Turbopump Description; Controller Description - Agilent Technologies TPS-compact 969-8217 Notice De Mode D'emploi

Turbopump Description

The turbopump consists of a high frequency motor driving a turbine
fitted with many bladed stages and Macrotorr stages. The turbine
rotates in an anticlockwise direction when viewed from the high
vacuum flange end.
The turbine is made of high-strength, light aluminium alloy, and is
machined from a single block of aluminium. The turbine blades have
five different angles, from 44° to 12°, while the Macrotorr stages are
in the form of discs.
The turbine rotor is supported by permanently lubricated high
precision ceramic ball bearings installed on the forevacuum side of
the pump. The static blades of the stator are fabricated in stainless
steel. These are supported and accurately positioned by spacer rings.
The Macrotorr stators are in the form of self-positioning machined
discs with pumping channels and an opening restricted by the
corresponding rotor discs. These are fabricated in aluminium alloy.
During normal operation, the motor functions with a power feed at
54 Vac three-phase at 1330 Hz (TV81M) or 963 Hz (TV301). To reduce
losses during start-up to a minimum, the frequency increases
according to a ramp with a higher initial voltage/frequency ratio.
A thermistor sensor is mounted near the upper bearing to prevent
the pump from overheating. The pump is balanced after assembly
with a residual vibration amplitude less than 0.01 µm.

Controller Description

The integrated controller is a solid-state frequency converter which is
driven by a single chip micro-computer and is composed of a PCB
which includes a power supply with a 3-phase AC output, analog and
input/output section, microprocessor and digital section. The
controller recognizes the mains presence and converts the single
phase AC mains supply into a 3-phase, medium frequency output
which is required to power the pump.
The controller can be operated by a remote host computer via the
serial connection.
TPS-compact User Manual / 87-901-010-01
Description of the TPS-Compact
(C)
Technical Information
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