Overspeed; Rotor Energy System; Drive; Name Rating Plate - Beckman Coulter Optima L Series Instructions For Use Manual

Description

Overspeed

If the temperature system malfunctions, the
decelerate to a stop.
Overspeed
The overspeed system is a safety feature designed to ensure that the rotor does not exceed its
maximum allowable speed. This system includes photoelectric sensors in the rotor chamber next to
the drive spindle (see
manuals provide information on the correct overspeed disks to be used with each rotor.
The overspeed disk has alternating light and dark sectors. As the rotor spins, the passage of
reflecting and nonreflecting sectors over the photoelectric device generates a series of pulses that
are detected by electronic circuitry. If the pulse rate, which is dependent on the number of sectors
on the disk and the speed of the rotor, exceeds a set limit, the
and the rotor will automatically coast to a stop.
When the rotor reaches 1000 rpm, the set speed is checked against the overspeed disk. If the
overspeed disk indicates a maximum allowable speed that is lower than the set speed, the set speed
is automatically lowered to the maximum speed permitted by the disk and a
message is displayed to alert you to the change. (In the ω
to give an equivalent ω

Rotor Energy System

As the rotor accelerates between 15,000 and 21,000 rpm, rotor inertia is measured and the rotor
energy is calculated for the speed set by the user. If the calculated rotor energy is determined to be
excessive, a

Drive

The Optima L series ultracentrifuges use a frequency-controlled, air-cooled direct-drive induction
motor that requires no gears or brushes. In addition, the drive does not require an oil vacuum seal,
external oil reservoir, or continuously operating damper. Externally cooled by forced air and
internally cooled by oil, the drive delivers ultrasmooth, quiet performance, with high tolerance of
rotor imbalance.

Name Rating Plate

A name rating plate is affixed to the rear of the instrument. Always mention the serial number
(located on the chamber door) and model number when contacting Beckman Coulter regarding
your Optima L series instrument.
1-6
Figure 1.2) and an overspeed disk on the bottom of the rotor. Individual rotor
2
t value.)
diagnostic message will appear and the instrument will immediately shut down.
SPEED
diagnostic message will appear and the rotor will
TEMP
diagnostic message will light
SPEED
2
t mode, the time setting is recalculated
diagnostic
SPEED
PN LL-IM-12AB