Edwards nEXT nEXT85 - Page 11

List of Figures
Figure 1: Dimensions - nEXT85 ISO63. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 2: Dimensions - nEXT85 CF63. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 3: Dimensions - nEXT85 ISO100. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 4: Dimensions - nEXT85 DN40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 5: Typical base view. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 6: Maximum allowed rate of pressure rise during venng: pressure against me
(with pump inially at full rotaonal speed). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 7: Maximum relave humidity to avoid condensaon with water cooling. . . . . . . 22
Figure 8: Interface circuits for nEXT turbo pump controllers. . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 9: Valve connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 10: nEXT85 pumping speed versus inlet pressure performance graph. . . . . . . . . . . 31
Figure 11: nEXT85 compression rao versus backing pressure graph. . . . . . . . . . . . . . . . . 31
Figure 12: Typical pumping system with a nEXT pump. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Figure 13: Allowable pump orientaon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Figure 14: Logic interface connecons - parallel control. . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Figure 15: Motor controller status informaon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Figure 16: Logic interface connecons - RS232 serial control. . . . . . . . . . . . . . . . . . . . . . . . 46
Figure 17: Logic interface connecons - RS485 serial control. . . . . . . . . . . . . . . . . . . . . . . . 47
Figure 18: Conceptual diagram for mul-drop connecon using RS232 interface. . . . . . . 53
Figure 19: RS485 mul-drop connecon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Figure 20: Logic interface connecon - mixed parallel and serial operaon. . . . . . . . . . . . 55
Figure 21: Auxiliary interface connecon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Figure 22: Serial and parallel control owchart. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Figure 23: Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
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