Agilent Technologies Turbo-V 2300 TwisTorr Notice De Mode D'emploi page 219

The contact logic is configured depending on Activation Type
parameter status. If Activation Type is "high level active" the contact
is configured as "normally open" (it will close the circuit when
activated), if Activation Type is "low level active" the contact is
configured as or "normally closed" (it will open the circuit when
activated).
Then the default factory setting for this contact output is normally
open.
SPEED SETTING: PWM input signal (opt isolated) to set the pump
speed. The PWM signal characteristics must be the following:



The duty cycle percentage is referred to the low level portion of the PWM
NOTE
signal
High Speed is the nominal rotational frequency of the pump (555 Hz). Low
NOTE
Speed (510 Hz) corresponds to the rotational frequency for a stand by status.
Users can set rotational frequency between these two values.
Turbo-V 2300 TwisTorr Rack Controller User Manual / 87-901-044-01
frequency: 100 Hz +/-20 %
amplitude: from 5 to 24 V
duty cycle range: from 25 % to 75 % (t
rotational frequency from 510 Hz to 555 Hz linearly. With duty
cycle <25 % rotational frequency = 510 Hz, with duty cycle >75 %
rotational frequency = 555 Hz
Connection J1 Remote I/O Interconnections
/T) corresponding to a
off
Technical Information
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