Agilent Technologies TwisTorr 304 FS AG Notice De Mode D'emploi page 266

17 Technical Information
Programming
This menu contains all the parameters that have a direct effect
on driving of the pump.
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HIGH SPEED: Sets (in Hz) the speed of rotation of the pump
when the low-speed function is not active.
LOW SPEED: Sets (in Hz) the speed of rotation of the pump
when the low-speed function is active.
SOFT START: enables (YES) or disables (NO) the soft start
function. This parameter is visible only if the controller is
configured in FRONT mode.
EXTERNAL FAN CNF: Makes it possible to select driving
mode of the external cooling fan. Possible options:
ALWAYS ON: the cooling fan is always ON
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OFF_LIMPOWER: 10 seconds after the pump has
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reached NORMAL status, the fan is switched off and the
driving power of the pump is reduced to 50 W
SERIAL: the cooling fan is controlled directly via the
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serial port.
VENT VALVE MODE: makes it possible to select driving of
the vent valve
AUTO TIME: the valve is controlled by the controller
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MANUAL: the valve is controlled by the serial port.
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AUTO PUMP SPEED: the valve is controlled by the
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controller its king into account the pump's deceleration.
VENT VALVE DELAY: Sets the delay, expressed in seconds,
between stopping of the pump and opening of the vent valve.
VENT VALVE OPEN TIME: sets the time, expressed in
seconds, of opening of the vent valve. Enter 0 if the valve is
to be kept open indefinitely (until the next start).
LOAD GAS TYPE: selects the type of gas used in the
process. Therefore, the controller limits the power supplied
to the pump according to the setting of this parameter.
TwisTorr 304 FS AG Rack Controller User Manual / 87-901-029-01 (E)