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•
If the Soft Start mode has been deselected the display
will change and shows:
P U M P
I
S
1 2
X X X
where:
1 2 = contrast inverted identifies the set point condition:
•
1 is displayed when relay R1 is de-energized and
the related output is zero voltage.
•
2 is displayed when relay R2 is energized and the
related output is 24V.
XXX Hz = indicates the actual theoretical rotational speed
of the pump as a function of the controller output
frequency.
HJ =
displayed only when the heater jacket is
active.
HS/HL = indicates that the pump is
working in the High speed or
Low speed mode.
After START command, frequency
maximum level, then the
value proportional to the pump rotational speed (about 3
Hz if the pump is completely stopped).
The pump will accelerate to its normal rotational speed.
•
During acceleration of the pump or during any
operating condition, it is always possible to select the
other parameters to be displayed pressing the PUMP
CURRENT or the CYCLE NUMBER pushbuttons.
•
After the run up time and when the normal rotational
speed is reached, the display will be as follows, even
if any previous display selection was made, and the
normal condition has been reached.
N O R M A L
1 2
X X X
where: XXX = indicates the rotational speed (36 Hz for
high speed, or 22 Hz for low speed).
S T A R T
I
N G
H z
H J
H S
output will be at the
frequency will decrease to a
O P E R A T
I O N
H z
H J
H S
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 3KT pump is slowed down in pro-
portion to the gas load at least until it reaches about 4 or 3
Hz.
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.
Pump Shutdown
Press the front panel STOP push-button or remove the
remote signal; the power from the turbopump will be
removed and the pump will begin to slow down.
Power Failure
In the event of a power failure (momentary or long term),
the Turbo-V 3KT controller will stop the turbopump and all
the interconnected pumps/devices. The Turbo-V 3KT vent
valve dev3KT, if used, will vent the turbopump only if the
power failure is longer than the preset delay time. When
power is restored, the Turbo-V 3KT controller automatically
restarts the interconnected dev3KTs and the turbopump in
the proper sequence.
The display shows:
P U M P
1 2
X X X
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
S O F T
S T A R T
89
TECHNICAL INFORMATION
I
S
S T A R T
H z
H J
F O R
R E M O T E
87-900-988-01 (B)
I
N G
H S
H S
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