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17
Technical Information
Interconnections

Signal Description

START/STOP: input signal to start or stop the pump. With the
supplied cover connector the START/STOP (+) signal is connected to
the +24 Vdc pin and the START/STOP (-) signal to the GROUND pin:
in this condition the pump automati-cally starts as soon as the
controller recognises the input supply ("Plug & Pump").
INTERLOCK: input signal to control the pump rotation. With the
supplied cover connector the INTERLOCK (+) signal is connected to
the +24 Vdc pin and the INTERLOCK (-)signal to the GROUND pin.
Speed setting: PWM input signal to set the pump speed. The PWM
signal characteristics must be the following:
Figure 14
252/300
frequency: 100 Hz +/-20 %
amplitude: 24 V max
duty cycle range: from 25 % to 75 %
corresponding to an output frequency from 187 Hz to 963 Hz (see
the following diagram):
TV 301SF Navigator User Manual / 87-900-957-01 (H)

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