Agilent Technologies TwisTorr 304 FS AG Notice De Mode D'emploi page 272

17 Technical Information
Programming
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R1 (R2) TYPE: selects the type of reference measurement to
drive the relay. Possible types:
Frequency: driving frequency of the pump
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Power: power supplied to the pump
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Time: time from start
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Normal: achievement of normal condition
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Pressure: pressure read by the gauge, if present
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R1 (R2) SET VALUE: Sets the reference value at which the
relay R1 (R2) is activated. This parameter has no effect if
NORMAL (previous parameter) is selected as SETPOINT
TYPE.
R1 (R2) HISTERESYS: Sets, in percentage, the hysteresis of
the relay
R1 (R2) MASK TIME: sets the masked time (in hh:mm:ss),
measured from start, within which the SETPOINT R1 (R2) is
not driven even if the threshold value has been reached. This
parameter is not available if SETPOINT TYPE is set to
NORMAL
R1 (R2) OUTPUT LOGIC: Selects the control logic of the
SETPOINT output.
positive logic (the relay is energized when the
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measurement exceeds the reference)
negative logic (the relay is energized when the
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measurement is below the reference)
TwisTorr 304 FS AG Rack Controller User Manual / 87-901-029-01 (E)