Agilent Technologies TV 301-P Manual De Instrucciones página 181

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SOFT START: this input is used to provide a "soft start" to the pump;
in this condition the ramp-up time could be up to 45 min.
SPEED SETTING: PWM input signal to set the pump speed. The
PWM signal characteristics must be the following:
frequency: 100 Hz +/-20 %
ampitude: 24 V max
duty cycle range: from 25 % to 75 %
corresponding to a pump speed from 187 Hz to 963 Hz (see the
following diagram).
Figure 6
PROGRAMMABLE ANALOG SIGNAL: this output signal is a voltage
(from 0 to 10 Vdc) proportional to a reference quantity (frequency or
power) set by the user. The default setting is the frequency (see the
following example diagram).
TV 301-P Navigator Controller User Manual / 87-901-001-01 (B)
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