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Technical Information
This menu contains all the parameters that have a direct effect on driving of the
pump.
HIGH SPEED ADJ: Sets the rotational speed of the pump when the low-speed
function is not active, expressed either in Hz or KRPM.
LOW SPEED ADJ: Sets the rotational speed of the pump when the low-speed
function is active, expressed either in Hz or in KRPM.
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: it's possible to operate the external cooling fan selecting between
following options:
ALWAYS ON: the cooling fan is always ON
AUTOMATIC: The vent valve behavior is managed by the controller (see Drive
the External Fan chapter)
SERIAL COMMAND: the cooling fan is controlled directly via the serial port.
VENT VALVE MODE: it's possible to operate the optional vent valve selecting
between following mode of operation:
AUTO TIME: the valve is controlled by the controller
SERIAL COMMAND: the valve is controlled by the serial port.
AUTO PUMP SPEED: the valve is controlled by the 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 OPEN TIME: sets the time, expressed in seconds, for the vent vale to stay in
open condition. Enter 0 if the valve has to stay open 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 this setting.
WATER COOLING: indicates whether the pump is cooled with water or not. The
controller limits the power supplied to the pump according to this setting.
ACTIVE STOP: to enable set YES, to disable set NO.
STOP SPEED READING: enables (YES) or disables (NO) the reading function of the
pump rotational frequency during braking, after stop command.
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Agilent TwisTorr Medium-TMP Rack Controller User Manual
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