Agilent Technologies TPS-compact 969-8217 Bedienungshandbuch Seite 228

17 Technical Information
Interconnections
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 20 min.
SPEED SETTING: PWM input signal to set the pump speed. The
PWM signal characteristics must be the following:




Figure 26
PROGRAMMABLE ANALOG SIGNAL: this output signal is a voltage
(from 0 to 10 Vdc) proportional to a reference quantity (frequency or
power or Temperature or Pressure) set by the user. The de-fault
setting is the frequency (see the following example diagram).
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frequency: 100 Hz +/-20 %
amplitude: 24 V max
duty cycle range: from 25 % to 75 %
corresponding to a pump speed from 1100Hz to 1350Hz (see the
following diagram).
1400
1350
1300
1250
1200
1150
1100
1050
20 30 40 50
Duty Cycle [%]
TPS-compact User Manual / 87-901-010-01
60 70 80
(C)