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Technical Information
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:
frequency: 100 Hz +/-20 %
amplitude: from 5 to 24 V
duty cycle range: from 25 % to 75 % (toff/T) corresponding to a rotational
frequency from 680 Hz to FMAX Hz linearly. With duty cycle <25 % rotational
frequency = 680 Hz, with duty cycle >75 % rotational frequency = 825 Hz for
X3501-64016 or 714 Hz for X3501-64006.
NOTE
The duty cycle percentage is referred to the low level portion of the PWM signal.
High Speed is the nominal rotational frequency of the pump (825 or 725 Hz). Low
NOTE
Speed (680 Hz) corresponds to the rotational frequency for a stand by status.
Users can set rotational frequency between these two values.
Figure 34
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Agilent TwisTorr Medium-TMP Rack Controller User Manual
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