Edwards nEXT400 User Manual

▪ Oxygen - when the pump is purged by an inert gas, oxygen can be pumped at a
concen
traon above 20% by volume. Refer to Purge gas specicaon on page 28
for purge gas specicaon. If the pump is not purged, the oxygen concentraon
must be less than 20% by volume.
▪ Water vapour - Make sure that the vapour does not condense in the pump. Refer
to Water cooling on page 61.
3.8 Materials exposed to gases pumped
The materials and component types that are exposed to the gases pumped are:
▪ Aluminium alloys
▪ Stainless steels
▪ Fluoroelastomer and nitrile O‑rings
▪ Hydrocarbon lubricant
▪ Rare earth magnets
▪ Silicon nitride
▪ Carbon bre reinforced epoxy resin
▪ Fire retardant polypropylene
▪ Polyamide
▪ PVC
▪ Titanium
▪ Silicon
▪ Torlon
▪ Ceramic
3.9 Logic int
erface connector
The pump has 15‑way logic interface connector at the end of the logic interface cable.
You can plug the logic interface connector into the manufacturer's TIC Turbo
Instrument Controller or TIC Turbo Controller. Use applicable connector mang half (not
supplied) to connect the pump to the customer equipment. Refer to Table: Logic
interface technical data for the connector mang half type, Table: Logic interface
connector pins for the logic interface connector pins for the electrical connecons and
Figure: Interface circuits for nEXT turbo pump controllers for the circuit diagrams of the
connector interface.
Table 10
Logic interface technical data
Logic interface item
Connector* 15‑way D‑type male
nEXT pumps electrical supply:
Permied voltage range
(with ripple)
24 ‑ 48 V d.c. +5%, -10%
(21.6 to 50.4 V d.c.)
Maximum voltage ripple 0.5 V r.m.s.
04/2022 - ©Edwards Limited
Page 31B80000880_G
B80000880_G - Technical data

Edwards nEXT400 Specifications

General

Brand	Edwards
Model	nEXT400
Category	Water Pump
Language	English