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Operating the Pump
After the starting period, if the system has a vacuum leak
or the pressure in the pump chamber is high (from 1 mbar
to atmosphere), the pump continues to operate indefinitely.
If the gas load at the turbopump inlet flange continues to
stay high, the power drawn by the turbopump increases up
to the maximum value.
Then the Turbo-V ICE pump is slowed down in pro- portion
to the gas load at least until it reaches 3 KRPM.
As soon as the gas load decreases, the pump will
automatically accelerate to reach normal operation. The
pump can be stopped at any rotational speed and can be
restarted at any rotational speed from either the front panel
buttons or the remote connections. The controller
automatically synchronizes the output to the rotational
speed of the pump and then accelerates linearly up to the
nominal speed or within steps if the Soft Start has been
selected. The display shows:
P U M P
I
S
1 2
X X
K R P M
until normal operation achieved.
Remote Control Mode Operation
If remote signals are used to operate the controller, it must
be programmed for remote operation (see paragraph "
Operating parameter selections " and when ready to
start, the display shows:
R E A D Y
F O R
S O F T
S T A R T
ACCESSORIES AND SPARE PARTS
P1 input mating connector
P2 mating connector
P7 mating plug
Pump-controller connection cable
Mains cable (European plug, 3 m long)
Mains cable (American plug, 120 V, 3 m long)
OPTIONS
RS 485 computer communication kit
RS 232 computer communication kit
RS 422 computer communication kit
Flow Meter with swagelok fitting
Flow Meter with flange fitting
Heater Jacket (for 220 V Controller)
Heater Jacket (for 120 V Controller)
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S T A R T
I
N G
H J
H S
R E M O T E
H S
Description
Description
If the Soft Start has been deselected the display shows:
P U M P
R E A D Y
R E M O T E
With or without Soft Start mode selected the START/STOP
and LOW SPEED front panel push- buttons are
inoperative, while the CYCLE NUMBER and PUMP
CURRENT pushbuttons are always active.
RS 232/422/485 Control Mode Operation
If the RS 232 option is installed and the controller has been
programmed for RS 232 operation, the controller may be
driven by a computer and when ready to operate, the
display shows:
P U M P
R E A D Y
R S 2 3 2
If the Soft Start has been deselected the display shows:
R E A D Y
S O F T
S T A R T
The value which corresponds to the board installed will be
assigned to RSXXX
With
or
without
Soft
START/STOP,
LOW
computer control, while the CYCLE NUMBER and PUMP
CURRENT front panel pushbuttons are always active.
969-9890
969-9891
969-9854
969-9954
969-9956
969-9955
969-9856
969-9857
969-9858
969-9114
969-9115
969-9820
969-9821
88
TECHNICAL INFORMATION
:
U S E
S T A R T
:
U S E
L
I
N E
F O R
R S 2 3 2
Start
mode
selected
SPEED
functions
are
Part number
Part number
87-900-929-01 (H)
H S
H S
H S
the
under
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