the coil windings are open. In both cases, the unit should be sent back to The Modal Shop for repair.

在任何情况下,都不应该在现场试图维修损坏的线圈、激振器本体或者磁芯。对于线圈的完好状态,激振器应该有大约1 Ω的直流阻抗(2025E和2060E型),对2100E11大约有3 Ω~4 Ω。用万用表检查激振器阻抗的短路和开路状态。如果测得的阻抗远低于预期的,则有些线圈绕组可能短路了,激振器的性能会下降。如果测得的阻抗是无穷大,则线圈绕组是开路的。在这两种情况下,激振器应该运回ModalShop进行维修。

  • Shorting of coils. What to do?
  • 线圈短路

All shakers have an in-line fuse to protect the coil in the event of an electrical overdrive of the shaker. The 2100E11 modal, for example, has an internal 10A fuse that can be inspected by removing the four screws that hold the shaker cover. Other shaker models from The Modal Shop have the fuse in-line with the cable inside a yellow capsule. Inspect the electrical wiring and replace the fuse with a new one if necessary (spare supplied in the shaker accessory kit). Do not attempt to replace the fuse with a higher current fuse as it will not protect the shaker in the case of another electrical overdrive.

在激振器电力过载时,所有的激振器都有一个内嵌的保险丝来保护线圈。2100E11模态激振器,例如,有一个内部10A的保险丝,可以通过去掉固定激振器罩子的四个螺钉来检查。Modal Shop公司的其他激振器型号有保险丝,跟电缆在一条线上,置入一个黄色密封仓内。检查电气布线,如有必要,用新的保险管进行更换(在激振器附件中,有多余的)。不要试图用大电流的保险管进行替换,因为在其他的电力过载的时候,不能保护激振器。