Pump Shutdown; Power Failure; Remote Control Mode Operation - Varian Turbo-V 70 PCB Mode D'emploi

Pump Shutdown

Press the front panel STOP pushbutton or remove the
remote signal; the power from the turbopump will be
removed and the pump will begin to slow down.
An emergency stop signal is provided via a remote
contact. This signal is active in any of the three
operation selections: FRONT, REMOTE, RS 232; when
activated, the display will be as shown in the following
figure.
S Y S T E M
O V E R R

Power Failure

In the event of a power failure (momentary or long
term), the Turbo-V controller will stop the turbopump
and all the interconnected pumps/devices. The Turbo-V
vent valve device, 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 controller
automatically restarts the interconnected devices and
the turbopump in the proper sequence.
The display shows:
P U M P I S
1 2 X X
until normal operation achieved.
I D E
S T A R T I N G
K R P M

Remote Control Mode Operation

If remote signals are used to operate the controller, it
must be programmed for remote operation (see
paragraph "FRONT/REMOTE/232
when ready to start, the display shows as in the
following figure.
R E A D Y
S O F T S T A R T
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 wihout
START/STOP and LOW SPEED pushbuttons are
inoperative, while the CYCLE NUMBER and PUMP
CURRENT pushbuttons are always active.
62
TECHNICAL INFORMATION
Selection")
F O R R E M O T E
: U S E
S T A R T
Soft Start mode selected
87-900-871-01 (B)
and
the